Show:
Adding up to 10
Adding up to 20
lets Read
subtracting to 20
subtracting to 10
100

2 +1=

3

100

10+1=

11

100

Cat

cat

100

15 -5=

10

100

5 -1=

4

200

3 +3=

6

200

12+2=


14

200

mat

mat

200

16 -2=

14

200

10-2=

8

300

7+2=

9

300

15+5=

20

300

shop

shop

300

13 -6=

7

300

8 -4=

4

400

9+1=

10

400

17+3=

20

400

chick

chick

400

11 -5=

6

400

10 -5=

5

500

4+ _ =9

5

500

13+ _=15

2

500

itch

slip

500

18 -10=

8
500

10 -9=

1