Grade1Math

2. Draw sficks for the given numbers. Then cross out to subtract. One has been done for vou. a. 1s lllllllllt p, 12 -6 tW.W -3 9 15 d. 13 -8 -7 f. 19 17 -3 -5 NtgtH$ ItaB, a_p!rtr!7 Materials required: A set of 10 flashcards with subtraction problems written on them, 20 red kidney beans, paper and pencil Method: The class is divided into groups of 4 children each. Each group is given the materials mentioned above. In each group, one child draws a flashcard and calls out the problem written on it (for example, 15 - 2). Another child collects fifteen red kidney beans and then removes two of the beans. The third child counts the remaining beans and calls out the answer, 15 - 2 = 13, while the fourth child records the answer. Repeat the activity with other flashca rds.

Subtraction Using the Number Strip l-'', Subtract: 17-3=? 0r23456789 r0 11, t2 13 L4 15 1617 L8 L9 20 Keep your pencil on 17 and move backwards 3 steps to reach 14. Thus, L7 -3 = 1,4 1. Use the number strip to subtract the following: a. b. 16-s =f-_-] , 16-/=l I d. tq-t =,-l e. 18-5=E f. 1s-11=f-_-] 0 IIEI n. IIE i. EE EreI 4 16 3 Did you notice? : , Howquickareyou? : ' 11_1 - 1n 20-2= I t4-4 l-6 - 4 = : If, _ f t2-3= 15-5= -6 = 10 20-5= 16-5=

| < Add or subtract to find out what the tree wants to say by -- ' decodingthe secret message. 14+3=@ 7 +8= = 12-9 =5+0 16-5= =15-5 9+4= =11 -3 1-1 + 1= =13+6 =17-7 =20-2 0 1.6 t1. T4 3 LL 5 9 8 8 3 18 L0 IT 19 3 18 ttT7 12 8 11. 13 b 5 5 8 9 5 18 15 18 9 9 18 5

Story Sums-Add or Subtract nitr Read the stories. Put '+' or'-' in the boxes as needed, and then add or subtract. One has been done for you' There are 17 girls on a slide. Ereljointhem'3 more t7 How manY girls are there on the slide? tlJ l--)------:n---lr lL-l IIEI There are 19 children on 19 the jungle gYm. 2 come 1l . out of it. How manY children are remaining on the jungle gYm? There are 1-4 swings in a park. mEl 3 swings are broken. T4 How manY swings are in Lrr---__] working condition? There are 10 children standing in a queue. 5 more join fiilre! 10 them. How manY children are there r_J___=:r in the queue now?

[pE Three children had 20 mushrooms each. Thev ate a few mushrooms. The mushrooms left with each child are snown below. Write the subtraction fact for each set. One has oeen done for you. child 1 child 2 child 3 t-d-tr=@ tl-i_l=[i l_]- [_i=[__i MY Project l{tinf, l'Pmocaaoraceclnkopiryeua,ertrs,teelieyee6ohdbuosPoumaltxdhcuekseceeortteinsnplmatloahiunfceesroeldbcndoheeukaisbinrdeltenbeeedetahy.lcorehbnwenPeaulvaomnecsbksreyheTrothsowTuefhbh.feesoirenewseqstdutsaenrtl makingyour Packet e Label vour packet'e neally and wrile lhe corr ect doubles fact on Packete from 3 t'o E ' 1 3 4 5 o 8 10 11 L4 15 Packet 7 Packet 2 Packell 3 Packet 4 Packet 6

te T he correct option. If 'PRIYA' is reloted to b.8 '29781'and 'KIRTI'is t5 c d.9 reloted to '37947' . Then decodeP+R-I 14+3= b. 16 c. T4 d. 1L b. 12 o. L2 a. 18 - r 1? h 1a 8+4= a. 10 - : 4. 5+- = r.t :a -.i. iLEJ + 4=!3 c.9 d. 10 a. 0 b.3 i 6. t6--=L4 : a.0 b. 1 c.3 d.2 Add or subtract the following using the number strip. o L 2 3 4 s 6 7 8 9 LOLLL2L3L4L'L6]-7 L81920 h 1R - ? = d. t4+4= Add after writing Your own Problem. - EE There are candies in the basket. oo Rima adds more in it. -How many candies are there now? -There are --€ilt oo- candies in the basket'

