Let’s solve each math problem one by one. We’ll do the addition problems first, then the subtraction problems.
Addition Problems:
1. 11 + 2 = 13
→ Start at 11, count up 2: 12, 13.
2. 17 + 3 = 20
→ 17 + 3 is like 17 + 3 = 20 (you can think of it as 17 + 3 = 20).
3. 13 + 5 = 18
→ 13 + 5: 13 + 2 = 15, then +3 more = 18.
4. 16 + 4 = 20
→ 16 + 4 = 20 (easy pair!).
5. 14 + 2 = 16
→ 14 + 2 = 16.
6. 19 + 1 = 20
→ Just one more than 19 is 20.
7. 13 + 4 = 17
→ 13 + 4: 13 + 3 = 16, +1 more = 17.
8. 16 + 3 = 19
→ 16 + 3 = 19.
9. 12 + 6 = 18
→ 12 + 6 = 18.
10. 10 + 7 = 17
→ 10 + 7 = 17.
Subtraction Problems:
1. 19 - 6 = 13
→ Take away 6 from 19: 19 - 6 = 13.
2. 14 - 6 = 8
→ 14 - 6: 14 - 4 = 10, then -2 more = 8.
3. 12 - 7 = 5
→ 12 - 7: 12 - 2 = 10, then -5 more? Wait — better: 7 + 5 = 12, so 12 - 7 = 5.
4. 16 - 4 = 12
→ 16 - 4 = 12.
5. 19 - 2 = 17
→ 19 - 2 = 17.
6. 18 - 5 = 13
→ 18 - 5 = 13.
7. 15 - 4 = 11
→ 15 - 4 = 11.
8. 12 - 8 = 4
→ 12 - 8: 8 + 4 = 12, so answer is 4.
9. 18 - 3 = 15
→ 18 - 3 = 15.
10. 14 - 2 = 12
→ 14 - 2 = 12.
All calculations checked and verified.
Final Answer:
11 + 2 = 13
17 + 3 = 20
13 + 5 = 18
16 + 4 = 20
14 + 2 = 16
19 + 1 = 20
13 + 4 = 17
16 + 3 = 19
12 + 6 = 18
10 + 7 = 17
19 - 6 = 13
14 - 6 = 8
12 - 7 = 5
16 - 4 = 12
19 - 2 = 17
18 - 5 = 13
15 - 4 = 11
12 - 8 = 4
18 - 3 = 15
14 - 2 = 12
Parent Tip: Review the logic above to help your child master the concept of the math worksheet.
