My NUMBER OPERATIONS Book 1 Name: ___________________________________ Section: ________________ Roll No.: _________ School: __________________________________
Contents 1 Breaking Down Numbers........................................... 1 2 Counting by 0s and 1s.............................................. 22 3 Skip Counting.............................................................28 4 Multiplication Tables................................................. 40 Number Operations g1.indb 2 07-11-2018 17:01:39
BREAKING DOWN NUMBERS Let us LEARN Expand the numbers represented below. = tens = ones Example: = 3 tens + 2 ones = 32 1 = ____ tens + ____ ones = ____ 2 = ____ tens + ____ ones = ____ 1 Number Operations g1.indb 1 07-11-2018 17:01:42
3 = ____ tens + ____ ones = ____ 4 = ____ tens + ____ ones = ____ 5 = ____ tens + ____ ones = ____ 6 = ____ tens + ____ ones = ____ 7 = ____ tens + ____ ones = ____ 2 07-11-2018 17:01:45 Number Operations g1.indb 2
8 = ____ tens + ____ ones = ____ 9 = ____ tens + ____ ones = ____ 10 = ____ tens + ____ ones = ____ 11 = ____ tens + ____ ones = ____ 12 = ____ tens + ____ ones = ____ 3 Breaking Down Numbers Number Operations g1.indb 3 07-11-2018 17:01:47
13 = ____ tens + ____ ones = ____ 14 = ____ tens + ____ ones = ____ 15 = ____ tens + ____ ones = ____ 16 = ____ tens + ____ ones = ____ 17 = ____ tens + ____ ones = ____ 4 07-11-2018 17:01:49 Number Operations g1.indb 4
18 = ____ tens + ____ ones = ____ 19 = ____ tens + ____ ones = ____ 20 = ____ tens + ____ ones = ____ 21 = ____ tens + ____ ones = ____ 22 = ____ tens + ____ ones = ____ 5 Breaking Down Numbers Number Operations g1.indb 5 07-11-2018 17:01:51
23 = ____ tens + ____ ones = ____ 24 = ____ tens + ____ ones = ____ 25 = ____ tens + ____ ones = ____ 26 = ____ tens + ____ ones = ____ 27 = ____ tens + ____ ones = ____ 6 07-11-2018 17:01:53 Number Operations g1.indb 6
Expand the following = tens = ones numbers. 1 65 = ____ + ____ 2 72 = ____ + ____ 3 27 = ____ + ____ 4 98 = ____ + ____ 5 26 = ____ + ____ 6 75 = ____ + ____ 7 86 = ____ tens + ____ ones 8 28 = ____ tens + ____ ones 9 12 = ____ ones + ____ tens 10 32 = ____ ones + ____ tens 11 69 = ____ tens + ____ ones 12 18 = ____ ones + ____ tens 13 94 = ____ tens + ____ ones 14 29 = ____ ones + ____ tens 15 87 = ____ tens + ____ ones 7 Breaking Down Numbers Number Operations g1.indb 7 07-11-2018 17:01:54
Add the numbers shown below. = tens = ones 1 = 10 ten ones Example: + 1 = (3 + 1) tens + (2 + 2) ones = 44 + = ________ tens + ________ ones = ________ 2 + = ________ tens + ________ ones = ________ 8 Number Operations g1.indb 8 07-11-2018 17:01:56
3 + = ________ tens + ________ ones = ________ 4 + = ________ tens + ________ ones = ________ 5 + = ________ tens + ________ ones = ________ 9 Breaking Down Numbers Number Operations g1.indb 9 07-11-2018 17:01:58
6 + = ________ tens + ________ ones = ________ 7 + = ________ tens + ________ ones = ________ 8 + 07-11-2018 17:02:00 = ________ tens + ________ ones = ________ 10 Number Operations g1.indb 10
