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1010024-Alpine-G3-ConceptMax-Maths-Part1_text

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3 MATHEMATICS WORKBOOK PART 1 Name : __________________________________ Section: ________________ Roll No:__________ School : __________________________________

How do we hone crucial learning? R REMEMBERING U UNDERSTANDING The first step of the learning process As we progress with recollecting information, involves remembering new things we parallelly start understanding it by breaking and recollecting all crucial information it down and exploring its length and breadth. such as meanings and concepts. Chapter Shapes 1 This section has Multiple Concept 1.1: Vertices and Diagonals of Two-Dimensional Shapes Choice Questions. Recall This section has Multiple Multiple Choice Questions Choice Questions, Fill in the Blanks, Very Short Answer, 1) The shape of is: [A ] Short Answer and Long (D) Triangle Answer Questions. (A) Circle (B) Square (C) Rectangle (C) 2D [D ] 2) A triangle is a _________ (D) both (B) and (C) (A) open (B) closed 3) The shape of is: [B ] (A) Square (B) Rectangle (C) Triangle (D) Circle Remembering & Understanding Multiple Choice Questions 4) The point where at least two sides of a meet is called a/an ________. [ C ] (A) line (B) diagonal (C) vertex (D) edge

A APPLICATION H H.O.T.S. We begin relating what we learn to Having applied the concepts learnt, we real life situations around us, thereby extend the field of application to more applying what we have learnt. advanced and challenging scenarios. Application This section has Very Short Answer, Short Answer and Short Answer Questions Long Answer Questions. 17) Complete the following table: This section has Short Answer Shapes Number of vertices Number of diagonals and Long Answer Questions. 2 4 42 69 Higher Order Thinking Skills (H.O.T.S.) Short Answer Question 21) Name a three-dimensional figure that has a) A circular base b) A rectangular base c) A square base

CONTENTS 1 Shapes.......................................1 1.1 Vertices and Diagonals of Two Dimensional Shapes................................1 2 Patterns.....................................7 2.1 Patterns in Shapes and Numbers....................7 3 Numbers..................................13 3.1 Count by Thousands........13 3.2 Compare 4-digit Numbers............................18 4 Addition...................................22 4.1 Add 3-digit and 4-digit Numbers................22 4.2 Estimate the Sum of Two Numbers....................27 4.3 Add 2-digit Numbers Mentally............................32 5 Subtraction............................36 5.1 Subtract 3-digit and 4-digit Numbers..............36 5.2 Estimate the Difference Between Two Numbers..........................41 5.3 Subtract 2-digit Numbers Mentally..........45 6 Multiplication........................50 6.1 Multiply 2-digit Numbers...........................50

6.2 Multiply 3-digit Numbers by 1-digit and 2-digit Numbers.........54 6.3 Double 2-digit and 3-digit Numbers Mentally............................. 59



1. Shapes Concept 1.1: Vertices and Diagonals of Two-dimensional Shapes Recall Multiple Choice Questions 1) The shape of is: [] (A) Circle (B) Square (C) Rectangle (D) Triangle 2) A triangle is a/an _________ figure. [ ] (A) 2D (B) closed (C) Both (A) and (B) (D) open 3) The shape of is: [] (A) Square (B) Rectangle (C) Triangle (D) Circle & Remembering & Understanding Multiple Choice Questions ] 4) The point where at least two sides of a figure meet is called a/an _____. [ (A) line (B) diagonal (C) vertex (D) edge Shapes 1

5) A straight line that joins the opposite vertices of a closed figure is called a/an _________. [] (A) vertex (B) diagonal (C) line (D) edge DC 6) The diagonals in A B are: [ ] (A) AB, BC (B) AD, CB (C) AC, BD (D) AB, DC Fill in the Blanks 7) A triangle has diagonals. 8) A circle has vertices. 9) A square and a rectangle have vertices. Very Short Answer Questions 10) What is the unique feature of a square? Solution: 11) How many vertices does a triangle have? Solution: 12) How many diagonals does a circle have? Solution: Short Answer Questions 13) Complete the following table: Shape Vertices Diagonals PQ SR 2

14) Complete the following table: Shape Vertices Diagonals A DB C Long Answer Questions A B E c 15) Look at the figure and answer the following questions: D a) How many vertices does it have? Name them. F b) How many diagonals does it have from A? Name them. Solution: 16) Draw a square WXYZ and answer the following questions: a) Name the vertices. b) Name the diagonals. Solution: Shapes 3

