Mental Math Addition/Subtraction Flashcards
1
Q
100+ 375=
A
475
2
Q
700-200=
A
500
3
Q
45+ 55=
A
100
4
Q
1,800- 300=
A
1,500
5
Q
10+ 15+ 35=
A
60
6
Q
85+ 20=
A
105
7
Q
276+ 14=
A
290
8
Q
59+ 11=
A
70
9
Q
202+ 6=
A
208
10
Q
655+ 0=
A
655
11
Q
47+ 53=
A
100
12
Q
62+ 38=
A
100
13
Q
40+ 67=
A
107
14
Q
78- 33=
A
45
15
Q
11+ 33=
A
44
16
Q
56+ 34=
A
90
17
Q
47-0=
A
47
18
Q
111- 10=
A
101
19
Q
111+ 10=
A
121
20
Q
888- 100=
A
788
21
Q
1,100+ 645=
A
1,745
22
Q
310 + 89=
A
399
23
Q
1,400-400=
A
1,000
24
Q
255+ 40=
A
295
25
17+ 63=
80
26
345- 44=
301
27
10 + 70 + 11
91
28
58-27=
31
29
230 + 22+ 30
282
30
26+ 44+ 19
70+ 19= 89
31
36+ 70=
106
32
550+ 444=
994
33
123+ 321
444
34
248+ 102
350
35
20 + 47=
67
36
76-66=
10
37
25+ 61+ 75=
161
38
314- 12
302
39
543+ 346
889
40
1,000-600=
400
41
235+ 502=
737
42
212+ 191=
403
43
229+ 334
563
44
782- 61
721
45
1,957- 532=
1,425
46
757 + 9 + 33=
790+ 9= 799
47
9 + 2+ 8+ 11+ 13+ 7=
50
48
250- 150=
100
49
899- 564=
335
50
21,275- 1, 100=
20, 175
