Show:
Counting on
Making 10
Adding groups
Addition to 5
Addition to 10
100

1, ___, ___, ___

2, 3, 4

100

10 + ___

0

100

x x x  +   o o

5

100

1 +  1 =

2

100

8 +  1 =

9

200

3, __, __, __

4, 5, 6, 

200

5 + ___

5

200

x x x x x  +  o o o o=

9

200

1 +  2 =

3

200

5 +  2 =

7

300

5, __, __, __

6, 7, 8

300

8 + ___

2

300

x x x x +  o o o=

7

300

2 + 2 =

4

300

4 +  4 =

8

400

8, __, __, __

9, 10, 11

400

7 + ___

3

400

x x x x x x + o o o o =

10

400

1 +  3 =

4

400

2 +  7 =

9

500

15, __, __, __

16, 17, 18

500

6 + ___

4

500

x x x x x x x x  +  o o o o=

12

500

3 +  2 =

5

500

3 +  5 =

8