Absolutely! Let’s solve this worksheet step by step and explain the patterns behind multiplying by 10, 100, and 1000.
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##
✔ Part 1: Multiply by 10
Rule: When you multiply any whole number by 10, you add
one zero to the end of the number.
Let’s solve:
1.
45 × 10 = 450
2.
26 × 10 = 260
3.
19 × 10 = 190
4.
84 × 10 = 840
5.
24 × 10 = 240
6.
22 × 10 = 220
✔ What happens when we multiply a number by ten?
> You add one zero at the end of the number. This is because multiplying by 10 shifts every digit one place to the left in the place value system (e.g., units become tens, tens become hundreds, etc.).
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##
✔ Part 2: Multiply by 10, then by 10 again (i.e., multiply by 100)
Rule: Multiplying by 10 twice = multiplying by 100 → Add
two zeros to the end.
7.
23 × 10 × 10 = 23 × 100 = 2300
8.
17 × 10 × 10 = 17 × 100 = 1700
9.
35 × 10 × 10 = 35 × 100 = 3500
10.
48 × 10 × 10 = 48 × 100 = 4800
✔ What happens when we multiply a number by 100?
> You add two zeros to the end of the number. This shifts each digit two places to the left in the place value system.
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##
✔ Part 3: Multiply by 1000
Big Clue Reminder: 1000 = 10 × 10 × 10 → So multiplying by 1000 means adding
three zeros.
Let’s finish the last section:
11.
43 × 10 = 430
12.
65 × 100 = 6500
13.
45 × 1000 = 45000
14.
74 × 10 = 740
15.
88 × 1000 = 88000
16.
66 × 100 = 6600
✔ What happens when we multiply by 1000?
> You add three zeros to the end of the number. This shifts each digit three places to the left in the place value system.
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## 🎯
Summary of Patterns:
| Multiplier | What to do | Example |
|------------|-----------------------------|---------------------|
| × 10 | Add
1 zero | 37 × 10 = 370 |
| × 100 | Add
2 zeros | 37 × 100 = 3700 |
| × 1000 | Add
3 zeros | 37 × 1000 = 37000 |
This works for
whole numbers. For decimals, you move the decimal point instead — but that’s not needed here!
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## ✍️ Final Answers (for the worksheet):
1. 450
2. 260
3. 190
4. 840
5. 240
6. 220
→ *When we multiply a number by ten, we add one zero at the end.*
7. 2300
8. 1700
9. 3500
10. 4800
→ *When we multiply a number by 100, we add two zeros at the end.*
11. 430
12. 6500
13. 45000
14. 740
15. 88000
16. 6600
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You’ve now mastered multiplying by 10, 100, and 1000 using the “add zeros” rule! 🎉
Great job — this is foundational math that will help with bigger calculations later!
Parent Tip: Review the logic above to help your child master the concept of multiply by 10 100 and 1000 worksheet.
