Rounding
(nearest 10)
(nearest 10)
Round 23 to the nearest 10
20
Round 140 to the nearest 100
100
Use a strategy to add: 120 + 253
373
Subtract 450 - 120
330
5 x 5
25
Round 58 to the nearest 10
60
Round 639 to the nearest 100
600
Use a strategy to add: 256 + 321
577
Subtract 684 - 162
522
10 x 6
60
Round 65 to the nearest 10
70
Round 278 to the nearest 100
300
Use a strategy to add: 282 + 153
435
Subtract 587 -269
318
4 x 9
36
Round 754 to the nearest 10
750
Round 897 to the nearest 100
900
Use a strategy to add: 634 + 192
826
Subtract 815 -362
453
8 x 3
24
Round 337 to the nearest 10
340
Round 1,867 to the nearest 100
1,900
Use a strategy to add: 467 + 156
623
Subtract 999 - 365
634
7 x 6
42