9 + = ________ tens + ________ ones = ________ 10 + = ________ tens + ________ ones = ________ 11 + = ________ tens + ________ ones = ________ 11 Breaking Down Numbers Number Operations g1.indb 11 07-11-2018 17:02:01
12 + = ________ tens + ________ ones = ________ 13 + = ________ tens + ________ ones = ________ 14 + 07-11-2018 17:02:03 = ________ tens + ________ ones = ________ 12 Number Operations g1.indb 12
Add the following numbers mentally. 1 44 + 30 = 12 67 + 20 = 2 22 + 70 = 13 15 + 50 = 3 65 + 10 = 14 32 + 40 = 4 63 + 20 = 15 50 + 10 = 5 29 + 60 = 16 65 + 90 = 6 87 + 50 = 17 23 + 70 = 7 57 + 30 = 18 68 + 20 = 8 40 + 50 = 19 31 + 40 = 9 56 + 20 = 20 62 + 10 = 10 13 + 80 = 21 37 + 60 = 11 59 + 30 = 22 84 + 10 = Add the following numbers. 1 76 2 86 3 26 +13 +12 +39 4 62 5 35 6 18 +12 +27 +83 Number Operations g1.indb 13 13 Breaking Down Numbers 07-11-2018 17:02:04
7 28 8 30 9 85 +40 +35 +12 10 8 5 11 3 0 12 1 0 +10 +16 +68 13 4 4 14 5 0 15 5 1 +52 +36 +31 16 7 5 17 8 3 18 4 1 +14 +28 +49 19 5 3 20 3 6 21 1 0 +16 +62 +67 22 5 5 23 2 9 24 7 4 +25 +10 +27 14 07-11-2018 17:02:05 Number Operations g1.indb 14
25 2 5 26 9 5 27 2 5 +32 +11 +23 28 5 0 29 3 8 30 7 8 +19 +50 +21 31 4 4 32 7 6 33 9 9 +59 +23 +10 34 6 6 35 7 3 36 1 5 +32 +18 +64 37 4 2 38 9 7 39 2 1 +17 +17 +23 40 6 2 41 2 2 42 8 6 +11 +52 +10 Number Operations g1.indb 15 15 Breaking Down Numbers 07-11-2018 17:02:06
Subtract the numbers = tens = ones shown below. Example: – = (3 – 1) tens + (2 – 1) ones = 21 1 – = ________ tens + ________ ones = ________ 2 – 07-11-2018 17:02:08 = ________ tens + ________ ones = ________ 16 Number Operations g1.indb 16
3 – = ________ tens + ________ ones = ________ 4 – = ________ tens + ________ ones = ________ 5 – = ________ tens + ________ ones = ________ 17 Breaking Down Numbers Number Operations g1.indb 17 07-11-2018 17:02:09
6 – = ________ tens + ________ ones = ________ 7 – = ________ tens + ________ ones = ________ 8 – 07-11-2018 17:02:11 = ________ tens + ________ ones = ________ 18 Number Operations g1.indb 18
Subtract the following numbers mentally. 1 48 – 10 = 12 87 – 50 = 2 72 – 30 = 13 99 – 40 = 3 65 – 50 = 14 63 – 30 = 4 78 – 40 = 15 83 – 70 = 5 39 – 20 = 16 60 – 50 = 6 98 – 80 = 17 97 – 70 = 7 15 – 10 = 18 20 – 10 = 8 93 – 90 = 19 69 – 30 = 9 37 – 20 = 20 57 – 20 = 10 41 – 10 = 21 63 – 40 = 11 52 – 40 = 22 73 – 60 = Subtract the following numbers. 1 90 2 88 3 82 –40 –86 –61 4 98 5 54 6 16 –14 –40 –13 Number Operations g1.indb 19 19 Breaking Down Numbers 07-11-2018 17:02:12
7 21 8 39 9 41 –11 –25 –31 10 8 5 11 7 9 12 6 7 –23 –26 –40 13 5 6 14 6 0 15 1 1 –32 –60 –10 16 3 5 17 6 6 18 1 5 –12 –53 –13 19 8 1 20 4 3 21 6 2 –10 –31 –41 22 9 5 23 7 9 24 6 2 –23 –37 –32 20 07-11-2018 17:02:13 Number Operations g1.indb 20
25 3 6 26 8 8 27 2 3 –16 –13 –13 28 1 9 29 8 1 30 9 5 –14 –20 –34 31 9 3 32 2 0 33 9 5 –42 –13 –51 34 7 0 35 5 7 36 7 2 –29 –30 –71 37 7 5 38 4 9 39 8 7 –31 –31 –66 40 6 9 41 4 0 42 2 1 –23 –30 –10 Number Operations g1.indb 21 21 Breaking Down Numbers 07-11-2018 17:02:14
