Rounding to the tens
Rounding to the hundreds
Rounding to the thousands
Estimation
Mixed Bag
100
87
90
100
8
0
100
478
0
100
What is the best estimate for 65 + 22 A. 60 + 20 B. 70 + 20 C. 60 + 30 D. 70 + 30
B
100
Round to the nearest 10: 7
10
200
134
130
200
99
100
200
1,087
1,000
200
What is the best estimate for 178 + 854 A. 200 + 900 B. 100 + 800 C. 200 + 800 D. 150 + 850
A
200
Round to the nearest 100 489
500
300
365
370
300
632
600
300
3,989
4,000
300
What is the best estimate for 1,458 + 2,399 A. 1000+ 3000 B. 2000+3000 C. 1000 + 4000 D. 1000 + 2000
D
300
Round to the nearest 1,000 765
1,000
400
4,121
4,120
400
8,432
8,400
400
6,655
7,000
400
Which is the best estimate for 89 + 12 A. 100 B. 90 C. 110 D. 101
A
400
Round to the nearest 10 7,642
7,640
500
87,645
87,650
500
9,561
9,600
500
5,349
5,400
500
What is the best estimate for 349 + 487 A. 700 B. 800 C. 900 D. 600
B
500
Estimate the difference of 872- 522 A. 800- 500 B. 900- 600 C. 900-500 D. 800 - 600
C
M
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