SIMPLE 1 DIGIT ADDITION
DOUBLE DIGIT ADDITION
TRIPLE DIGIT ADDITION
100

1+1 

2

100

20+30

50

100

100+100

200

200

5+3

8

200

60+60

120

200

400+300

700

300

7+9

16

300

50+40

90

300
300+500

800

400

9+9

18

400

12+12

24
400

300+300

600

500

10+10

20

500

80+80

160

500

500+500

1,000