Multiply 3-digit multiples of 10 with 1-digit numbers - a math worksheet for practice and learning.

Absolutely! Let’s solve this worksheet step by step.

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## 📌 Task: Multiply 3-Digit Multiples of 10 with 1-Digit Numbers

All the numbers in the left column (like 520, 130, 320, etc.) are multiples of 10 — they all end in zero. This makes multiplication easier!

💡 Strategy:

When multiplying a multiple of 10 (like 520) by a 1-digit number (like 5), you can:

1. Ignore the zero for now → multiply the first two digits by the 1-digit number.
2. Add back the zero at the end.

> Example:
> 520 × 5 → Think: 52 × 5 = 260 → Then add the zero → 2600

Let’s solve each problem using this method.

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## ✔ SOLUTIONS

Row 1:

1. 520 × 5
→ 52 × 5 = 260 → Add zero → 2600

2. 130 × 4
→ 13 × 4 = 52 → Add zero → 520

3. 320 × 3
→ 32 × 3 = 96 → Add zero → 960

4. 420 × 2
→ 42 × 2 = 84 → Add zero → 840

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Row 2:

5. 230 × 8
→ 23 × 8 = 184 → Add zero → 1840

6. 180 × 6
→ 18 × 6 = 108 → Add zero → 1080

7. 490 × 9
→ 49 × 9 = 441 → Add zero → 4410

8. 530 × 7
→ 53 × 7 = 371 → Add zero → 3710

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Row 3:

9. 630 × 4
→ 63 × 4 = 252 → Add zero → 2520

10. 710 × 3
→ 71 × 3 = 213 → Add zero → 2130

11. 930 × 2
→ 93 × 2 = 186 → Add zero → 1860

12. 610 × 5
→ 61 × 5 = 305 → Add zero → 3050

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Row 4:

13. 590 × 7
→ 59 × 7 = 413 → Add zero → 4130

14. 640 × 8
→ 64 × 8 = 512 → Add zero → 5120

15. 770 × 9
→ 77 × 9 = 693 → Add zero → 6930

16. 870 × 6
→ 87 × 6 = 522 → Add zero → 5220

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## 🎯 Final Answer Key (in order):

```
2600 520 960 840
1840 1080 4410 3710
2520 2130 1860 3050
4130 5120 6930 5220
```

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## 🧠 Why This Works:

Multiplying by 10 adds a zero. So when you have a number like 520, it’s the same as 52 × 10.
So:
520 × 5 = (52 × 10) × 5 = 52 × 5 × 10 = 260 × 10 = 2600

This shortcut saves time and reduces errors!

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✔ You’re all set! Just fill in the boxes with these answers. Great practice for mental math and place value understanding! 😊