Show:
addition
subtration
multiplication
division
2 step
100

              340+89=                          

429

100

39-29=

10

100

10x23=

230

100

9/24368695

2707632R7

100

2x+39=

x=13

200

2+2=

4

200

2-3=

-1

200

4x10=

40

200

0/10=

0

200

x/11+37=128

x=1001

300

9+34=

43

300

70-29=

41

300

30x70=

1000

300

9/81

9

300

6x-5=43

x=8

400

9+10=

19

400

5-3=

2

400

4x3=

12

400

1/23456789

23456789

400

12x+27=171

x=12

500

400+700=

1100

500

36-6=

30

500

7x3=

21

500

10/63

6R3

500

4x-71=29

x=25