Mental Math
430 + 331
761
3,438 + 4,987
8,000
2,321 + 6,532
8,853
6,342 - 4,422
1,920
Use metal math (break apart strategy) to solve
6,500 + 813
7,313
44,453 - 27,621
10,000
6,211 + 9,532
15,743
883,688 - 791,447
92,241
Use metal math (break apart strategy) to solve
46,900 + 34,018
80,918
2,367 + 89
2,500
226,211 + 79,527 =
305,738
26,786 - 7,497
19,289
Use metal math (break apart strategy) to solve
145,365 + 157,482
302,847
48,575 - 34,142
20,000
39,522 + 11,758 + 6,826
58,106
264,876 - 97,984
166,892