adding
adding 2
MUTIPLICATION
subtracting
subtracting 2
100

12+12

24

100

15+23

38

100

2x2

4


100

2-2

0

100

12-4

8

200

4+4

8


200

12+4

16

200

6x2

12


200

12-3

9
200

12-5

7

300

6+6

12

300

18+321

339

300

2x8

16

300

123-1+1

123

300

123-24

99


400

7+7

14


400

19+5

24

400

8x4

32

400

15-20

cant do it

400

12-0

12


500

10+10

20



500

20+13

33


500

9x4

36


500

27-8

19

500

596-9

587