Application Short Answer Questions 17) Complete the following table: Shapes Number of vertices Number of diagonals 18) Complete the following table: Number of Number of Shapes vertices diagonals Long Answer Questions 19) Look at the picture given and answer the following questions: a) What is the shape of this object? b) How many sides does it have? c) How many diagonals does it have? d) How many vertices does it have? 4

Solution: 20) Look at the picture and answer the following: a) What is the shape of this object? b) How many sides does it have? c) How many diagonals does it have? d) How many vertices does it have? Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Name a 3-dimensional figure that has the following: a) A circular base b) A rectangular base c) A square base Shapes 5

Solution: Long Answer Question 22) Look at the figure and answer the following questions: a) Name the vertices GF b) Name the edges D CH E c) Name the faces AB Solution: 6

2. Patterns Concept 2.1: Patterns in Shapes and Numbers [] Recall Multiple Choice Questions 1) Which among the following is a pattern found on carpets? (A) (B) (C)  (D) 2) Which among the following is a pattern of window grills? [] (A) (B) (C)  (D) Patterns 7

3) Which of the following is a pattern in nature? [] (A) (B) (C) (D) & Remembering & Understanding Multiple Choice Questions [ ] 4) Which among these shows alternate circle (O) and triangle ( )? (A) (B) AABBAABB (C) EE(D) 5) What is the set of basic shape(s) in the pattern ? [] (A) (B) (C) (D) 6) The number that fills the blank in the pattern 4, 10, 16, 22, ___ is: [ ] (A) 20 (B) 26 (C) 28 (D) 30 Fill in the Blanks 7) 2, 4, ____ , ____ , 10, 12, 14 8) 3, 6, ____ , ____ , 15, 18, 21 8

9) A pattern using two squares and one triangle is . Very Short Answer Questions 10) What is the basic shape(s) in the pattern given? Solution: 11) Create a pattern using the shapes Solution: 12) Complete the growing pattern given: 110,120 ____, ____, 150,160,170 … Solution: Short Answer Questions 13) What is a pattern? Draw a pattern with Solution: 14) Do number patterns follow any rule? If yes, name any two types of number patterns? Solution: Patterns 9

Long Answer Questions 15) Complete these patterns. Write the next four terms. a) 4, 8, 12, ______, ______, ______, ______. b) 10, 20, 30, 40, ______, ______, ______, ______. c) 11, 22, 33, ______, ______, ______, ______. Solution: 16) Complete these patterns by writing the next four numbers in each. a) 8, 16, 24, ______, ______, ______, ______. b) 7, 14, 21, ______, ______, ______, ______. c) 12, 24, 36, ______, ______, ______, ______. Solution: Application Short Answer Questions 17) Find the basic tile in the following tile patterns. Mark it on the tile. a) b) Solution: 10

18) Look at these tile patterns. Draw the shapes used in these patterns. a) b) Solution: Long Answer Questions 19) What is the shape of the basic tile in the following patterns? a) b) c) d) Solution: Patterns 11

20) What is tiling? Where do we see tiling? Do we see tiling patterns in parking areas? Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Complete the pattern. a) 1a, 6b, 11c, ____, ____, ____. b) 1a, 5c, 9e, ____, ____, ____. Solution: Long Answer Question 22) Create patterns using shapes and the given rule. a) Rule: Repeat each shape twice Basic shapes: b) Rule: Begin with 2, add 2 and subtract 1 alternately. Solution: 12

3. Numbers Concept 3.1: Count by Thousands Recall Multiple Choice Questions 1) The smallest 3-digit number is: [ ] ] (A) 100 (B) 999 (C) 101 (D) 900 ] 2) The number name of 425 is: [ (A) Four hundred and fifty-two (B) Four hundred and five (C) Four hundred and twenty-five (D) Four hundred and fifty-five 3) The digit in the tens place of the number 482 is: [ (A) 6 (B) 0 (C) 4 (D) 8 & Remembering & Understanding [] [] Multiple Choice Questions 4) The standard form of 4000 + 400 + 40 + 4 is: (A) 4004 (B) 4040 (C) 4444 (D) 4440 5) One represents 100 then represents: (A) 250 (B) 300 (C) 350 (D) 200 Numbers 13

