Let's solve each of the "Find the Missing Numbers" problems step by step. These are
number bond or
part-whole diagrams, where the top number is the total (sum), and the two bottom numbers are parts that add up to the total.
We'll go through each one:
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1. First Diagram (Orange)
- Top: 22
- Bottom right: 7
- Bottom left: ?
- Calculation: $ 22 - 7 = ? $
Calculation:
$ 22 - 7 = 15 $
✔ So, the missing number is
15
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2. Second Diagram (Blue)
- Top: 15
- Bottom right: 8
- Bottom left: ?
- Calculation: $ 15 - 8 = ? $
Calculation:
$ 15 - 8 = 7 $
✔ So, the missing number is
7
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3. Third Diagram (Red)
- Bottom left: 9
- Bottom right: 16
- Top: ?
- Calculation: $ 9 + 16 = ? $
Calculation:
$ 9 + 16 = 25 $
✔ So, the missing number is
25
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4. Fourth Diagram (Orange)
- Top: 29
- Bottom right: 17
- Bottom left: ?
- Calculation: $ 29 - 17 = ? $
Calculation:
$ 29 - 17 = 12 $
✔ So, the missing number is
12
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5. Fifth Diagram (Blue)
- Bottom left: 19
- Bottom right: 7
- Top: ?
- Calculation: $ 19 + 7 = ? $
Calculation:
$ 19 + 7 = 26 $
✔ So, the missing number is
26
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6. Sixth Diagram (Red)
- Top: 31
- Bottom left: 6
- Bottom right: ?
- Calculation: $ 31 - 6 = ? $
Calculation:
$ 31 - 6 = 25 $
✔ So, the missing number is
25
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✔ Final Answers:
| Diagram | Missing Number | Calculation Used |
|--------|----------------|------------------|
| 1 | 15 | $ 22 - 7 = 15 $ |
| 2 | 7 | $ 15 - 8 = 7 $ |
| 3 | 25 | $ 9 + 16 = 25 $ |
| 4 | 12 | $ 29 - 17 = 12 $ |
| 5 | 26 | $ 19 + 7 = 26 $ |
| 6 | 25 | $ 31 - 6 = 25 $ |
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📝 Summary:
These diagrams follow the rule:
>
Top number = sum of bottom two numbers
So, if you know the total and one part, subtract to find the other.
If you know both parts, add them to find the total.
All calculations have been filled in correctly!
Let me know if you'd like this as a printable answer sheet!
Parent Tip: Review the logic above to help your child master the concept of find the missing number worksheet.