a 15 -2 t) -i WonrsxeEr l Colour according to the colour code. L0-3 6+4 3+1 o o 9+4 o o 0- Blue 7- 4- 10- Red -LJ _ Fin l< Brown 9- Purple Green Black Orange lt_r_['| HIITTTTI IgBI TgTEEgAIBE cF-,

utB to 50 Ten ones make one ten. On a 'Froggy Picnic Day', some frogs got into the picnic bus at each halt' out how many frogs went for picnic' rollow the halts and find the ,.n'€$*$*$c 10 ones or 1 ten + Tota I Halt 2 lten+1one -ll + -{--litotal Hart3 ** l-ten+3ones -tti \\--___,__r I + Tota I ir.,ro *** lten+6ones -l.l + Tota I irr,,, **** 2 tens

Numbers from 2t to 30 L. Count the number of grapes in each row and fill in the boxes. One has been done for vou. n n E ETa. o -.w=,Tiw're'n,ty-one l2 1l n n E Eqb. oa = Twenty-two m mc. 3 E Eq= Twenty-three oo m m t:] EEaooo = Twenty-four m m E ETooooo = Twenty-five m m D tEl Toooooo = Twenty-six m m D Eqsis tl=o Twenty-seven EE=h. Twenty-eight s m i'ls [] EE=t. Twenty-nine sm mm i!3 EE ETi\"ll'. =t. ThirtV Ft .---##.

t. Fill in the missing nurilbers' 2. Read the number on eacn abacus and fill in the boxes' one has been done for You. fo lr- 51 3. Fill in the blanks. a. 25= tens and ones b. 1A - tens and ones one -26= tens and ones -tens and ones - -zt- tens and ones 28= tens and -- q p@4. Match each number kev to its number name lock' @

Numbers from 31 to 40 L Count the number of pencils and fill in the boxes. One has been 'yyy l= [rtdone for you. Thirty-one tE3EltI -ea\" 'UU ll=U EqTh irty-two r--_-l tEl T v lil=U Thirty-three Etl E v llll=U Thirty-four v v Eqllill = Thirty-five tl v EElU llllll= Th irty-six v U :ilfiltf Thirty-seven Etl T U v llllilll = Thirty-eight Etl rcT v v illlillll = Thirty-nine Eq v v illlillllf = Forty tEl q Fr #8_

1. Fill in the missing numbers. Fill in the blanks. b. 35=-tensand_ones 34=-tensand_ones a. 40=-tensand_ones 33=-tensand_ones 3 tens and 2 ones = 3 tens and 6 ones = 3 tens and 7 ones = 3 tens and 8 ones = 3. Write the number names. a. 35 b. 34 c. 31 d. 39 e.32 f. 40 4. In each oval box, ring the number for the given number name. l$ rhirty-eight {e 23 Thlrty-one l,Q tQ, thirty+our ){ 26 rwenty-six 20 /]$ Twenty-seven f

Numbers from 41 to 50 :: ,.. Write the numbers and their number names from 41 to 50. One has been done for you. MET rlril ffiE ffiEt ffiE 47 @ Forty-one ffiEt mEt nret HE ffiEt 46 [] [] 1.. Complete the number grid with the number names and colour the boxes as directed. Across I 1. 21- blue 5 6 3. 38 - yrli,:,r: 3 5. 50 - purple Down 1. 37 - pin k 2. 48 - red 4. 13 - brown ). 45 - ora nge 6.6-green

2. Circle the correct numbei and write its number name One has been done for You. a. 4tens+0ones 40 35 b. 3tens+8ones 48 c. 2tens+7ones 3. Fill in the missing numbers in the blank boxes' Before I Between | ffter 35 1) +5 w, L5 Join the dots and colour the picture. Guess and write the title of the picture in the given box. o\\\\J\\, 5 b rW_ ilvY Nv}/lz= {tve -s\\ i^

Comparing Numbers Using (r )r ohd = Observe the number strip and compare the numbers 5 and g. o t 2 3 4 0 6 7 @ e 1011 l2r3L4tsL6t7L8Lszo We see that 8 is larger or greater than 5. Or 5 is smaller than 8. We also say 5 is less than g. There are two ways to show this comparison. '>' is the greater than sign. '<' is the less than sign. Thus, 5<8 8>5 5 is less than g. 5.8 is greater than We use the symbol '='to show that two numbers are equal or same. 5 is equal to 5. 1,. Compare 24 and 8. 2. Compare 25 and 15. One-digit number is always smaller than a two-digit number. Therefore, 24 > 8. When both the numbers are two-digit numbers, compare the digits at tens place first. 2 tens a re greater tha n 1ten. Therefore, 25 > 15.

