Fun Math Brain Teasers

A farmer has seventeen sheep. All but nine of them die. How many sheep does he have left?

• 17

• 8

• 7

• 9

If 7 is transformed into 13 and 11 is changed to 21 then what does 16 become?

• 17

• 31

• 35

• 15

A boy is 2 years old, his brother is half as old as him. When the first boy is 100, how old will his brother be?

• 82

• 75

• 99

• 92

A farmer has seventeen sheep. All but nine of them die. How many sheep does he have left?

• 10

• 8

• 17

• 9

Give the place value of 5 in the number 254,879.

• 500,000

• 50,000

• 5,000

• 5

How many centimeters are in a meter?

• 10

• 100

• 1000

• 10000

Which of these numbers are prime numbers: 7, 8, 9, 10, 11, 12, 13, 14?

• 8, 10, 14

• 8, 9, 10

• 7, 8, 9

• 7, 11, 13

You are 9 years old and your dad is 47. How old will your dad be when you are 21?

• 52

• 47

• 59

• 65

What are the next three numbers in this series: 14, 21, 28, 35,...

• 41, 47, 58

• 42, 49, 56

• 43, 50, 57

• 45, 52, 63

What is a greater distance: 10 inches or 10 centimeters?

• 10 inches

• 10 centimeters