Rounding and Estimating
Round 46 to the nearest ten
50
23 + 45 = ?
68
54 − 23 = ?
31
Sam has 45 apples. He gives 12 to Colton and then buys 20 more.
How many apples does Sam have now?
53
123,456 + 234,567 = ?
358,023
Round 523 to the nearest hundred
500
245 + 132 = ?
377
245 − 132 = ?
113
The Woodhull library had 640 books. They added 125 new books and removed 35 old ones.
How many books are there now?
730 books
1,234,567 + 876,432 = ?
2,110,999
Estimate 478 + 326 by rounding each to the nearest hundred
900
1,278 + 4,695 = ?
5,973
1,402 − 678 = ?
724
Woodhull Intermediate School had 1,275 students last year. This year 125 students moved away, but 210 new students enrolled. How many students does the school have now?
1,360
2,234,567 - 1,345,678 = ?
888,889
Round 7,642 to the nearest thousand
8,000
5,867+6,235 = ?
12,102
3,402 − 1,875 = ?
1,527
A store started the week with 8,425 items in stock. They sold 3,286 items and received 1,975 more from a shipment. How many items are in stock now?
7,114
5,678,901 - 3,580,245 =
2,098,656
Estimate 23,478 + 16,924 by rounding each to the nearest thousand
40,000
11,965+12,345 = ?
24,310
12,631 − 7,478 = ?
5,153
A city had 452,870 residents in 2020. In 2021, 8,425 people moved away and 12,658 moved in. In 2022, 4,210 more left. How many people lived there at the end of 2022?
452,893
3,777,333 + 7,333,777 + 1,220,369 =
12,331,479