Name: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Y3
Homework Sheet 14: Understanding Addition
Example 37
52
The missing number is 15, because 52
37
15.
Write in the missing number.
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1 The sum of 55 and 23 is . . . . . . . .
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2 300 add 83 equals . . . . . . . .
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3 45 and 19 altogether is . . . . . . . .
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4 The total of 800 and 700 is . . . . . . . .
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5 38 plus 90 equals . . . . . . . .
Write in the missing number.
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6 Add
to 36 to make 89.
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7
and 20 altogether is 106.
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8 The total of
and 42 is 100.
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9
plus 21 is 83.
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10 The sum of 48 and
is 75.
Write in the missing number.
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11 35
62
16
6
71
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12
7
403
17
15
83
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13 76
100
18
21
94
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14
29
77
19 80
126
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15 90
170
20 239
439