Rounding
Round 32 to the nearest ten
30
137
100
Estimate the sum by rounding to the nearest ten:
52 + 38
50 + 40 = 90
Estimate the difference by rounding to the nearest ten:
57 - 42
60 - 40 = 20
Max and Sam went to Main Event. Max had 67 tokens, and Sam had 32 tokens.
Rounded to the nearest ten, how many more tokens did Max have than Sam?
70 - 30 = 40
Round 385 to the nearest hundred
400
5,492
5,500
Estimate the sum by rounding to the nearest hundred:
421 + 268
400 + 300 = 700
Estimate the difference by rounding to the nearest ten:
657 - 442
660 - 440 = 220
Mrs. Miller has 200 chickens. Last week, her chickens laid 342 eggs. This week, they laid 451 eggs. Rounded to the nearest ten, what is the difference in the number of eggs laid each week?
500 - 300 = 200
Round 482 to the nearest ten
490
5,837
5,840
Estimate the sum by rounding to the nearest ten:
549 + 250
500 + 300 = 800
Estimate the difference by rounding to the nearest ten:
575 - 242
580 - 240 = 340
Nancy grew 561 pumpkins and Mary grew 428 pumpkins this year. Rounding to the nearest ten about how many pumpkins did they grow?
560 + 430 = 990
Round 5,294 to the nearest hundred
5,200
2,492
2,500
Estimate the sum by rounding to the nearest hundred:
2,756 + 2,242
2,800 + 2,200 = 5,000
Estimate the difference by rounding to the nearest hundred:
4,579 - 3,272
4,600 - 3,300 = About 1,300
Mr. K participated in the Nathan’s Hot Dog Eating Contest. Together, all of the contestants ate 1,679 hot dogs. Rounded to the nearest hundred, about how
many hot dogs did they all eat?
1,700
Round 7,173 to the nearest ten
7,170
6,842
6,840
Estimate the sum by rounding to the nearest ten:
5,323 + 3,436
5,320 + 3,440 = 8,760
Estimate the difference by rounding to the nearest ten:
4,586 - 3,274
4,590 - 3,370 = 1,220
Scott scored 2,852 points on the video game and Dan scored 1,823 points. Rounded to the nearest ten, about how many points did they score?
2,850 + 1,820 = 4,670