Place Value
1 Digit Addition
1 Digit Subtraction
2 Digit Addition
2 Digit Subtraction
100
How many tens are in the number 87?

8

100

4+3=

7

100

8-4=

4

100

10+10=

20
100

35-20=

15

200

How many ones are in the number 39?

9

200

6+2=

8

200

6-3=

3

200

33+21=

54

200

45-35=

10

300

How many tens are in the number 336?

3

300

9+4=

13

300

9-4=

5

300

67+22=

89

300

88-75=

13

400

How many hundreds are in the number 739?

7

400

6+5=

11

400

3-1=

2

400

81+18

99

400

88-44=

44

500

How many hundreds are in the number 1,479?

4

500

8+7=

15

500

9-9=

0

500

90+15=

105

500

95-15=

80

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