Show:
addition
times
subtraction
algebra
division
100

5+2

7

100

7x2

14

100

5-2

3

100

2+a=

a=13

15

100

10 divided by 2 

5

200

10+25

35

200

7x4

28

200

10-13

-3

200

a=21,b=13

a2+b=

55

200

20 divided by 10  

2

300

20+55

75

300

30x5

150

300

25 - 2.5

22.5

300

z=13, b=10.5

z+b2 

34

300

21 divided by 3

7

400

53+9.5

62.5

400

12.5x6

75

400

55- 27

28

400

b=9

bx2

18

400

33 divided by 12

2.75

500

110+223

333

500

33x9

297

500

1324- 1111

213

500

a=12.5

b=13

axb

162.5

500

550 divide by 3 

183.33333333