Let’s solve each problem one by one. We’re looking for the missing number (addend) that makes each equation true.
We can think of it like this:
If we have “A + ? = B”, then the missing number is “B - A”.
Let’s go row by row:
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Row 1:
- 9 + ___ = 15 → 15 - 9 =
6
- ___ + 8 = 14 → 14 - 8 =
6
Row 2:
- ___ + 5 = 13 → 13 - 5 =
8
- 5 + ___ = 13 → 13 - 5 =
8
Row 3:
- 8 + ___ = 16 → 16 - 8 =
8
- ___ + 3 = 12 → 12 - 3 =
9
Row 4:
- ___ + 7 = 14 → 14 - 7 =
7
- 7 + ___ = 15 → 15 - 7 =
8
Row 5:
- 3 + ___ = 10 → 10 - 3 =
7
- ___ + 6 = 14 → 14 - 6 =
8
Row 6:
- ___ + 2 = 11 → 11 - 2 =
9
- 5 + ___ = 16 → 16 - 5 =
11
Row 7:
- 9 + ___ = 18 → 18 - 9 =
9
- ___ + 2 = 10 → 10 - 2 =
8
Row 8:
- ___ + 6 = 13 → 13 - 6 =
7
- 6 + ___ = 13 → 13 - 6 =
7
Row 9:
- 5 + ___ = 12 → 12 - 5 =
7
- ___ + 8 = 17 → 17 - 8 =
9
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Now let’s write all the answers in order, left to right, top to bottom:
6, 6
8, 8
8, 9
7, 8
7, 8
9, 11
9, 8
7, 7
7, 9
Final Answer:
6, 6, 8, 8, 8, 9, 7, 8, 7, 8, 9, 11, 9, 8, 7, 7, 7, 9
Parent Tip: Review the logic above to help your child master the concept of printable math worksheets second grade.
