Show:
Addition
Subtraction
100

1+3=

1+3=4

100

2-2=

2-2=0

200

5+5=

5+5=10

200

5-3=

5-3=2

300

5+6=

5+6=11

300

7-4=

7-4=3

400

3+7=

3+7=10

400

8-6=

8-6=2

500

10+11=

10+11=21

500

10-7

10-7=3