Multiplication / Mental Math Flashcards

1
Q

8 x 9

A

72

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2
Q

1 / 5

A

0.2

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3
Q

Multiple of x + / - Multiple of x

A

Multiple of x

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4
Q

Multiple of x + / - Non-multiple of x

A

Non-multiple of x

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5
Q

Non-multiple of x + / - Non-multiple of x

A

Maybe Multiple of x

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6
Q

Any consecutive x #s multiplied together

A

Multiple of x

*If successive numbers pass 0, then obviously result of multiplication is 0

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7
Q

Non-multiple of x * Non-multiple of x

A

Non-multiple of x

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8
Q

Multiple of x * Multiple of x

A

Multiple of x AND Multiple of x Squared

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9
Q

Multiple of x / Multiple of x

A

May or may not be a multiple of x

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10
Q

3 x 8

A

24

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11
Q

7^4

A

2401

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12
Q

50^2

A

2500

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13
Q

1 x 1

A

1

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14
Q

2 / 3

A

0.6666

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15
Q

2 x 2

A

4

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16
Q

6!

A

720

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17
Q

3 x 9

A

27

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18
Q

5 x 5

A

25

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19
Q

1 / 3

A

.3333

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20
Q

4!

A

24

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21
Q

25^2

A

625

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22
Q

4 x 6

A

24

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23
Q

9 x 8

A

72

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24
Q

12 x 3

A

12

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25
Q

5 / 6

A

.8333

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26
Q

5!

A

120

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27
Q

5 x 4

A

20

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28
Q

3 / 5

A

.6

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29
Q

1 x 2

A

2

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30
Q

9 x 2

A

18

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31
Q

6 x 9

A

54

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32
Q

8 x 6

A

48

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33
Q

3 x 2

A

6

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34
Q

1 x 3

A

3

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35
Q

2^10

A

1024

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36
Q

7 x 8

A

56

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37
Q

2 x 5

A

10

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38
Q

2^9

A

512

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39
Q

7 x 6

A

42

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40
Q

2^8

A

256

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41
Q

7 x 9

A

63

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42
Q

2 x 8

A

16

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43
Q

2^7

A

128

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44
Q

3 x 3

A

9

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45
Q

8 x 1

A

8

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46
Q

6 x 7

A

42

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47
Q

12 x 12

A

144

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48
Q

4 x 9

A

36

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49
Q

6 x 3

A

18

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50
Q

2^4

A

16

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51
Q

6 x 1

A

6

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52
Q

4 x 8

A

32

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53
Q

6 x 5

A

30

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54
Q

2^2

A

4

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55
Q

1 / 6

A

.16666

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56
Q

7 / 8

A

.875

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57
Q

1 x 4

A

4

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58
Q

9 x 3

A

27

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59
Q

13^2

A

169

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60
Q

5 x 6

A

30

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61
Q

1 x 8

A

8

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62
Q

12 x 10

A

120

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63
Q

9 x 6

A

54

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64
Q

5 x 9

A

45

65
Q

12 x 4

A

48

66
Q

1 / 2

A

.5

67
Q

12 x 2

A

24

68
Q

12 x 6

A

72

69
Q

3 / 4

A

.75

70
Q

9 x 1

A

9

71
Q

4 x 5

A

20

72
Q

7 x 3

A

21

73
Q

1 x 6

A

6

74
Q

3 x 4

A

12

75
Q

2 x 6

A

12

76
Q

2 x 9

A

18

77
Q

6 x 6

A

36

78
Q

7 x 5

A

35

79
Q

2^5

A

32

80
Q

6 x 8

A

48

81
Q

3 x 5

A

15

82
Q

3 x 1

A

3

83
Q

8 x 7

A

56

84
Q

12^2

A

144

85
Q

12 x 11

A

132

86
Q

2^6

A

64

87
Q

3^6

A

729

88
Q

8 x 8

A

64

89
Q

8 x 5

A

40

90
Q

3!

A

6

91
Q

5 / 8

A

.625

92
Q

1 x 7

A

7

93
Q

30^2

A

900

94
Q

9 x 9

A

81

95
Q

12 x 3

A

36

96
Q

4 x 7

A

28

97
Q

100^2

A

10,000

98
Q

7 x 7

A

49

99
Q

3 x 7

A

21

100
Q

4 / 5

A

.8

101
Q

9 x 7

A

63

102
Q

4 x 1

A

4

103
Q

3^4

A

81

104
Q

15^2

A

225

105
Q

1 / 4

A

.25

106
Q

5 x 1

A

5

107
Q

20^2

A

400

108
Q

12 x 1

A

12

109
Q

8 x 2

A

16

110
Q

5^4

A

625

111
Q

11 x 11

A

121

112
Q

6^2

A

36

113
Q

3^2

A

9

114
Q

9 x 4

A

36

115
Q

6^4

A

1296

116
Q

√2

A

~1.4

117
Q

5 x 8

A

40

118
Q

3^5

A

243

119
Q

5^5

A

3125

120
Q

7 x 2

A

14

121
Q

8 x 4

A

32

122
Q

3^3

A

27

123
Q

6^3

A

216

124
Q

12 x 5

A

60

125
Q

1 / 8

A

.125

126
Q

5 x 3

A

15

127
Q

Common Pythagorean Triples

A

3, 4, 5
5, 12, 13
7, 24, 25
8, 15, 17

128
Q

Primes under 40

A

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37

129
Q

2 x 1

A

2

130
Q

2^3

A

8

131
Q

6 x 2

A

12

132
Q

12 x 8

A

96

133
Q

12 x 9

A

108

134
Q

2 x 7

A

14

135
Q

√5

A

~2.2

136
Q

5^2

A

25

137
Q

5 x 7

A

35

138
Q

9 x 5

A

45

139
Q

1 x 9

A

9

140
Q

5^3

A

125

141
Q

1 X 5

A

5

142
Q

2 X 3

A

6

143
Q

7^3

A

343

144
Q

2/5

A

0.4

145
Q

14^2

A

196

146
Q

3/8

A

0.375

147
Q

12 X 7

A

84

148
Q

5 X 2

A

10

149
Q

40^2

A

1600

150
Q

7 X 4

A

28

151
Q

4 X 4

A

16

152
Q

√3

A

~1.7

153
Q

2 X 4

A

8

154
Q

4 X 2

A

8

155
Q

8 X 3

A

24

156
Q

7^2

A

49

157
Q

6 X 4

A

24

158
Q

7 X 1

A

7