counting by 0s and 1s Let us LEARN Complete the following. 1 21 – 1 = 19 48 – 0 = 2 25 – 1 = 20 9 + 1 = 3 87 – 1 = 21 24 – 0 = 4 96 – 1 = 22 91 – 0 = 5 68 – 0 = 23 65 + 0 = 6 73 – 0 = 24 2 + 1 = 7 83 + 0 = 25 21 + 0 = 8 59 – 0 = 26 47 + 0 = 9 54 + 0 = 27 93 – 0 = 10 16 – 0 = 28 82 – 1 = 11 24 + 1 = 29 86 + 0 = 12 45 + 1 = 30 53 – 1 = 13 66 + 1 = 31 93 – 1 = 14 9 – 0 = 32 63 + 1 = 15 58 – 1 = 33 22 – 1 = 16 3 + 0 = 34 24 + 1 = 17 23 – 1 = 35 86 + 1 = 18 62 + 0 = 36 74 + 0 = 22 Number Operations g1.indb 22 07-11-2018 17:02:18
Solve the following. 23 5 + 0 = 24 58 + = 59 1 46 – 1 = 25 15 + 0 = 2 48 + = 49 26 28 + 1 = 3 3–1= 27 45 – 0 = 4 – 1 = 46 28 85 + = 85 5 15 – = 15 29 7 + 0 = 6 +1=7 30 16 – = 16 7 86 + = 87 31 22 + = 22 8 96 – = 96 32 33 – 1 = 9 5+ =5 33 92 + 0 = 10 + 1 = 87 34 + 0 = 61 11 40 + = 41 35 96 + = 97 12 – 1 = 45 36 + 1 = 59 13 93 – 0 = 37 29 + 0 = 14 + 0 = 30 38 13 + 1 = 15 – 1 = 78 39 88 – = 88 16 86 + 0 = 40 3 + = 4 17 35 – 0 = 41 14 – 0 = 18 68 + 0 = 42 – 1 = 5 19 87 – = 86 43 + 1 = 28 20 68 – = 68 44 – 1 = 37 21 91 – = 91 22 41 – = 41 23 Number Operations g1.indb 23 Counting by 0s and 1s 07-11-2018 17:02:20
45 + 0 = 68 68 26 – = 26 46 – 0 = 10 69 41 + 0 = 47 39 – 0 = 70 – 0 = 75 48 75 + 1 = 71 88 + 1 = 49 + 0 = 65 72 + 1 = 21 50 – 1 = 25 73 – 1 = 61 51 – 0 = 31 74 31 + = 31 52 75 – = 74 75 – 1 = 76 53 32 + 0 = 76 + 1 = 32 54 37 + 0 = 77 70 – 1 = 55 43 + 1 = 78 + 1 = 56 56 – 1 = 41 79 – 1 = 13 57 + 0 = 2 80 75 + = 76 58 + 1 = 23 81 – 0 = 99 59 + 0 = 85 82 36 – 1 = 60 98 – 1 = 83 4 + 1 = 61 – 0 = 53 84 6 – 0 = 62 63 – = 63 85 + 1 = 82 63 82 – 1 = 86 66 – = 65 64 37 – 1 = 87 42 + = 42 65 24 – 0 = 88 85 – 1 = 66 + 0 = 96 89 47 + = 47 67 + 0 = 98 90 – 1 = 52 24 07-11-2018 17:02:22 Number Operations g1.indb 24
Write the number before and the number after the given number. 1 33 34 35 21 94 2 65 22 79 3 37 23 64 4 55 24 91 5 34 25 28 63 26 35 7 49 27 8 8 79 28 63 96 29 18 10 13 30 63 11 64 31 50 12 58 32 39 13 12 33 10 14 63 34 30 15 71 35 14 16 34 36 91 17 72 37 36 18 84 38 95 19 68 39 53 20 17 40 35 25 Counting by 0s and 1s Number Operations g1.indb 25 07-11-2018 17:02:24
Write the numbers before and the numbers after the given number. 1 27 28 29 30 31 2 78 3 31 4 55 5 71 6 53 7 66 8 25 9 23 10 36 11 84 12 8 13 3 14 60 15 19 16 57 17 51 18 58 19 67 20 82 21 13 22 97 26 Number Operations g1.indb 26 07-11-2018 17:02:25
23 9 24 68 25 5 26 73 27 45 28 70 29 96 30 82 31 28 32 37 33 29 34 87 35 25 36 41 37 88 38 64 39 12 40 74 41 61 42 46 43 63 44 6 45 20 Number Operations g1.indb 27 27 Counting by 0s and 1s 07-11-2018 17:02:26
Skip Counting Let us learn Practise skip counting by 2 and 3 Count the number of objects. 1 = 2 = 07-11-2018 17:02:29 28 Number Operations g1.indb 28
3 29 = Skip Counting 4 07-11-2018 17:02:35 = 5 = 6 = Number Operations g1.indb 29
7 07-11-2018 17:02:37 = 8 = 9 = 10 = 30 Number Operations g1.indb 30
11 31 = Skip Counting 12 07-11-2018 17:02:41 = Number Operations g1.indb 31
13 07-11-2018 17:02:48 = 14 = 15 = 32 Number Operations g1.indb 32
