Finding Sums and Differences with Mental Math
Use mental math strategies to solve:
6,794 - 999
5,795
Estimate each sum or difference:
5,638 + 3,753
9,400 (Answers may vary)
148 + 157
305
14,312 + 9,617
23,929
154 - 89
65
Use mental math strategies to solve:
4,505 + 3,515
8,020
Estimate each sum or difference:
63,526 + 25,038
89,000 (Answers may vary)
389 + 461
850
275,558 + 605,131
880,689
592 - 357
235
Use mental math strategies to solve:
9,100 + 2,130 + 900
12,130
Estimate each sum or difference:
262,262 - 132,147
130,000
565 + 694
1,259
5,555 + 7,412
12,967
915 - 288
627
Use mental math to solve:
8,375 + 31,145
39,520
Estimate each sum or difference:
5,323 + 2,611
8,000 (Answers may vary)
375 + 548
923
21,009 + 5,529
26,538
743 - 694
49
Use mental math to solve:
6,686 - 1,443
5,243
Estimate each sum or difference:
49,761 + 59,499
110,000 (Answers may vary)
909 + 624
1,533
64,673 + 48,262 + 8,918
121,853
525 - 267
258