Simplifying fractions
Division
Multiplication
Subtracting and adding negative numbers
Square root
100

2/8

1/4
100

12%4

3

100

3x5

15

100

-2 - 3

-5

100

16

4

200

16/32

1/2

200

66%6

11

200

7x6

42

200

-4 + 9

5

200

49

7

300

42/420

1/10

300

64%8

8

300

9x8

72

300

-14 - 4

-18

300

81

9

400

121/484

1/4

400

168%12

14

400
12x7

84

400

-24 + 7 

-17

400

121

11

500

121/363

1/3

500

288%24

12

500

14x11

154

500

-49 + 17

-32

500

144

12