Estimate
5,323 + 2,611 =
8,000
148 + 157 =
305
289 - 145 =
144
400 - 215 =
185
4,225 + 98 =
4,300
371 + 454 =
825
525 - 267 =
258
5,000 - 2,058 =
2,942
49,761 + 59,499 =
110,000
14,312 + 9,617 =
23,929
9,128 - 3,753 =
5,375
22,700 - 20,487 =
2,213
738,775 + 272,044 =
1,000,000
5,801 + 4,189 =
9,990
42,648 - 8,169 =
34,479
50,000 - 6,826 =
43,174
542,817 - 27,398 =
470,000
275,558 + 605,131 =
880,689
215,714 - 176,313 =
39,401
900,000 - 54,862 =
845,138