Show:
Addition
Hard Addition
Subtraction
Hard Subtraction
Name the Letter (Ri)
100

5+4

9

100

30+30

60

100

3-1

2

100

32-9

23

100

D

D
200

6+6

12

200

60+60

120

200

5-2

3

200

27-6

21

200
F
F
300

7+7

14

300

120+20

140

300

8-6

2

300

17-7

10

300

S

S

400

9+9

18

400

160+30

190

400

12-9

3

400

25-6

19

400

Y

Y

500

10+10

20

500

200+200

400

500

16-8

8

500

100-50

50

500

CAT

CAT