Mental Math
Real World Math
Math Puzzles & Riddles
100

The sum of 75 and 26.

What is 101?

100

The amount of change you would get from a $10 bill after buying a $6.47 item.

What is $3.53?

100

The next number in the pattern: 2, 4, 8, 16, __.

What is 32?

200

The product of 8 & 7.

What is 56?

200

The number of pizzas needed to serve 24 people if each person eats 3 slices and each pizza has 8 slices.

What is 9 pizzas?

200

The number that is a multiple of both 3 and 5 and comes after 20.

What is 30?

300

The quotient of 144 divided by 12.

What is 12?

300

The total cost of 3 shirts if each one costs $12.62


What is $37.86?

300

I am a number. Double me and add 6, you get 20. What number am I?

What is 7?

400

The least common multiple of 6 & 8.

What is 24?

400

The distance a car travels in 3 hours if it moves at a constant speed of 65 miles per hour.


What is 195 miles?

400

The value of the missing number: 2.4 + ___ = 5.7

What is 3.3?

500

The greatest common factor of 36 & 48.

What is 12?

500

The perimeter of a rectangle that is 9 inches long and 6 inches wide.

What is 30 inches?

500

I am a number between 1 and 100. I am a multiple of 9 and a multiple of 6. I am also an even number. What number am I?

What is 18?