Show skip counting on the number line. 1 Skip count by 2: Start at 10 and skip count backwards 3 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2 Skip count by 2: Start at 17 and skip count forwards 4 times. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 3 Skip count by 3: Start at 8 and skip count backwards 2 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 4 Skip count by 3: Start at 29 and skip count backwards 7 times. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 33 Skip Counting Number Operations g1.indb 33 07-11-2018 17:02:49
5 Skip count by 2: Start at 7 and skip count forwards 6 times. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 6 Skip count by 3: Start at 13 and skip count forwards 8 times. 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 7 Skip count by 2: Start at 18 and skip count forwards 5 times. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 8 Skip count by 3: Start at 12 and skip count forwards 7 times. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 34 Number Operations g1.indb 34 07-11-2018 17:02:49
9 Skip count by 2: Start at 22 and skip count backwards 9 times. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 10 Skip count by 3: Start at 14 and skip count forwards 6 times. 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 11 Skip count by 2: Start at 7 and skip count forwards 2 times. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 12 Skip count by 3: Start at 31 and skip count backwards 9 times. 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 35 Skip Counting Number Operations g1.indb 35 07-11-2018 17:02:50
13 Skip count by 3: Start at 1 and skip count forwards 5 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 14 Skip count by 3: Start at 17 and skip count forwards 7 times. 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 15 Skip count by 2: Start at 7 and skip count forwards 6 times. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 16 Skip count by 2: Start at 21 and skip count backwards 8 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 36 Number Operations g1.indb 36 07-11-2018 17:02:50
17 Skip count by 2: Start at 16 and skip count backwards 5 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 18 Skip count by 3: Start at 2 and skip count forwards 7 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 19 Skip count by 3: Start at 9 and skip count forwards 2 times. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 20 Skip count by 2: Start at 15 and skip count backwards 3 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 37 Skip Counting Number Operations g1.indb 37 07-11-2018 17:02:50
21 Skip count by 2: Start at 2 and skip count forwards 3 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 22 Skip count by 3: Start at 23 and skip count backwards 4 times. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 23 Skip count by 2: Start at 20 and skip count backwards 2 times. 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 24 Skip count by 2: Start at 18 and skip count forwards 5 times. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 38 Number Operations g1.indb 38 07-11-2018 17:02:51
