Let's solve each section of the
Number Bonds worksheet step by step.
---
🔷 1. Complete the number pairs to make 12
We need to find missing numbers such that each pair adds up to
12.
-
8 + 4 = 12 → Already given
✔
-
10 + ? = 12 → ? = 12 - 10 =
2
-
5 + ? = 12 → ? = 12 - 5 =
7
-
? + 6 = 12 → ? = 12 - 6 =
6
-
? + 7 = 12 → ? = 12 - 7 =
5
-
? + 3 = 12 → ? = 12 - 3 =
9
✔ Final answers:
- 10 +
2
- 5 +
7
-
6 + 6
-
5 + 7
-
9 + 3
---
🔷 2. Complete the number pairs to make 19
Each pair must add to
19.
-
? + 6 = 19 → ? = 19 - 6 =
13
-
11 + ? = 19 → ? = 19 - 11 =
8
-
8 + ? = 19 → ? = 19 - 8 =
11
-
? + 5 = 19 → ? = 19 - 5 =
14
-
? + 4 = 19 → ? = 19 - 4 =
15
-
? + 7 = 19 → ? = 19 - 7 =
12
✔ Final answers:
-
13 + 6
- 11 +
8
- 8 +
11
-
14 + 5
-
15 + 4
-
12 + 7
---
🔷 3. Complete the number pairs to make 47
Each pair adds to
47.
-
24 + ? = 47 → ? = 47 - 24 =
23
-
? + 34 = 47 → ? = 47 - 34 =
13
-
? + 12 = 47 → ? = 47 - 12 =
35
-
19 + ? = 47 → ? = 47 - 19 =
28
-
31 + ? = 47 → ? = 47 - 31 =
16
-
27 + ? = 47 → ? = 47 - 27 =
20
✔ Final answers:
- 24 +
23
-
13 + 34
-
35 + 12
- 19 +
28
- 31 +
16
- 27 +
20
---
🔷 4. Complete the number pairs to make 29
Each pair adds to
29.
-
? + 6 = 29 → ? = 29 - 6 =
23
-
24 + ? = 29 → ? = 29 - 24 =
5
-
7 + ? = 29 → ? = 29 - 7 =
22
-
? + 13 = 29 → ? = 29 - 13 =
16
-
? + 9 = 29 → ? = 29 - 9 =
20
-
? + 19 = 29 → ? = 29 - 19 =
10
✔ Final answers:
-
23 + 6
- 24 +
5
- 7 +
22
-
16 + 13
-
20 + 9
-
10 + 19
---
✔ Summary of All Answers:
#### Make 12:
- 10 +
2
- 5 +
7
-
6 + 6
-
5 + 7
-
9 + 3
#### Make 19:
-
13 + 6
- 11 +
8
- 8 +
11
-
14 + 5
-
15 + 4
-
12 + 7
#### Make 47:
- 24 +
23
-
13 + 34
-
35 + 12
- 19 +
28
- 31 +
16
- 27 +
20
#### Make 29:
-
23 + 6
- 24 +
5
- 7 +
22
-
16 + 13
-
20 + 9
-
10 + 19
---
📌 Explanation:
Number bonds are pairs of numbers that add up to a target number. To find the missing number, you subtract the known number from the total (target).
For example:
If the total is 12 and one number is 10, then the missing number is:
👉 12 - 10 = 2
This concept helps build mental math and understanding of addition and subtraction relationships.
Let me know if you'd like this as a printable answer key! 😊
Parent Tip: Review the logic above to help your child master the concept of number bond worksheet 2nd grade.