3. Comoare 23 and 27. lf both the numbers have the same digit in the tens place, then compare the ones place. 3 ones are less than 7 ones. Therefore, 23 < 27 . in the circles using >, <, or = sOz o'r+Og ' ++Ott d' tzOtq \"'ttO tt r zqOzt t' gsOzg h' ggOgg Rewrite the numbers in increasing order. 12 159 25 L8 32 L4 48 1,6 3. Rewrite the numbers in decreasine order. Lr 34 27 L6 32 3L 36 43 28

4. Help the bunny reach the carrot by colouring the path with numbers less than 26 in orange and colouring the path with numbers greater than 34 in green. t. I am the number that comes after 36. I am 2. I am the number that comes in-between 24 and26. I am 3. -.We are four friends. We come in-between 42 and 47. We are _ano_. MY Prole cr8 30 36 574 creale a charl, ae ehown ner e' with at least 4 s ete o+ numbers oraw a different bird with bird's face f acing lhe gr ealer numoer for each s,et of numbers to show arealer and smaller number'

Jenny wrote the numbers from L to 50 in a grid. Her brother erased some numbers and cut up the grid into pieces. Help her to fill in the boxes. L7 27 38 DIAJUHS,IIAB. A-UTry Objective: Forming two-digit numbers Materials required: Number cards for the numbers O to j-0, 20, 30 and 40, paper and pencil o ll n Ua IIsYq Method: Children pick a one-digit and a two-digit card each, and make a two-digit number by adding them. They call out the number name and record it on a paper. :FOfming NUmbefS'..::: :ttii;!!J!:!ijJ!:. i Using the digits 3 and 4, we can form the two-digit numbers like 33, 34, 43 and 44. Which of the above numbers is the greatest? Ft Which of the above numbers is the smallest? .ut- - -. _

1. Use the numbers from the yellow box to make 4 different two-digit numbers. Write your numbers in the green box. ln the blue box, write your numbers in decreasing order, starting from the top. One has been done for you. ll.-_l j |@H 'l=El-l^e,4 ll_n42I_t ll-__L2)Ll Ll__lJ l-) \",.r /--\\ ll q,t I t\\ttttl_-tt_tttttt_tttltt-/lttl_lllt3l_, tt(__l, l_ 1ll_ | l_ l_\" | L_' (_' Moths Around Us Maya lives in a township in which the houses are built along a large circle and the houses are numbered in order. Her house number is 42. Her friends live in house numbers 23,35, 44,29, 48, L9. A common friend, Aamna, wants to meet all of them. Arrange allthese house numbers in increasing order, so that Aamna can visit all of them one after another, without going back and forth. The house numbers in increasing order would be L9,23,29,35,42,44,48. lf Aamna starts from house number 48, and goes in decreasing order, then which house number will she visit at the end?

ji i Circle the correct answer. . - i t. rhe number name of 47 is c. forty-six i a. forty-eight b. fortY-seven c. 39 d. forty-three : o. 5t d. 27 i 2. What comes just before 38? d. 4L : a.36 d. 48 b.40 i :. wnat comes just after 24? I a.23 b. 24 c. 25 i: +. What comes in-between 38 and 40? t: a<xn5yu.+u ^Ad ii:. s. the greatest number amongst 48, 24, and 39 is b. 24 c. 39 a.42 The smallest number amongst 34, 35, and 3L is c. 31 b. 35 I om o two-digit number d. 30 whose fens ploce is one 7. The number 48 has tens. more thon 2 ond ones Ploce is one less thon 2.Con you a.4 b.8 guess who om I2 i c.48 d.6 : 8. The number 30 has ones. d. 1 i c.0 a? b. 30 i lnsert the symbol '< ' or '>' or '=' in the circles.: i: ^ JcVn\\ l/z\\ \\2( h 36U)43 /JJ :