Complete the series. 1 108, ___ , 104, 102, ___ , ___ , 96, 94, 92, 90, 88 2 120, ___ , ___ , ___ ,108, 105, ___ , 99, 96, 93, 90 3 71, 69, 67, 65, 63, 61, ___ , ___ , 55, 53, 51 4 66, 63, ___ , ___ , ___ , 51, ___ , 45, 42, 39, 36 5 84, ___ , ___ , ___ , 72, ___ , 66, 63, 60, 57, 54 6 61, ___ , 57, 55, ___ , 51, ___ , ___ , 45, 43, 41 7 6, ___ , ___ , 15, 18, ___ , 24, ___ , 30, 33, 36 8 9, 11, ___ , 15, ___ , 19, ___ , 23, 25, 27, 29 9 14, 16, ___ , ___ , ___ , 24, 26, 28, 30, ___ , 34 10 4, ___ , ___ , 10, ___ , 14, 16, ___ , 20, 22, 24 11 17, ___ , 21, 23, 25, ___ , 29, 31, 33, ___ , 37 12 25, ___ , ___ , 31, ___ , ___ , 37, 39, 41, 43, 45 13 69, ___ , ___ , ___ , ___ , 54, 51, 48, 45, 42, 39 14 10, 13, ___ , ___ , ___ , 25, 28, 31, ___ , 37, 40 15 60, 58, 56, ___ , ___ , 50, ___ , 46, ___ , 42, 40 16 26, 29, 32, 35, ___ , 41, ___ , ___ , ___ , 53, 56 17 99, 97, 95, 93, ___ , 89, ___ , ___ , 83, 81, 79 18 79, 76, 73, ___ , ___ , 64, ___ , 58, ___ , 52, 49 19 109, 107, 105, 103, ___ , 99, 97, ___ , 93, 91, 89 20 88, ___ , ___ , ___ , 80, 78, ___ , 74, 72, 70, 68 21 21, 24, ___ , ___ , 33, 36, ___ , 42, 45, ___ , 51 22 20, 23, ___ , 29, ___ , 35, 38, 41, ___ , 47, 50 39 Skip Counting Number Operations g1.indb 39 07-11-2018 17:02:52
multiplication tables Let us LEARN Practise table of 1 Complete the table. 1 1×1= = ___ 2 1×2= = ___ 3 1×3= = ___ 4 1×4= = ___ 5 1×5= = ___ 40 07-11-2018 17:02:54 Number Operations g1.indb 40
6 1×6= = ___ 7 1×7= 8 1×8= = ___ 9 1×9= = ___ 10 1 × 10 = = ___ = ___ Number Operations g1.indb 41 41 Multiplication Tables 07-11-2018 17:02:55
Complete the table. Fill in the blanks. 1 1×1= 1 =6×1 2 1×2= 2 =7×1 3 1×3= 3 ×1=9 4 1×4= 4 1×1= 5 1×5= 5 10 × 1 = 6 1×6= 6 2×1= 7 1×7= 7 ×1=4 8 1×8= 8 ×1=3 9 1×9= 9 8=8× 10 1 × 10 = 10 5 = 5 × 42 07-11-2018 17:02:57 Number Operations g1.indb 42
Practise table of 2 = ___ Complete the table. = ___ 1 2×1= = ___ 2 2×2= 3 2×3= = ___ 4 2×4= 5 2×5= = ___ Number Operations g1.indb 43 43 Multiplication Tables 07-11-2018 17:02:57
6 2×6= = ___ 7 2×7= = ___ 8 2×8= = ___ 9 2×9= = ___ 10 2 × 10 = = ___ 44 07-11-2018 17:02:58 Number Operations g1.indb 44
Complete the table. Fill in the blanks. 1 2×1= 1 7×2= 2 2×2= 2 ×2=4 3 2×3= 3 =4×2 4 2×4= 4 3×2= 5 2×5= 5 2=1× 6 2×6= 6 =6×2 7 2×7= 7 20 = 10 × 8 2×8= 8 =8×2 9 2×9= 9 × 2 = 18 10 2 × 10 = 10 5 × 2 = 45 Multiplication Tables Number Operations g1.indb 45 07-11-2018 17:03:00
Practise table of 3 = ___ Complete the table. = ___ = ___ 1 3×1= = ___ 2 3×2= = ___ 3 3×3= 4 3×4= 07-11-2018 17:03:00 5 3×5= 46 Number Operations g1.indb 46
6 3×6= = ___ 7 3×7= 8 3×8= = ___ 9 3×9= = ___ 10 3 × 10 = = ___ = ___ Number Operations g1.indb 47 47 Multiplication Tables 07-11-2018 17:03:00
Complete the table. Fill in the blanks. 1 3×1= 1 3×3= 2 3×2= 2 =4×3 3 3×3= 3 ×3=3 4 3×4= 4 24 = 8 × 5 3×5= 5 =2×3 6 3×6= 6 × 3 = 15 7 3×7= 7 = 10 × 3 8 3×8= 8 =9×3 9 3×9= 9 × 3 = 21 10 3 × 10 = 10 6 × 3 = 48 07-11-2018 17:03:01 Number Operations g1.indb 48
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