Multiplication / Mental Math Flashcards
(158 cards)
1
Q
8 x 9
A
72
2
Q
1 / 5
A
0.2
3
Q
Multiple of x + / - Multiple of x
A
Multiple of x
4
Q
Multiple of x + / - Non-multiple of x
A
Non-multiple of x
5
Q
Non-multiple of x + / - Non-multiple of x
A
Maybe Multiple of x
6
Q
Any consecutive x #s multiplied together
A
Multiple of x
*If successive numbers pass 0, then obviously result of multiplication is 0
7
Q
Non-multiple of x * Non-multiple of x
A
Non-multiple of x
8
Q
Multiple of x * Multiple of x
A
Multiple of x AND Multiple of x Squared
9
Q
Multiple of x / Multiple of x
A
May or may not be a multiple of x
10
Q
3 x 8
A
24
11
Q
7^4
A
2401
12
Q
50^2
A
2500
13
Q
1 x 1
A
1
14
Q
2 / 3
A
0.6666
15
Q
2 x 2
A
4
16
Q
6!
A
720
17
Q
3 x 9
A
27
18
Q
5 x 5
A
25
19
Q
1 / 3
A
.3333
20
Q
4!
A
24
21
Q
25^2
A
625
22
Q
4 x 6
A
24
23
Q
9 x 8
A
72
24
Q
12 x 3
A
12
25
5 / 6
.8333
26
5!
120
27
5 x 4
20
28
3 / 5
.6
29
1 x 2
2
30
9 x 2
18
31
6 x 9
54
32
8 x 6
48
33
3 x 2
6
34
1 x 3
3
35
2^10
1024
36
7 x 8
56
37
2 x 5
10
38
2^9
512
39
7 x 6
42
40
2^8
256
41
7 x 9
63
42
2 x 8
16
43
2^7
128
44
3 x 3
9
45
8 x 1
8
46
6 x 7
42
47
12 x 12
144
48
4 x 9
36
49
6 x 3
18
50
2^4
16
51
6 x 1
6
52
4 x 8
32
53
6 x 5
30
54
2^2
4
55
1 / 6
.16666
56
7 / 8
.875
57
1 x 4
4
58
9 x 3
27
59
13^2
169
60
5 x 6
30
61
1 x 8
8
62
12 x 10
120
63
9 x 6
54
64
5 x 9
45
65
12 x 4
48
66
1 / 2
.5
67
12 x 2
24
68
12 x 6
72
69
3 / 4
.75
70
9 x 1
9
71
4 x 5
20
72
7 x 3
21
73
1 x 6
6
74
3 x 4
12
75
2 x 6
12
76
2 x 9
18
77
6 x 6
36
78
7 x 5
35
79
2^5
32
80
6 x 8
48
81
3 x 5
15
82
3 x 1
3
83
8 x 7
56
84
12^2
144
85
12 x 11
132
86
2^6
64
87
3^6
729
88
8 x 8
64
89
8 x 5
40
90
3!
6
91
5 / 8
.625
92
1 x 7
7
93
30^2
900
94
9 x 9
81
95
12 x 3
36
96
4 x 7
28
97
100^2
10,000
98
7 x 7
49
99
3 x 7
21
100
4 / 5
.8
101
9 x 7
63
102
4 x 1
4
103
3^4
81
104
15^2
225
105
1 / 4
.25
106
5 x 1
5
107
20^2
400
108
12 x 1
12
109
8 x 2
16
110
5^4
625
111
11 x 11
121
112
6^2
36
113
3^2
9
114
9 x 4
36
115
6^4
1296
116
√2
~1.4
117
5 x 8
40
118
3^5
243
119
5^5
3125
120
7 x 2
14
121
8 x 4
32
122
3^3
27
123
6^3
216
124
12 x 5
60
125
1 / 8
.125
126
5 x 3
15
127
Common Pythagorean Triples
3, 4, 5
5, 12, 13
7, 24, 25
8, 15, 17
128
Primes under 40
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37
129
2 x 1
2
130
2^3
8
131
6 x 2
12
132
12 x 8
96
133
12 x 9
108
134
2 x 7
14
135
√5
~2.2
136
5^2
25
137
5 x 7
35
138
9 x 5
45
139
1 x 9
9
140
5^3
125
141
1 X 5
5
142
2 X 3
6
143
7^3
343
144
2/5
0.4
145
14^2
196
146
3/8
0.375
147
12 X 7
84
148
5 X 2
10
149
40^2
1600
150
7 X 4
28
151
4 X 4
16
152
√3
~1.7
153
2 X 4
8
154
4 X 2
8
155
8 X 3
24
156
7^2
49
157
6 X 4
24
158
7 X 1
7
