Multiplication worksheet for practicing multiplying by 10.

Let's solve the multiplication problems in the worksheet titled "Multiplying by 10 (A)".

The goal is to calculate each product. Most of these involve multiplying numbers by 10, but a few are exceptions (like $10 \times 9$, $10 \times 4$, etc.).

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🔢 Rule to Remember:

When you multiply any number by 10, you add a zero at the end of that number.

For example:
- $5 \times 10 = 50$
- $6 \times 10 = 60$
- $10 \times 10 = 100$

But if it's not multiplying by 10 (e.g., $10 \times 9$), then we just do regular multiplication.

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Now, let’s go through each problem:

#### Row 1:
1. $10 \times 10 = 100$
2. $4 \times 10 = 40$
3. $6 \times 10 = 60$
4. $8 \times 10 = 80$
5. $2 \times 10 = 20$
6. $1 \times 10 = 10$

#### Row 2:
7. $5 \times 10 = 50$
8. $3 \times 10 = 30$
9. $7 \times 10 = 70$
10. $9 \times 10 = 90$
11. $10 \times 9 = 90$
12. $10 \times 4 = 40$

#### Row 3:
13. $10 \times 7 = 70$
14. $10 \times 8 = 80$
15. $10 \times 1 = 10$
16. $10 \times 2 = 20$
17. $10 \times 3 = 30$
18. $10 \times 5 = 50$

#### Row 4:
19. $10 \times 6 = 60$
20. $10 \times 10 = 100$
21. $10 \times 1 = 10$
22. $6 \times 10 = 60$
23. $2 \times 10 = 20$
24. $3 \times 10 = 30$

#### Row 5:
25. $10 \times 10 = 100$
26. $10 \times 8 = 80$
27. $10 \times 4 = 40$
28. $10 \times 5 = 50$
29. $10 \times 7 = 70$
30. $10 \times 9 = 90$

#### Row 6:
31. $10 \times 8 = 80$
32. $6 \times 10 = 60$
33. $10 \times 10 = 100$
34. $10 \times 2 = 20$
35. $10 \times 7 = 70$
36. $5 \times 10 = 50$

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✔ Final Answers (in order):

```
100, 40, 60, 80, 20, 10,
50, 30, 70, 90, 90, 40,
70, 80, 10, 20, 30, 50,
60, 100, 10, 60, 20, 30,
100, 80, 40, 50, 70, 90,
80, 60, 100, 20, 70, 50
```

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📝 Explanation:

- Multiplying by 10: Just add a zero to the number.
- For problems like $10 \times 9$: Think of it as $10 \times 9 = 90$ — same idea.
- The only non-standard ones are where the multiplier is not 10 (but still easy to compute).

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✔ Score:

There are 36 problems, and all answers are correct if computed properly.

So, Score: 36/36

Let me know if you'd like this formatted as a printable answer key!