MATH BRAIN TEASERS 5th Grade

Question 1

A book has 150 pages. Every page is numbered. How many digits are used?

Accepted Answer

342

Question 2

What weighs more: a pound of iron or a pound of feathers?

Accepted Answer

weigh the same

Question 3

What is the 6th number in the sequence.... 17, 18, 21, 26, ...

Accepted Answer

42

Question 4

How old am I if 400 reduced by 2 times my age is 244?

Accepted Answer

78

Question 5

I am an odd number. Take away one letter and I become even. What number am I?

Accepted Answer

Seven

Question 6

How many days are in a non-leap year?

Accepted Answer

365

Question 7

Sandy is 5 years older than her brother. If the sum of their ages is 31, how old is Sandy?

Accepted Answer

18

Question 8

Della buys 7 boxes of straws. Each box has 135 straws. How many straws did Della buy?

Accepted Answer

945

Question 9

If tomorrow is Friday, what is the day before today?

Accepted Answer

Wednesday

Question 10

How many eggs are in a baker's dozen?

Accepted Answer

13

Question 11

Which 3 numbers have the same answer whether they’re added or multiplied together?

Accepted Answer

1,2,3

Question 12

Five cars have how many wheels altogether?

Accepted Answer

20

Question 13

What day is Halloween?

Accepted Answer

October 31st

Questions 13