To solve this problem, we need to estimate the product of each pair of numbers by rounding each number to the nearest hundred and then multiplying the rounded numbers.
Let’s go step by step for each pair:
1.
273 × 125
- Round 273 to the nearest hundred: 300
- Round 125 to the nearest hundred: 100
- Estimated product: 300 × 100 = 30,000
2.
321 × 251
- Round 321 to the nearest hundred: 300
- Round 251 to the nearest hundred: 300
- Estimated product: 300 × 300 = 90,000
3.
471 × 341
- Round 471 to the nearest hundred: 500
- Round 341 to the nearest hundred: 300
- Estimated product: 500 × 300 = 150,000
4.
361 × 234
- Round 361 to the nearest hundred: 400
- Round 234 to the nearest hundred: 200
- Estimated product: 400 × 200 = 80,000
5.
261 × 152
- Round 261 to the nearest hundred: 300
- Round 152 to the nearest hundred: 200
- Estimated product: 300 × 200 = 60,000
6.
471 × 241
- Round 471 to the nearest hundred: 500
- Round 241 to the nearest hundred: 200
- Estimated product: 500 × 200 = 100,000
7.
223 × 151
- Round 223 to the nearest hundred: 200
- Round 151 to the nearest hundred: 200
- Estimated product: 200 × 200 = 40,000
8.
361 × 134
- Round 361 to the nearest hundred: 400
- Round 134 to the nearest hundred: 100
- Estimated product: 400 × 100 = 40,000
9.
386 × 142
- Round 386 to the nearest hundred: 400
- Round 142 to the nearest hundred: 100
- Estimated product: 400 × 100 = 40,000
10.
512 × 123
- Round 512 to the nearest hundred: 500
- Round 123 to the nearest hundred: 100
- Estimated product: 500 × 100 = 50,000
11.
561 × 131
- Round 561 to the nearest hundred: 600
- Round 131 to the nearest hundred: 100
- Estimated product: 600 × 100 = 60,000
12.
562 × 252
- Round 562 to the nearest hundred: 600
- Round 252 to the nearest hundred: 300
- Estimated product: 600 × 300 = 180,000
13.
361 × 120
- Round 361 to the nearest hundred: 400
- Round 120 to the nearest hundred: 100
- Estimated product: 400 × 100 = 40,000
14.
451 × 321
- Round 451 to the nearest hundred: 500
- Round 321 to the nearest hundred: 300
- Estimated product: 500 × 300 = 150,000
15.
321 × 221
- Round 321 to the nearest hundred: 300
- Round 221 to the nearest hundred: 200
- Estimated product: 300 × 200 = 60,000
Final Answer:
30,000, 90,000, 150,000, 80,000, 60,000, 100,000, 40,000, 40,000, 40,000, 50,000, 60,000, 180,000, 40,000, 150,000, 60,000
Parent Tip: Review the logic above to help your child master the concept of multiplication estimation worksheet.