Write the numbers that come jiuusstt beforree the given numbers. a'[ fi +sl D[ fi rs'] c'[ Y z+'] _ a--\\q--l}- 1---- --\\----\" \\__-./- '1-_-/- '1_--l- -\\_,/J e. tYrot o r---\\Y+5r-t.} r. r---\\r+-1lll}-.r \\_\".__,2__,-.-_r___^/ \\,\\____.--\\_-r__- e. i ^-,\\____---.__\\--_/_/- ,a--\\r.':,,}}26 h. fr-,----$-,.-4--s-.l^- |,-/---.\\-$--.-r-g-\\- I \\-___, -_-._\\_-_/ -/ --_^_,.-\\- \\,_/-/- .-\\_r -\\ \\_,r -/ 2. Write the nurnbers that come just after the given numbers. ruY ) ) {''YlooYa. /--\\ /--\\ b. /--\\ /.--\\ c. /--\\ /-\\ ) .-r l(_,2r_-,-,7,\\_,Yr_-_-_\\-l__,\\ .-/3,,8--\\Y /--\\ \\ '/18Ye Z--\\ ,,--\\ \\ r_________l_,, c |,6-\\/r-\\ I n iZ-'^I /--\\ I i L4\"\\/-Y\\ l 3. Write the numbers that come in-between the given numbers. - ?c l'tl-t ttt )--t----rI L\\ I | 47 <- <r-r ]> L.-l.-u.a-,) -I =>., tt?/ L ,q I ti31 \" 1-'F-18 I llF2--0-:=--.r' 3t l r 39 | <- TE IFHFHI EHF:IFT-FT;F;TF HE IFT' TTE HE IFTI IFH-ET->FI E F i HF F THHHHTHTgHIHgHEEIgHHHH!g dd-\"Fllllt I

a L. Tick (r'1 the one that b. has a shorter neck. a. has a longer tail. trii {\\ D 1i*r*t-Tt d. is lighter. T O is heavier. { $ ai TD DT 2. Circle the biggest animal. **= ll ri 5. Circle the shortest doll. e__?F)t,*;l t\\l/ ii ii ii i;

1. Put a tick (r')against.the longer rope. 2. Put a cross (*) against the lighter fruit. - 3. Think and fill in the blanrs. The tallest person in your family: The shortest person in your family: 4. Number the following mugs in the order of their height. (Start from the tallest mug.)

Measuring Length'-Ei- We can measure the length of an object by comparing it with an other obiect. longAbout 5 matchsticks About 7 matchsticks long paperclips. e/ivl1. -t,Measure your pencil box and objects inside it with the help of a. [t-\\ ItJAbout lpaper clips long. About paper clips long. c. About paper clips long. o. About paper clips long.

We can also use body parts to measure the length of any object. Handspan Finger Cubit Footspan Msry s; Objective: Measure the objects in the list below and fill in the blanks. Object How long? Your pencil box About fingers About handspa ns You r desk About - -ha ndspa ns About cubits -You r teacher's ta ble About -handspa ns About cu bits -footspa ns About paces Length of your -About classroom - -

t M easu ri n g Wei ght The weight of an object tells us how heavy or light the object is' Have you ever swung up ahd down on a see-saw? What happens when is empty? You go downl Vo, ,ii on one side .nd th\" other side How will You go uP? -*r.ri-rs':ui;E1(r On a see-saw the heavier side goes down and the lighter side goes up' I om lighter. 1. Tick (/) the see-saw that is balanced' *rW D 2. write H for the heavier thing a nd L for the lighter thing in each option ' D, c, E e '* J lt$ H n n nDr-) D t __J

We use a weighing balance to measure weight. A weighing balance is like a see-saw with pans. 3. Observe the pictures.and fill in the boxes. The book weighs about apples. The mangoes weish aboLutI oranges. c.I 'A healthy mind lives in a -- , healthy body.\" write two advantages of playing sports every day. Draw something lighter than a bat. 'An apple a day keeps the doctor away\". Write two benefits of eating fruits every day. Draw something heavier than an appre.

M easu ri ng Ca PacitY ).ir*rui) The capacity of a container tells how much liquid the container can hold. Rohan and Ria are comparing the capacities of their sippers. Whose sipper holds more water? We can see from the picture that Rohan's sipper holds more water. The capacity of Rohan's sipper is more than the capacity of Ria's sipper. L. Circle the container that has more capacity. a. b. d.