6) The smallest 4-digit number is: [ ] (A) 9999 (B) 1000 (C) 100 (D) 999 Fill in the blanks 7) The form in which a number is written as the sum of the place values of its digits is called its ____________________________. 8) The place value of 9 in 9320 is ____________. 9) The number name of 5060 is __________________________________. Very Short Answer Questions 10) Expand 4378. Solution: 11) Write the standard form of 6000 + 300 + 1. Solution: 12) Write the number name of 3852. Solution: Short Answer Questions 13) Write the expanded form and the number name of 1798. Solution: 14) Write the expanded form of 8136. Write the number in words. Solution: 14

Long Answer Questions 15) Write 3000 + 400 + 60 + 5 in its standard form. Give its number name. Solution: 16) Using the expanded forms of the following numbers, write them in words: a) 6021 b) 2138 Solution: Numbers 15

Application Short Answer Questions 17) Form a number with 8 in the thousands place, 3 in the hundreds place, 7 in the tens place and 4 in the ones place and write its number name. Solution: 18) Form a number with 6 in the thousands place, 1 in the hundreds place, 4 in the tens place and 9 in the ones place and write its number name. Solution: Long Answer Questions 19) Mona has four notes of ` 2000, five notes of ` 100, one note of ` 10 and four coins of ` 1. How much money does she have? Write the amount in figures and words. Solution: 16

20) The number of students in different schools are given below: St. Anns: 4621 Global: 3275 Akshara: 6485 Balaji: 8216 Narayana: 2120 a) How many students are there in Akshara school? Write the number in words. b) How many students are there in Balaji school? Write the number in words. Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Show these numbers on the abacus by drawing beads. a) 1725 b) 1003 Solution: Long Answer Question 22) A 4-digit number has 6 in the thousands place and 4 in the hundreds place. The digit in the tens place is 2 less than the digit in the thousands place. The digit in the ones place is 1 less than that in the hundreds place. Find the number. Numbers 17

Solution: Concept 3.2: Compare 4-digit Numbers Recall Multiple Choice Questions 1) The largest number among the following is: [ ] (A) 3165 (B) 169 (C) 68 (D) 7204 2) The smallest number among 302, 30 and 3 is: [ ] (A) 3 (B) 302 (C) 30 (D) 320 3) The symbol that should be written in the blank in 346 ___ 3046 is: [ ] (A) < (B) > (C) = (D) All of these & Remembering & Understanding Multiple Choice Questions 4) The greater of the numbers 215 and 3610 is: [] (A) 215 (B) 3610 (C) Both are equal (D) Cannot be said 5) The smallest 4-digit number is: [] (A) 1001 (B) 1000 (C) 1100 (D) 1010 6) The greatest 4-digit number is: [] (A) 9999 (B) 9000 (C) 999 (D) 1000 18

Fill in the Blanks 7) The smallest number among 3150, 5013, 5130, 5031 is ________. 8) The greatest number among 3150, 5013, 5130, 5031 is ________. 9) Fill in the following with <, > (or) = symbol. 6512 ________ 5261 Very Short Answer Questions 10) Which is the greater of the numbers 5265 and 5652? Solution: 11) Compare the numbers using the symbols <, > (or) =. a) 4612 ______ 4626 b) 3780 ______ 3087 12) Find the greater number from the following: 6392, 6398 Solution: Short Answer Questions 13) Write the smallest and the largest 4-digit numbers. Solution: 14) W rite the smallest and the largest numbers among 1478, 9240, 2584, 8362 and 1024. Solution: Long Answer Questions 15) Pick the smallest and the largest numbers among 863, 3972, 183 and 748. Solution: Numbers 19

16) Write the smallest and the largest of the numbers 7021, 7822, 7321, 7429 and 7676. Compare them using the symbols <, > or =. Solution: Application Short Answer Questions 17) A rrange 4305, 4906, 4005 and 4126 in ascending order and write the smallest number. Solution: 18) Form 4-digit numbers using 4, 5, 2 and 3, repeating the two smallest digits. Find the largest and the smallest among them. Solution: Long Answer Questions 19) 4 732 people visited a zoo on Friday and 6382 people visited it on Sunday. On which day did fewer people visit the zoo? Solution: 20

