Mental Math
Addition
Subtraction
Place Value
Mystery!
100

10 more then 34 is ____

44

100

45 + 34 = 

79

100

45 - 22= 

23

100

What is the value of the 6?

654

600

100

5 x 8 

40

200

10 less than 56 is ___

46

200

67 + 27 = 

94

200

86 - 38 = 

48

200

Write 346 in expanded form

300 + 40 + 6

200

6 x __ = 42

7

300

40 + 23 = 

63

300

45 + 89

134

300

146 - 34 = 

112

300

Write this number in standard form:


400 + 30 + 5

435

300

what is the value of the 3 in 3, 456

3,000

400

32 + 21

53

400

107 - 45 = 

62

400

What place value is to the left of the tens?

hundreds

500

20 more than 345 is ____

365

500

105 - 65

119

500

How many tens makes 100?

10

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