1. |The length of the pencil is about naner clins. ] a. o. 2. A jug holds L0 cups of water and Raima drinks 8 cups of water from t,,l-l tr-hthe jug. Tick the image that shows the leftover amount of water. rN. iii lll ,,.. a:.-.-_....:.-. -) ' ') 3. Box A is heavier than box B, and box B is heavier than box C. Which one of them is the heaviest box? ; AAoths Around Us Kavita wants to know the dimensions of her room. So she measures the length and the width of the room, in footspans, by using her foot. She asks her father also to measure the dimensions of the room. Her father measures the length of the room and the width of the room in footspans. Do they get the same measurement? Whv not? The footspan is a non-standard unit of measurement. Kavita's foot is smaller than her father's foot. So, the measurements will be different.

D[augg,IliD A-u4n/ Activity 1 Objective: Using weighing balance to find weight of different objects Materials required: Weighing balance, marbles, some toys, paper, pencils Method: The children can be divided into groups of three each' One child keeps the object whose weight is to be measured on the right pan of the balance. The other child keeps adding marbles on the left pan ofthe balance till both the pans are balanced. The third child counts the marbles and records the observation on a paper' This may be repeated for different toys. Toys Mdrbles Toy 1 foy 2 Toy 3 Activity 2 Objective: Comparing the capacities of different containers Materials required: A cuP, 4 water @tl MI bottles of different sizes and a oot of water Bottle Number of cups i Method: The children can be i divided into groups of four each' Each group is provided with the I reouired materials. Each child in the group is having a water bottle and I he fills his/her water bottle using the I cup provided and records his/her observation as given.

s rcLook at the picture and fill in the blank. _The pencil is longer than the eraser by matchsticks. ^1 b.2 c.3 d.0 Look at the pictures and fill in the blanks. _The mango weighs marbles. a.5 b.8 The lightest object is the a. pencil o. mango c, ooo q@Look at the pictures and answer the questions. X tThe one having the maximum capacity among X, and Z is b'Y c.za. x b.Y tThe one having the minimum capacity among X, and Z is c.Za.X ..#u-t -

-*T+T-gT1. Look at the collection of objects given below' **!\"1*''i;\";:{iL,, ffiffi Elephant Now answer the following questions. Sort the images shown above according to the suitable measure and write their names in the table. One has been done for you' Ladder Give one example of each where we use length, weight, and capacity in real life. 2. Rewrite the objects in the correct order' a. Arrange from shortest to longest- Ladder, Matchstick, Ruler: b. Arrange from lightest to heaviest- Notebook, Bag, Lunchbox: c. Arrange from highest capacity to least capacity- Bucket, Mug, Bottle: f, E.E-.!l E E F El .|,!r -!LE- tt 'A tLE rl lt-lt-ll 4d E AIt ' i i Lr Li i i i i !+{{ 1i ! I+!+! ++!EgTITgITET ^ *\"i fr-E-E-\"E ri r r H B r 's r u E .-El b

I Riddhima is getting bunches of safety pins ready for her tailoring class. To make counting easy, she packed pouches. has bunches of ten pins in different Let us see how many pins she has packed each pouch. Pouch L Lten=10 Ten Pouch 2 2 tens = 20 Twenty Pouch 3 3 tens = 30 Thirty I 4 tens = 40 mmmmPouch 4 Forty 5 tens = 50 Fifty

Numbers from 50 to 60 1. Count the lollipops in each row and fill inthe boxes' one has been done for vou. -&t:ri'':{*'l'!' nil ml nffi ?n?fmi inl =Firty-one@FF iliti mn iliil nn? Db. nin n?n nn nni iin? tl = Fifty-two ?iiii irn nili ii?'t? iini tl= Fifty-three lnti ilil lflillill nfi iillr iiill ni? iilti iliii o, Iriil fiiii?ili nni iiiii nn D= Fifty-four iiiii iliii nir inn inii nn ilil niiiiirl illil = Fifty-five E = Fifty-six fiii? ?nil nn iffil n f. ?iiil iinn?ir nil nni nin n?i? ?nn iii?l inl lil.|! ?illl ilni nimin inil E= Fifty-seven rilo i]?li ?f ffiit m.| .l n. fi?n iin! ffifilii il?l i?n D= Fifty-eight ilin liiii nir irn ,ffiI iiin nm nni mn Dinn nff ilin inn flffr = Fifty-nine jiliii ilil ilin niil nill = Sixty D mn inn liin in?i

Numbers from 51 to 80 Write the numbers and their number names in the space provided. Two have been done for you. @ -tYf..j fAr*^ry-o* Sixty-one [] [] @@ tl 63Lr IG@ n[] 74 E@ @EEE r-r 66 75 tl @EEr-r IE@ D 76 [] [] [] D @trE [] @@ tl

