Problem: Integer Multiplication Worksheet
The task is to solve the integer multiplication problems provided in the worksheet. Here are the steps and solutions for each problem:
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Rules for Integer Multiplication:
1.
Positive × Positive = Positive
2.
Negative × Negative = Positive
3.
Positive × Negative = Negative
4.
Negative × Positive = Negative
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Solutions:
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Problems 1–10:
1. \( 4 \cdot -5 = -20 \)
- Positive × Negative = Negative
2. \( -6 \cdot -9 = 54 \)
- Negative × Negative = Positive
3. \( -3 \cdot 6 = -18 \)
- Negative × Positive = Negative
4. \( 7 \cdot 2 = 14 \)
- Positive × Positive = Positive
5. \( -9 \cdot -3 = 27 \)
- Negative × Negative = Positive
6. \( -4 \cdot 8 = -32 \)
- Negative × Positive = Negative
7. \( 9 \cdot -4 = -36 \)
- Positive × Negative = Negative
8. \( -5 \cdot -6 = 30 \)
- Negative × Negative = Positive
9. \( -1 \cdot 8 = -8 \)
- Negative × Positive = Negative
10. \( 2 \cdot -9 = -18 \)
- Positive × Negative = Negative
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Problems 11–20:
11. \( -1 \cdot 6 = -6 \)
- Negative × Positive = Negative
12. \( -5 \cdot -9 = 45 \)
- Negative × Negative = Positive
13. \( 3 \cdot 7 = 21 \)
- Positive × Positive = Positive
14. \( 6 \cdot -8 = -48 \)
- Positive × Negative = Negative
15. \( -2 \cdot 5 = -10 \)
- Negative × Positive = Negative
16. \( -6 \cdot -4 = 24 \)
- Negative × Negative = Positive
17. \( 10 \cdot -3 = -30 \)
- Positive × Negative = Negative
18. \( -2 \cdot -8 = 16 \)
- Negative × Negative = Positive
19. \( -8 \cdot 3 = -24 \)
- Negative × Positive = Negative
20. \( 1 \cdot -11 = -11 \)
- Positive × Negative = Negative
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Final Answers:
1. \( -20 \)
2. \( 54 \)
3. \( -18 \)
4. \( 14 \)
5. \( 27 \)
6. \( -32 \)
7. \( -36 \)
8. \( 30 \)
9. \( -8 \)
10. \( -18 \)
11. \( -6 \)
12. \( 45 \)
13. \( 21 \)
14. \( -48 \)
15. \( -10 \)
16. \( 24 \)
17. \( -30 \)
18. \( 16 \)
19. \( -24 \)
20. \( -11 \)
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Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & -20 \\
2. & 54 \\
3. & -18 \\
4. & 14 \\
5. & 27 \\
6. & -32 \\
7. & -36 \\
8. & 30 \\
9. & -8 \\
10. & -18 \\
11. & -6 \\
12. & 45 \\
13. & 21 \\
14. & -48 \\
15. & -10 \\
16. & 24 \\
17. & -30 \\
18. & 16 \\
19. & -24 \\
20. & -11 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of multiply integers worksheet.
