Math Riddles
Order of Operation
Algebra Name
100

John father is 3 times his age. His brother Mark, is 2 years older than John. If John dad is 33 years old, how old is Mark.

Mark is 13 years old

100

Solve:

2 x3 + 20 - 4

22

100

Find a:

a + 2= 22

a = 10

200

Mom and dad have four daughters, and each daughter has one brother. How many people are in the family?

7

because the daughters share the same brother

200

Solve:

52 - 22 - 5 + 2

18

200

A chocolate bar costs A cents and a drink costs B cents. Write down an expression for the total cost of 3 bars chocolate bars and 2 drinks.

3A  + 2B

300

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation.

Answer: 2+5= 3+4

Because 2 +3+4+ 5= 14 and half of 14 is 7. Therefore, you are going to need 7 on both side of the equal sign.



300

Solve:

(5/25)/(3/15)

1

300

Simplify the following:

4m2+5+2m + 20 m −1 -2 -3.

4m2+22m -1

400

Add this number with any other number and you will always get the same answer. What’s the number?

Examples

50+0=50

5+0 = 5

400

Solve

22 / 2 + (2)

4


400

Brian is a window cleaner. He uses the following formula to calculate the amount to charge his customers:

Charge =$50+4n + 3n2

Where n is the number of windows a house has.

If a house has 6 windows, how much would Brian charge?

50 + 24 + 3(36)= 182

500
3(103) -20 + (90/3)

3010

500

The formula for changing degrees Celsius (C) to degrees Fahrenheit(F) is: 

F =( 9C / 5) + 32

Find C

C= ( 5(F -32) )/9

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