Explanation:
Let’s solve each subtraction problem one by one. Remember: subtract the smaller number from the bigger number.
a) 10 − 8 = ?
Start at 10, count back 8: 10 → 9 → 8 → 7 → 6 → 5 → 4 → 3 → 2. Wait — that’s too many! Better: 10 − 8 = 2.
✔
b) 14 − 7 = ?
14 minus 7: think of it as splitting 14 into 7 and 7 → so 14 − 7 = 7.
✔
c) 20 − 5 = ?
20 take away 5 is 15.
✔
d) 13 − 8 = ?
13 − 8: you can think 8 + ? = 13 → 8 + 5 = 13, so answer is 5.
✔
e) 19 − 9 = ?
19 − 9 = 10. (Because 9 + 10 = 19)
✔
f) 17 − 3 = ?
17 − 3 = 14.
✔
g) 15 − 6 = ?
15 − 6: 6 + 9 = 15, so answer is 9.
✔
h) 20 − 9 = ?
20 − 9 = 11. (Because 9 + 11 = 20)
✔
i) 17 − 4 = ?
17 − 4 = 13.
✔
j) 15 − 7 = ?
15 − 7: 7 + 8 = 15, so answer is 8.
✔
Now let’s double-check each against the answer choices on the right (though the student is supposed to fill in the blank — the right column seems to be distractors or maybe a matching activity, but we just need correct values):
a) 10 − 8 =
2
b) 14 − 7 =
7
c) 20 − 5 =
15
d) 13 − 8 =
5
e) 19 − 9 =
10
f) 17 − 3 =
14
g) 15 − 6 =
9
h) 20 − 9 =
11
i) 17 − 4 =
13
j) 15 − 7 =
8
All match standard subtraction facts.
Final Answer:
a) 2
b) 7
c) 15
d) 5
e) 10
f) 14
g) 9
h) 11
i) 13
j) 8
Parent Tip: Review the logic above to help your child master the concept of subtraction to 20 worksheet.
