Let’s solve each subtraction problem one by one. We’ll go step by step, and I’ll make sure each answer is correct before writing it down.
We’re subtracting numbers from 0 to 20 — all answers will be positive or zero (since we’re not going below 0 here).
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Left Column:
1) 13 - 8 =
Think: 8 + ? = 13 → 5
✔ Answer:
5
2) 12 - 6 =
Half of 12 is 6 → so 12 - 6 = 6
✔ Answer:
6
3) 10 - 7 =
Count up from 7 to 10: 8, 9, 10 → that’s 3 steps
✔ Answer:
3
4) 15 - 4 =
Take away 4 from 15: 15 → 14 → 13 → 12 → 11
✔ Answer:
11
5) 17 - 3 =
17 minus 3 is easy: 14
✔ Answer:
14
6) 9 - 7 =
9 minus 7 leaves 2
✔ Answer:
2
7) 13 - 11 =
13 minus 11 is 2
✔ Answer:
2
8) 15 - 5 =
15 minus 5 is 10
✔ Answer:
10
9) 10 - 6 =
10 minus 6 is 4
✔ Answer:
4
10) 12 - 10 =
12 minus 10 is 2
✔ Answer:
2
11) 11 - 9 =
11 minus 9 is 2
✔ Answer:
2
12) 15 - 3 =
15 minus 3 is 12
✔ Answer:
12
13) 13 - 3 =
13 minus 3 is 10
✔ Answer:
10
14) 11 - 5 =
11 minus 5 is 6
✔ Answer:
6
15) 14 - 2 =
14 minus 2 is 12
✔ Answer:
12
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Right Column:
16) 14 - 8 =
8 + 6 = 14 → so 14 - 8 = 6
✔ Answer:
6
17) 16 - 10 =
16 minus 10 is 6
✔ Answer:
6
18) 15 - 6 =
15 minus 6: think 6 + 9 = 15 → so 9
✔ Answer:
9
19) 19 - 4 =
19 minus 4 is 15
✔ Answer:
15
20) 17 - 6 =
17 minus 6 is 11
✔ Answer:
11
21) 13 - 10 =
13 minus 10 is 3
✔ Answer:
3
22) 20 - 8 =
20 minus 8: 8 + 12 = 20 → so 12
✔ Answer:
12
23) 19 - 7 =
19 minus 7 is 12
✔ Answer:
12
24) 16 - 14 =
16 minus 14 is 2
✔ Answer:
2
25) 18 - 15 =
18 minus 15 is 3
✔ Answer:
3
26) 20 - 10 =
20 minus 10 is 10
✔ Answer:
10
27) 15 - 7 =
15 minus 7: 7 + 8 = 15 → so 8
✔ Answer:
8
28) 13 - 5 =
13 minus 5 is 8
✔ Answer:
8
29) 19 - 8 =
19 minus 8 is 11
✔ Answer:
11
30) 20 - 13 =
20 minus 13: 13 + 7 = 20 → so 7
✔ Answer:
7
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All problems solved and double-checked!
Final Answer:
1) 5
2) 6
3) 3
4) 11
5) 14
6) 2
7) 2
8) 10
9) 4
10) 2
11) 2
12) 12
13) 10
14) 6
15) 12
16) 6
17) 6
18) 9
19) 15
20) 11
21) 3
22) 12
23) 12
24) 2
25) 3
26) 10
27) 8
28) 8
29) 11
30) 7
Parent Tip: Review the logic above to help your child master the concept of math worksheet grade 7.
