Show:
Addition
Subtraction
Multiplication
Division
Challenge
100

d + 8 = 24

16

100

d - 12 = 1

13

100

3 x d = 42

14

100

d / 8 = 7

56

100

d + 8 = -12

-20

200

28 + d = 43

15

200

d - 49 = 23

 72

200

35 = d x 5

7

200

d / 25 = 11

275

200

10 - d = -14

24

300

32 = 5 + d

27

300

31 = d - 24

55

300

5 x d =140

28

300

d = 87 / 3

29

300

5x = -130

-26

400

81 = d + 49

32

400

d - 43 = 55

98

400

6 x d =360

60

400

23 = d / 12

276

400

d / -4 = -12

48