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

I spent $720 of my paycheck and have $550 left over.  How much is my paycheck?

What is $1270

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

49 - x = 31

What is 18

300
32 = 5 + x
What is 27
300
31 = x - 24
What is 55
300

0.3x = 0.54

What is 1.8

300
x = 87 / 3
What is 29
300

84÷x = 14

What is 7

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

I split the money from my garage sale between me and my friends.  Each of us got $63.20 and we sold $379.20 worth of stuff.  How many friends do I have?

What is 5

500

23.1=x+9.2

x=13.9

500

x - 1/9 = 5/6

x = 17/18

500

(7/8)x = 7/10

Don't forget to simplify!

x = 4/5

500

x÷4/5 = 45

x = 36

500

8 people get on the bus, then half get off, then 15 get on.  If there are 20 people on the bus now, how many were on the bus to begin with?

2 people

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