Let’s solve each problem step by step. The goal is to make one side of the equation have a multiple of 10 (like 10, 20, 30, etc.) by adjusting both sides equally — meaning if you add or subtract something on one side, you do the same on the other so the equality stays true.
We’ll go row by row.
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First Row:
1.
14 - 8 = 16 - ___
Left side: 14 - 8 = 6
So right side must also equal 6 → 16 - ? = 6 → ? = 10
✔ Answer:
10
2.
17 - 9 = ___ - 10
Left side: 17 - 9 = 8
So right side: ? - 10 = 8 → ? = 18
✔ Answer:
18
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Second Row:
3.
63 - 9 = 64 - ___
Left: 63 - 9 = 54
Right: 64 - ? = 54 → ? = 10
✔ Answer:
10
4.
43 - 7 = ___ - 10
Left: 43 - 7 = 36
Right: ? - 10 = 36 → ? = 46
✔ Answer:
46
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Third Row:
5.
38 - 6 = 42 - ___
Left: 38 - 6 = 32
Right: 42 - ? = 32 → ? = 10
✔ Answer:
10
6.
79 - 8 = ___ - 10
Left: 79 - 8 = 71
Right: ? - 10 = 71 → ? = 81
✔ Answer:
81
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Fourth Row:
7.
47 - 12 = ___ - 10
Left: 47 - 12 = 35
Right: ? - 10 = 35 → ? = 45
✔ Answer:
45
8.
66 - 23 = 63 - ___
Left: 66 - 23 = 43
Right: 63 - ? = 43 → ? = 20
✔ Answer:
20
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Fifth Row:
9.
84 - 13 = 81 - ___
Left: 84 - 13 = 71
Right: 81 - ? = 71 → ? = 10
✔ Answer:
10
10.
92 - 54 = ___ - 50
Left: 92 - 54 = 38
Right: ? - 50 = 38 → ? = 88
✔ Answer:
88
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Sixth Row:
11.
65 - 31 = ___ - 30
Left: 65 - 31 = 34
Right: ? - 30 = 34 → ? = 64
✔ Answer:
64
12.
51 - 22 = 49 - ___
Left: 51 - 22 = 29
Right: 49 - ? = 29 → ? = 20
✔ Answer:
20
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Seventh Row:
13.
34 - 17 = 37 - ___
Left: 34 - 17 = 17
Right: 37 - ? = 17 → ? = 20
✔ Answer:
20
14.
81 - 46 = ___ - 50
Left: 81 - 46 = 35
Right: ? - 50 = 35 → ? = 85
✔ Answer:
85
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Eighth Row:
15.
75 - 39 = ___ - 40
Left: 75 - 39 = 36
Right: ? - 40 = 36 → ? = 76
✔ Answer:
76
16.
73 - 18 = 75 - ___
Left: 73 - 18 = 55
Right: 75 - ? = 55 → ? = 20
✔ Answer:
20
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Ninth Row:
17.
49 - 28 = 51 - ___
Left: 49 - 28 = 21
Right: 51 - ? = 21 → ? = 30
✔ Answer:
30
18.
68 - 26 = ___ - 30
Left: 68 - 26 = 42
Right: ? - 30 = 42 → ? = 72
✔ Answer:
72
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All answers checked and verified.
Final Answer:
10, 18, 10, 46, 10, 81, 45, 20, 10, 88, 64, 20, 20, 85, 76, 20, 30, 72
Parent Tip: Review the logic above to help your child master the concept of simplify worksheet.
