Problem Overview:
The task involves solving addition and subtraction problems within 10, as well as completing a challenge section using specific numbers. Below is a detailed explanation of the solution.
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Part 1: Addition and Subtraction Problems
The worksheet contains 24 basic arithmetic problems involving addition and subtraction within 10. Each problem is already solved, so we will verify the correctness of each solution.
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Solutions:
1. \( 3 + 2 = 5 \)
2. \( 6 + 4 = 10 \)
3. \( 2 + 3 = 5 \)
4. \( 4 + 2 = 6 \)
5. \( 8 + 1 = 9 \)
6. \( 3 + 4 = 7 \)
7. \( 8 - 1 = 7 \)
8. \( 4 - 3 = 1 \)
9. \( 6 - 4 = 2 \)
10. \( 8 - 1 = 7 \)
11. \( 5 - 3 = 2 \)
12. \( 6 - 2 = 4 \)
13. \( 6 + 1 = 7 \)
14. \( 4 - 4 = 0 \)
15. \( 2 + 5 = 7 \)
16. \( 8 - 3 = 5 \)
17. \( 5 + 5 = 10 \)
18. \( 7 - 4 = 3 \)
19. \( 5 + 4 = 9 \)
20. \( 6 - 1 = 5 \)
21. \( 7 - 2 = 5 \)
22. \( 6 - 5 = 1 \)
23. \( 7 - 3 = 4 \)
24. \( 10 - 6 = 4 \)
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Verification:
Each equation is correct based on basic arithmetic rules. For example:
- \( 3 + 2 = 5 \): Adding 3 and 2 gives 5.
- \( 8 - 1 = 7 \): Subtracting 1 from 8 gives 7.
- \( 5 + 5 = 10 \): Adding 5 and 5 gives 10.
- \( 10 - 6 = 4 \): Subtracting 6 from 10 gives 4.
All solutions are verified to be correct.
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Part 2: Challenge Section
The challenge section asks to choose any 3 numbers from the set \(\{7, 10, 3, 8, 4\}\) to complete each of the given equations. The equations are:
1. \( 7 + 3 = 10 \)
2. \( 4 + 3 = 7 \)
3. \( 10 - 3 = 7 \)
4. \( 7 - 4 = 3 \)
5. \( 3 + 7 = 10 \)
6. \( 3 + 4 = 7 \)
7. \( 10 - 7 = 3 \)
8. \( 7 - 3 = 4 \)
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Solution Approach:
We need to ensure that the chosen numbers (7, 10, 3, 8, 4) can satisfy all the equations. Let's analyze each equation:
1. \( 7 + 3 = 10 \): Uses 7, 3, and 10.
2. \( 4 + 3 = 7 \): Uses 4, 3, and 7.
3. \( 10 - 3 = 7 \): Uses 10, 3, and 7.
4. \( 7 - 4 = 3 \): Uses 7, 4, and 3.
5. \( 3 + 7 = 10 \): Uses 3, 7, and 10.
6. \( 3 + 4 = 7 \): Uses 3, 4, and 7.
7. \( 10 - 7 = 3 \): Uses 10, 7, and 3.
8. \( 7 - 3 = 4 \): Uses 7, 3, and 4.
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Observation:
All the equations can be satisfied using the numbers 7, 10, 3, and 4. The number 8 is not needed for any of the equations.
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Final Answer for the Challenge:
The numbers used are \( 7, 10, 3, \) and \( 4 \). The number 8 is not required.
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Final Answer:
\[
\boxed{7, 10, 3, 4}
\]
Parent Tip: Review the logic above to help your child master the concept of addition and subtraction worksheet for first grade pdf.
