Show:
Addition 0's to 5's
Addition 6's to 10's
Addition 11's to 15's
Subtraction 1's to 5's
Subtraction 6's to 10's
Subtraction 11's to
15's

100

0+1=

0+1=1

100

6+2=

6+2=8

100

11+4=

11+4=15

100

2-1=

2-1=1

100

14-6=

14-6=8

100

14-11=

14-11=3

200

2+3=

2+3=5

200

7+6=

7+6+13

200

12+12=

12+12=24

200

11-2=

11-2=9

200

9-7=

9-7=2

200

17-12=

17-12=5

300

3+4=

3+4=7

300

8+4=

8+4=12

300

13+8=

13+8=21

300

8-3=

8-3=5

300

17-8=

17-8=9

300

23-13=

23-13=10

400

4+6=

4+6=10

400

9+9=

9+9=18

400

14+10=

14+10=24

400

9-4=

9-4=5

400

13-9=

13-9=4

400

19-14=

19-14=5

500

5+8=

5+8=13

500

10+3=

10+3=13

500

15+14=

15+14=29

500

13-5=

13-5=8

500

25-10=

25-10=15

500

24-15=

24-15=