Numbers from 81 to 100 4 ,: ,.:t ,: Write the numbers and their number names in the space provided. Two have been done for you. [-8il eignty-on. [-Fl_-l Nin\"ty-on. @@ @EEr----r 83 93 @@ 84 E@ 95 @EEr--r 85 @@ 96 @@ tl 88 D @@ @@ 90 99 @ElE r-r 1 0 0 L------r

One Hundred ,r:,:, One hundred or L00 has L0 tens. llillllllI L hundred 10 tens and complete the picture in correct order. t,j^ _ 6,r g3 .t\" G 25. !,*; Name the animal traced above. Which is the largest land anlmal in the world ?

Count backwards starting from the first number, and fill In the missing n u m bers. *i !;E\\\\ I1 84 L t t 't' 'l r, f-\"\"\"\" 58 ':l L l\\ L! | ir 1. 1 49 MY Project CI How many hahdshakes? <]upPose Youmeel Your lriend How many handshakes Friends Handshakes would ther ebel only one continue this mwiohrhelwfrioe'nldhsre. eg,haankae hands with each friend once andrecordi1'in Lhe giv en f orrnal

s.A5 1,. Fill in the boxes. One has been done for you. [-*l f-l61a. 6 tens and 2 ones = b. s1 = tens and on\" f-lDc. 8tensand4ones = o. 66 = [-_-l tens and onu, [--l f-le. 5 tens and 7 ones = [--=l f. 80 = tens and onu, D []g. 9 tens and 3 ones = n. 73 = tens and f--_lon\", z. Write the number names. b. 86: o. 90: a. 65: t. 56: c. 77'. e. 42: Complete the number sequences. a. 60,61, o. c. 73, _ d. 4. Fill in th-e, boxes-.,76, Ia. Before lBetween nfter o. IBefore I Between nfter 65 75 77 57 59 74 63 65 59 ol- 58 93

5. Circle the greater number. One has been done for you. a' 56,@ o. 67,89 c. 77, d' 44,83 oa oo f. 51, 1s 6. Circle the smaller number. One has been done for you. a' @rt D. 37, 89 c. 28,82 d. 4,44 e. 89, 88 57, 62 L numberColour the leaf with the smallest the and the one rest of the leaves with the greatest number green Colour with brown colour. '. A7 i r'i:' B. Fill in the blanks with <, >, or =. dj{i' v-c. 49s Atit jtl j{l dIj A{l j v 3 Ir..s * o. f. {i, d dI I Yc. * h. d d4I s IL I

9. Rewrite the numbers in decreasine order. a. 30 50 40 20 h 2( 11 2a 58 c. 66 93 42 IA d. s0 33 t2 51 10. Rewrite the numbers in increasing order. a. 44 33 zz l.) b. 62 92 7I -71 L. 34 45 82 28 d. 40 82 90 30 a. iI am the number that comes after 56. I am |. ---_ l. b. II am the number that comes before 75. I am c. Iam the numberthat comes in between lq^nd7e t ^^ d. We are three friends. We come before 68 and after 64. in between 92 and 95. w\"a'ef--_land[-1.

fl08 A pony wanted to meet his animal friends in the forest. But he forgot their names! Help him find out their names by decoding using Ihe clue box. Also match their names with the pictu res. Clue box

Moths Around Us Our body parts are different in numbers-one head, two eyes, ten fingers in hands and so many teeth. lf Cqndy there are only few things, we can count them with dS' our fingers. lf there are more things, we should learn more numbers. Let us use a few things that you see at home to learn more numbers. { Count the number of squares on the chess board; $t count the number of times heart beats in 50 seconds when you sit properly on a chair. Similarly, count the g number of candies in a oacket. Counting these numbers willtell us the numbers up to 100. D[srse EaE Objective: Children should be able to express any two-digit number in terms of tens and ones. Materials required: Sufficient base L0 strips and small squares of equal size showing ones, paper and pencil. Method: Group the children into pairs. Provide them with both the L0 x l- strips and small squares. One child from each pair picks up a few strips and squares. The other child calls out the number of tens and ones picked and then the number formed bv them. Example: One child picks Number three 10 x l- strips and 1 small sq ua re. The other Thirty-one child calls out 3 tens and l- one. This is thirty-one. The observation is recorded in the table as given.

