Addition
Subtraction
Multiplication
Division
Challenge
100
x + 8 = 24
What is 16
100
x - 12 = 1
What is 13
100
3x = 42
What is 14
100
x / 8 = 7
What is 56
100

(1/2)x=5 (HINT: THIS MEANS 1/2 'OF' SOME NUMBER =5)

What is 10

200
28 + x = 43
What is 15
200
x - 49 = 23
What is 72
200
12x = 48
What is 4
200
x / 25 = 11
What is 275
200

(1/3)x=4 (HINT: THIS MEANS 1/3 'OF' SOME NUMBER =4)

What is 12

300
32 = 5 + x
What is 27
300
31 = x - 24
What is 55
300
112 = 14x
What is 8
300
x = 87 / 3
What is 29
300

(2/3)x=6 (HINT:  IT WILL HAVE TO BE HIGHER THAN 6)

What is 9

400
81 = x + 49
What is 32
400
x - 43 = 55
What is 98
400
256 = 16x
What is 16
400
23 = x / 12
What is 276
400

(3/4)x=24 (HINT:  IT WILL HAVE TO BE HIGHER THAN 24)

What is 32

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