20) Arrange the following numbers in ascending and descending orders. a) 2061, 2160, 2601, 1620, 1260 b) 8139, 8913, 8391, 8816, 8618 Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Rohan arranged the numbers 6523, 1642, 1872 and 3219 in the ascending order as 1872 < 1642 < 3219 < 6523. Harsha arranged them as 1642 < 1872 < 3219 < 6523. Find out who is correct and explain why. Solution: Long Answer Question 22) A 4-digit number that lies between 9990 and the largest 4-digit number has the sum of its digits as 33. Find the number. Solution: Numbers 21

4. Addition Concept 4.1: Add 3-digit and 4-digit Numbers Recall Multiple Choice Questions 1) What is adding two or more numbers, by writing one below the other called? [ ] (A) Horizontal addition (B) Vertical addition (C) Vertical multiplication (D) Vertical subtraction 2) What is the sum of 100 and 200? [ ] (A) 400 (B) 300 (C) 600 (D) 200 3) What is the sum when we carry forward the first digit while adding the ones digits? [ ] (A) 10 (B) Less than 10 (C) Greater than 10 (D) Both (A) and (C) & Remembering & Understanding Multiple Choice Questions 4) Which digit should we carry forward, if the addition in the tens place is 13? [ ] (A) 1 (B) 3 (C) 13 (D) Both (A) and (B) 22

5) What do we first add in the addition of two 3-digit numbers? [ ] (A) The digits in the ones place (B) The digits in the tens place (C) The digits in the hundreds place (D) All of the above 6) In addition, if the sum of the digits in the tens place is more than 9, we have to carry it forward to the: [] (A) ones place (B) thousands place (C) hundreds place (D) All of the above Fill in the Blanks 7) The sum of the numbers 222 and 444 is _________. 8) The sum of 1100 and 2200 is __________. 9) If the sum of the digits in the hundreds place is more than 9, we have to carry forward to the ___________________ place. Very Short Answer Questions 10) Add 1111 and 1002. Solution: 11) Add 4100 and 4200. Solution: 12) What is the sum of 200 and 800? Solution: Short Answer Questions 13) What is the sum of 5375 and 2103? Solution: Addition 23

14) Add: 2543 and 6345 Solution: Long Answer Questions 15) Solve the following: a) 569 + 483 b) 7728 + 2036 Solution: 16) Solve the following: a) 7866 + 1684 b) 3898 + 5783 Solution: 24

Application Short Answer Questions 17) Shyam has 269 pens and Ritesh has 832 pens. How many pens do they have in all? Solution: 18) Ravi’s garden has 673 roses. Rahul’s garden has 978 roses. How many roses are there in all in their gardens? Solution: Addition 25

Long Answer Questions 19) Surya gave ` 3609 to his daughter and ` 2630 to his son to buy books. How much money do they have altogether? Solution: 20) Ajit has 2668 marbles and Suman has 5651 marbles. How many marbles do they both have together? Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Frame a question from the given information. Sunita scored 168 runs in Cricket and Anita scored 172 runs. Solution: 26

Long Answer Question 22) School A has 1205 students. School B and School C have 2211 and 1671 students respectively. What is the total number of students in the three schools? Solution: Concept 4.2: Estimate the Sum of Two Numbers Recall Multiple Choice Questions 1) Choose the missing number. [ ] 24 + 42 = __6 [ ] [ ] (A) 5 (B) 9 (C) 6 (D) 7 (D) 100 2) What is the sum of 200 and 300? (D) 820 (A) 500 (B) 300 (C) 600 3) 800 + 20 = ________ (A) 800 (B) 802 (C) 280 Addition 27

& Remembering & Understanding Multiple Choice Questions 4) The value of 37 rounded off to the nearest tens is: [ ] [ ] (A) 30 (B) 40 (C) 3 (D) 10 ] 5) The value of 82 rounded off to the nearest tens is: (A) 90 (B) 85 (C) 100 (D) 80 6) The value of 165 rounded off to the nearest tens is: [ (A) 160 (B) 150 (C) 170 (D) Both (A) and (C) Fill in the Blanks 7) The estimated sum of 405 and 215 is _________ 8) The value of 78 rounded off to nearest tens is _______. 9) The value of 51 rounded off to nearest tens is _______. Very Short Answer Questions 10) Estimate the sum of 15 and 21. Solution: 11) Estimate the sum of 26 and 24. Solution: 12) Estimate the sum of 81 and 11. Solution: Short Answer Questions 13) Estimate the sum of the following: 354 + 236 Solution: 28