: Circle the correct option. c. 68 d. ss : 1. The number greater than 57 is b. 5/ 2. The number less than 85 is a. 34 b. 85 c. 98 d. 86 3. 67 has tens and 7 ones. d.0 d.5 a. 6 o. I c. 67 4. 59 has 9 ones and tens. a.4 b.9 c. 59 5. The number comes just before 70. a. 71, b. 59 c. 79 d. 72 d. 63 6. The number comes just after 55. d. 95 a. 64 b. 6s c. 66 7. 83 has less number oftens than a. 45 b. 55 c. 76 8. The smallest number amongst 35, 25, and 75 ts b. 25 10 is the smollest two-di9it number a. 35 d.0 ond 99 is +he largesl two-digit nutnben. 9. The largest number amongst 30,7, and 49 is b.7 d. t2 a. 30 c. 49 10. The number has 8 tens and 3 ones. a.38

Fill in the missing numbers in the circles given below and write the letters next to these numbers in the boxes below to decode the secret message. sOne has been done for vou. <l t, O1 tt 21 32z (12 R) zl 41 \\..-9/ bI 81 42 52 o1 72 92 l5 23 55 \\ ) 53 \\\"/ 73 83 /--;\\ \\L/ l)\\5/ ?4 44 64 74 94 O355 15 25 45 55 65 85 L rl 6 t6 36 46 \\a_.-i_>/) oo 76 B6 96 37t7 27 388 18 r\\ -;l',-)/ 47 57 67 77 \\_-,, 97 48 o6 78 88 98 o9 t9 z9 5Y +> 59 89 99 O10 20 30 40 ( t-) 60 70 80 on E fl^26^t-:.r\" lr g l--^6i THIH tt;H HHi HTIiHH:HTTIFEFIFIFIFTFIFEFTE. ; ; ltd--l'i;T H IEETIgHHHHH _ ,,\"

1o uptto99 Here is an interesting crossword. lt involves pictures, numbers and words' Read the clues and fill in the boxes with number names of the final answer' You.One has been done for Across 2. 5 candles +4candles = 9 (Nine) 4. 4 bats,2 crossed out d\" 5. 5 balls,2 crossed out | - I more tnan ru 8. 5+8+6 Down ,N 3 4 1. 3 pencils+ 3 pencils I IN E III 3. 5 apples+3 apples I 4. 5 erasers + 5 erasers 9 6. 6 taken away from 20 9. 5 taken from L2 TI

Adding 2-digit and l-digit Numbers ffii Shilpa drew 24 stars. Then she drew 3 more. How many stars did she oraw in all? 24+3=? Add the ones. Add the TH --- aaa a aaa -- On the abacus 'rA - 2tens+4ones + 3= 0tens+3ones 27=Ztens+7ones Hence, Sh ilpa drew 27 stars in all. EE 6 EEExam ples 5 2 4 46+2= t4-Tl 35+4= k t EE EEb. EE 4 2 ....#.

Addition of Tens ' Add the number of grapes in tens. One has been done for you. \"({f EE 'f{( IIET -q,3',0 30 +10 +20 tr-ol {{ 'f{{{ 40 EEI o. EEI 40 ft f+30 { 20 ?(({ { 1. Add the following: . Elil 40 A. EEI b. IIET +'J,0 d. EE 80 60 + 1_ 0 +20 c nrel 20 +30 E. EE f.Ed 70 +20 h Etil 30 )U 10 +40 +50 +30

Adding 2-digit Numbers Addition without Regrouping Adam read 47 pages of a.book on Monday. He read another 31 pages on Tuesday. How many pages did Adam read in all? -!.t.:47 +31,=? Step 1: Add the ones. ++- ,-_ aafaaa On the abacus a -!H_r-T9+] Step 2: Add the tens. aaaaaaa EET 31 tt- 8l == Hence, Adam read 78 pages in all. When we add zero to a number, the answer is the same number. 5+0=5 0+6=6 9+0=9

1.. Add the following: EE EEI a. nEt 42 32 23 6 5 6 e. nEl EE 72 d. EET 6 85 61 3 5 o EE n. EEI EET 42 23 72 91 6 5 EEI K EEI t. EEI 70 24 46 15 10 10 r---_l Pattern in Addition Look at the pattern in the parts a, b, and c, and fill in the boxes for parts d, e, and f. DE@o. + D@ E E E Ea. DE@f. + E@b. @ E E @c.