Mental Math!
Subtract!
Add!
Multiply!
Divide!
Vocabulary
Find x
100

Mental Math

30+30 + 40 =

100

100

Mental Math

222-123

99

100

MENTAL MATH

37 + 70 = 

107

100

MENTAL MATH 

4 x 12

48

100

64/4

16

100

What does "sum," mean

Answer to an addition problem

100

3x = 6

200

9 x 8

72

200

562-572

-10

200

MENTAL MATH

155 + 245 = ? 

400

200

45 x 8 =

360

200

MENTAL MATH

125 divided into 5 groups

25

200

What do you call the numbers 4 and 7 in the problem 4 x 7 = 28

factors

200

5x = 4x

0

300

Mental Math

60 divided by 3=

20

300

Mental Math

60 - 31 = 

29

300

MENTAL MATH

98 + 99 = 

197

300

76 x 5 = ?

380

300

MENTAL MATH

80 divided into 5 groups

16
300

What is the word "difference," refer to in math?

Subtraction

300

What is 50% of 60

30

400

Mental Math

3x3x3

27

400

42-18

24

400

MENTAL MATH

30 + __ = 131

101

400

Mental Math

12 x 7 =

84

400

MENTAL MATH 

45 divided into 9 groups 

5

400

If a word problem asks you "how much more/less" you should use this operation

Subtraction

400

2x+3x=15

3
500

Mental Math

7 x 12 = ?


84

500

Mental Math

Shane's mom said to take a break after lunch at 12:25 p.m. His break was over at 1:10 p.m. How long was his break?

45 minutes

500

143 + 134 = 

277
500

MENTAL MATH

50 x 2 = 

100

500

Mental Math

72 divided into 6 groups

12
500

What does the word "of," in math usually mean.

multiply or multiplication

500

4 + 2x = 6

1

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