Let's solve the
"Estimating Products" worksheet step by step.
---
Instructions Recap:
- Multiply the numbers.
- Round
each whole number to the nearest ten.
- Then multiply the two rounded numbers together.
We'll go through each problem one by one.
---
Problem 1:
```
25 → 30
×13 → ×10
300
```
✔ Already solved:
- 25 rounds to
30
- 13 rounds to
10
- 30 × 10 =
300
---
Problem 2:
```
22 → ___
×15 → ×___
_____
```
- 22 → nearest ten is
20
- 15 → nearest ten is
10
- 20 × 10 =
200
✔ Answer:
```
22 → 20
×15 → ×10
200
```
---
Problem 3:
```
72 → ___
×45 → ×___
_____
```
- 72 → nearest ten is
70
- 45 → nearest ten is
50
- 70 × 50 =
3,500
✔ Answer:
```
72 → 70
×45 → ×50
3500
```
---
Problem 4:
```
63 → ___
×39 → ×___
_____
```
- 63 → nearest ten is
60
- 39 → nearest ten is
40
- 60 × 40 =
2,400
✔ Answer:
```
63 → 60
×39 → ×40
2400
```
---
Problem 5:
```
46 → ___
×22 → ×___
_____
```
- 46 → nearest ten is
50
- 22 → nearest ten is
20
- 50 × 20 =
1,000
✔ Answer:
```
46 → 50
×22 → ×20
1000
```
---
Problem 6:
```
89 → ___
×45 → ×___
_____
```
- 89 → nearest ten is
90
- 45 → nearest ten is
50
- 90 × 50 =
4,500
✔ Answer:
```
89 → 90
×45 → ×50
4500
```
---
Problem 7:
```
68 → ___
×23 → ×___
_____
```
- 68 → nearest ten is
70
- 23 → nearest ten is
20
- 70 × 20 =
1,400
✔ Answer:
```
68 → 70
×23 → ×20
1400
```
---
Problem 8:
```
92 → ___
×32 → ×___
_____
```
- 92 → nearest ten is
90
- 32 → nearest ten is
30
- 90 × 30 =
2,700
✔ Answer:
```
92 → 90
×32 → ×30
2700
```
---
✔ Final Answers:
| Problem | Rounded Numbers | Estimated Product |
|--------|------------------|--------------------|
| 1 | 30 × 10 | 300 |
| 2 | 20 × 10 | 200 |
| 3 | 70 × 50 | 3,500 |
| 4 | 60 × 40 | 2,400 |
| 5 | 50 × 20 | 1,000 |
| 6 | 90 × 50 | 4,500 |
| 7 | 70 × 20 | 1,400 |
| 8 | 90 × 30 | 2,700 |
---
📝 Summary of How to Estimate:
1.
Round each factor to the nearest ten.
2.
Multiply the rounded numbers.
3. This gives an
estimate of the actual product (useful for quick mental math).
This method helps check if your exact multiplication answer is reasonable.
Let me know if you'd like a printable version or help with actual multiplication!
Parent Tip: Review the logic above to help your child master the concept of estimating multiplication worksheet.
