Let's solve the
Number Bonds worksheet step by step.
In a number bond, the
total (the large circle) is the sum of the two smaller numbers connected to it. So:
>
Total = Part 1 + Part 2
We need to
fill in the missing number in each bond. We'll go through each one.
---
Row 1
1.
16 with
8 and a blank
→ 16 - 8 =
8
✔ Missing number:
8
2.
14 with
12 and a blank
→ 14 - 12 =
2
✔ Missing number:
2
3. Blank with
8 and
12
→ 8 + 12 =
20
✔ Missing number:
20
---
Row 2
4. Blank with
15 and
5
→ 15 + 5 =
20
✔ Missing number:
20
5. Blank with
10 and
10
→ 10 + 10 =
20
✔ Missing number:
20
6.
13 with
8 and a blank
→ 13 - 8 =
5
✔ Missing number:
5
---
Row 3
7.
15 with
7 and a blank
→ 15 - 7 =
8
✔ Missing number:
8
8. Blank with
15 and
3
→ 15 + 3 =
18
✔ Missing number:
18
9.
16 with
11 and a blank
→ 16 - 11 =
5
✔ Missing number:
5
---
Row 4
10.
18 with
10 and a blank
→ 18 - 10 =
8
✔ Missing number:
8
11.
12 with
6 and a blank
→ 12 - 6 =
6
✔ Missing number:
6
12. Blank with
14 and
6
→ 14 + 6 =
20
✔ Missing number:
20
---
✔ Final Answers (in order):
1. 8
2. 2
3. 20
4. 20
5. 20
6. 5
7. 8
8. 18
9. 5
10. 8
11. 6
12. 20
---
📝 Summary:
All number bonds follow the rule:
Whole = Part + Part, so if one part is missing, subtract the known part from the whole.
You can now fill in the blanks on the worksheet accordingly!
Parent Tip: Review the logic above to help your child master the concept of decomposing numbers to 20 worksheet.