14) Estimate the sum of the following: 567 + 312 Solution: Long Answer Questions 15) Estimate the sums of the following: a) 384 + 297 b) 416 + 261 Solution: 16) Estimate the sum of the following: a) 224 + 567 b) 623 + 325 Solution: Addition 29

Application Short Answer Questions 17) Sonu has 46 red roses and Mona has 22 yellow roses. Estimate the total number of roses that they have. Solution: 18) Rakesh has 57 pencils and Mukesh has 43 pencils. Estimate the total number of pencils that they have. Solution: Long Answer Questions 19) Sunny wants to distribute cupcakes in his class. There are 48 boys and 54 girls. Estimate the number of cupcakes that Sunny should take to the class. Solution: 30

20) Khushi bought two pizzas for ` 86 and Tanish bought one pizza for ` 43. Estimate the total amount to be paid for the pizzas? Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Priya collected 456 stamps and Riya collected 289 stamps. Estimate the total number of stamps that they have. Solution: Long Answer Question 22) Manish has 38 pencils and 21 erasers. Karthik has 47 pencils and 32 erasers. Estimate the total number of pencils and erasers with them. Solution: Addition 31

Concept 4.3: Add 2-digit Numbers Mentally Recall Multiple Choice Questions 1) The sum of 2 and 3 is: [] [] (A) 2 (B) 3 (C) 4 (D) 5 [] (C) 8 (D) 7 2) The sum of 7 and 1 is: (C) 9 (D) 12 (A) 5 (B) 6 3) The sum of 8 and 3 is: (A) 11 (B) 10 & Remembering & Understanding Multiple Choice Questions 4) The sum of the ones digits of 21 and 35 is: [ ] ] (A) 4 (B) 5 (C) 6 (D) 7 ] 5) The sum of the tens digits of 23 and 52 is: [ (A) 6 (B) 7 (C) 5 (D) 4 6) The sum of 22 and 11 is: [ (A) 33 (B) 43 (C) 53 (D) 11 Fill in the Blanks 7) While adding mentally, first we add the digits in the ____________ place. 8) The sum of 21 and 11 is _________. 9) The sum of 31 and 13 is _________. 32

Very Short Answer Questions 10) Find the sum of 22 and 44 mentally. Solution: 11) Find the sum of 45 and 42 mentally. Solution: 12) Find the sum of 54 and 41 mentally. Solution: Short Answer Questions 13) Add mentally: a) 11 and 80 b) 43 and 53 b) 36 and 43 Solution: 14) Add mentally: a) 42 and 31 Solution: Long Answer Questions 15) Add the following mentally: a) 64 and 65 b) 85 and 52 c) 56 and 52 d) 88 and 77 Solution: 16) Add the following mentally: a) 92 and 45 b) 75 and 53 c) 64 and 46 d) 35 and 77 Solution: Addition 33

Application Short Answer Questions 17) Anitha scored 37 marks in Term I and 51 marks in Term II in Mathematics. What is her total score in both the terms? Solve mentally. Solution: 18) Section A of Class 3 has 41 students and Section B has 43 students. What is the total number of students in Class 3? Solve mentally. Solution: Long Answer Questions 19) Pinky has 22 red roses and 39 pink roses. How many roses does she have in all? Solve mentally. Solution: 34

20) Rohit has 63 white sheets and 42 yellow sheets of papers. How many sheets of paper does he have in all? Solution: Higher Order Thinking Skills (HOTS) Short Answer Question 21) Add mentally: 17, 26 and 37 Solution: Long Answer Question b) 65, 48, and 27 22) Add mentally: a) 52, 12 and 31 Solution: Addition 35

5. Subtraction Concept 5.1: Subtract 3-digit and 4-digit Numbers Recall Multiple Choice Questions 1) We begin subtraction from the: [] [] (A) tens place (B) ones place [] (C) hundreds place (D) thousands place 2) The difference when 55 is subtracted from 95 is: (A) 70 (B) 60 (C) 40 (D) 50 3) The difference between 500 and 300 is: (A) 100 (B) 300 (C) 400 (D) 200 & Remembering & Understanding Multiple Choice Questions 4) The difference when 1 is subtracted from a number is ______. [] (A) the number itself (B) zero (C) the previous number (D) the next number 36

