Addition
Subtraction
Place Value
Addition of Three Numbers
Multiplication by 2
100

    27 

+  33

60

100

    55 

-   32

23

100

What number is in the one's place in 205

5

100

    7

    7 

+  3


17

100

2 x 1 =

2

200

    55 

+  26

81

200

    75 

-   54

21

200

What number is in the ten's place in 385

8

200

    8

    7 

+  2

17

200

2 x 2 =

4

300

    33 

+  39

72

300

    99 

-   23

75

300

What number is in the hundred's place in 374

3

300

   2

   4

+ 2

8

300

2 x 3 =

6

400

    46 

+  26

72

400

    88

-   21

67

400

What number is in the ten's place in 909

0

400

    9

    6 

+  5

20

400

2 x 5 =

10

500

    76

+  24

100

500

    89 

-   78

11

500

What number is in the thousand's place in 1,375

1

500

  10

    6 

+  5

21

500

2 x 6 =

12