Subtraction
245-213
32
254+ 92
346
Estimate the sum of 65 and 89
160
In 539 which digit is in the tens place?
3
17+(43+12)= (__+43)+12
17
911-855
106
220 + 736
What is 956
Estimate the difference between 96 and 68
30
9
47+35=35+___
47
514-326
188
192 + 45
237
Estimate the difference in 512 and 387
100
Which digit is in the hundreds place in 807?
8
130+___= 130
0
737 - 604
133
635+189
824
Estimate the sum of 198 and 685
900
In 537-49, do you need to regroup?
yes
(3+8) +7 = 3+ (___+7)
8
801-645
156
349+395
744
Estimate the difference in 72 and 25
40
In 728-639, how many times do you need to regroup?
2
28+4 = 4+ _____
28