Rounding
Rounded to the nearest 10, 45 rounds to...
50
Add: 45 + 87=
132
Subtract
81-26=
55
What is a reasonable estimate for
53-18=
30
Rounded to the nearest 10, 34 rounds to...
30
Add: 235 + 68=
303
Subtract
82-54=
28
Round the number 58 to the nearest 10 and nearest 100
60
100
Rounded to the nearest 10, 451 rounds to...
450
Add using PARTIAL SUMS
598 + 333=
931
Subtract
430-250=
180
What is a reasonable estimate for
692- 110=
600
Rounded to the nearest 100, 836 rounds to...
800
Add using COUNT ON....
489 + 246=
735
Subtract
300-176=
124
Which expression is equal to 298 + 378?
300 + 376
300 + 378
301+ 380
298 + 378 = 676
300 + 376= 676
Rounded to the nearest 10, 619 rounds to...
620
Add using any strategy
529 + 476=
1,005
Subtract
600-56=
544
Use estimation to identify two expressions with a value of approximately 700. Select the two correct answers.
295 + 389 658 + 629
215 + 937 428 + 294
295 + 389
428 + 294