5) Find the missing number in the following: [ ] ] Th H T O 5 835 −2 3 1 2 3 5 2 __ (A) 1 (B) 2 (C) 3 (D) 4 6) The difference when 3333 is subtracted from 6666 is: [ (A) 2222 (B) 3333 (C) 3330 (D) 3000 Fill in the Blanks 7) In subtraction of 4-digit numbers, regrouping can be done in thousands, hundreds and _________. 8) 6000 − 6000 = _______. 9) 3333 − 1111 = ___________. Very Short Answer Questions 10) What is the difference between 9888 and 1000? Solution: 11) What is the difference between 8888 and 8000? Solution: 12) Subtract 2000 from 6000. Solution: Short Answer Questions 13) Subtract 2148 from 3569. Solution: Subtraction 37

14) Subtract 4635 from 7676. Solution: Long Answer Questions 15) Solve the following: a) 631 – 444 b) 4569 – 3461 Solution: 16) Solve the following: a) 840 – 522 b) 6584 – 4485 Solution: 38

Application Short Answer Questions 17) 312 birds were sitting on a tree. Some birds flew away. Now, there are 231 birds on the tree. How many birds flew away? Solution: 18) There is 850 g of sugar in a bowl. Seema used 645 g of sugar for making halwa. How much sugar is left in the bowl? Solution: Subtraction 39

Long Answer Questions 19) 6348 children went on a picnic. At a bus stop, some more children got into one of the buses. When they reached the picnic spot, there were 7821 children altogether. How many children got into the bus at the bus stop? Solution: 20) Rinki’s house has 3975 tiles. Her cousin’s house has 9271 tiles. How many more tiles are there in Rinki’s cousin’s house? Solution: 40

Higher Order Thinking Skills (HOTS) Short Answer Question 21) Frame a word problem using 842 – 422 = 420. Solution: Long Answer Question 22) Frame word problems for the following: a) 184 – 127 b) 1246 – 1230 Solution: Concept 5.2: Estimate the Difference between Two Numbers Recall Multiple Choice Questions 1) Rounding off 42 to the nearest 10s, we get: [] [] (A) 50 (B) 40 (C) 45 (D) 55 (D) 99 2) Rounding off 91 to the nearest 10s, we get: (A) 100 (B) 90 (C) 95 Subtraction 41

3) Rounding off 60 to the nearest 10s, we get: [] (A) 50 (B) 40 (C) 60 (D) 65 [ ] [ ] & Remembering & Understanding [ ] Multiple Choice Questions 4) The difference between 77 and 23 is about: (A) 50 (B) 60 (C) 70 (D) 40 5) The estimated difference between 69 and 24 is: (A) 50 (B) 40 (C) 45 (D) 55 6) The estimated difference between 21 and 11 is: (A) 5 (B) 15 (C) 10 (D) 20 Fill in the Blanks 7) The estimated difference between 75 and 45 is ________. 8) The estimated difference between 65 and 45 is ________. 9) The estimated difference between 43 and 92 is ________. Very Short Answer Questions 10) Estimate the difference between 64 and 37. Solution: 11) Estimate the difference between 37 and 31. Solution: 12) Estimate the difference between 77 and 92. Solution: Short Answer Questions 13) Estimate the difference between 527 and 236. Solution: 42

14) Estimate the difference between 458 and 274. Solution: Long Answer Questions 15) Estimate the difference between the following numbers: a) 707 and 263 b) 549 and 296 Solution: 16) Estimate the difference between in the following numbers: a) 870 and 648 b) 743 and 378 Solution: Subtraction 43

Application Short Answer Questions 17) Sam has 56 green balloons. He gave 25 balloons to Sandy. Estimate how many balloons remain with Sam. Solution: 18) Mumbai has 83 bridges and Delhi has 68 bridges. Estimate how many more bridges are in Mumbai than in Delhi. Solution: Long Answer Questions 19) In a school of 589 students, 376 are girls. About how many students are boys? Solution: 20) Samatha has 276 balloons. Mamtha has 237 balloons. About how many balloons does Samatha have more than Mamtha? Solution: 44


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