addition
subtraction
base ten blocks
place value
mystery math
100

23 + 14 = ?

37

100

47 − 12 = ?

35

100

How many tens and ones are in 42?

4 ten and 1 one

100

What is the value of the 5 in 56?

50

100

What number comes after 49?

50

200

35 + 27 = ?

62

200

63 − 21 = ?

42

200

Build 57 with your blocks.

5 ten and 7 ones

200

Write 72 in expanded form.

70 + 2

200

What is 10 more than 36?

46

300

46 + 18 = ?

64

300

52 − 28 = ?




24

300

What number is shown?


3 tens and 6 ones

36

300

have 6 tens and 4 ones. What number am I?

64

300

What is 10 less than 82?

72

400

28 + 37 = ?

65

400

71 − 36 = ?

35

400

Show 63 using base-ten blocks.

6 ten and 3 ones

400

Which is greater: 68 or 86?

86

400

I am thinking of a number. It has 5 tens and 8 ones. What am I?

58

500

56 + 29 = ?

85

500

84 − 47 = ?

37

500

Build 48. Add 27. Regroup if needed. What number do you have?



75

500

What number has 7 tens and 13 ones after regrouping?

83

500

I have 7 tens. I am less than 80 and greater than 72. What numbers could I be?

73, 74,75,76,77,78,79

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