Math Riddles

Front

Add me to myself and multiply by 4. Divide me by 8 and you will have me once more. What number am I?

Back

any number

Front

There is a three digit number. The second digit is four times as big as the third digit, while the first digit is three less than the second digit. What is the number? Options: 234, 141, 575, 267

Back

141

Front

How many 9's are there between 1 and 100?

Back

20

Front

In two years I know, I'll be twice as old as five years ago, said Tom. How old is Tom? Options: 14, 10, 12, 8

Back

12

Front

What is half of two plus two?

Back

3

Front

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

Back

7

Front

If 1/2 of 5 is 3, then what is 1/3 of 10?

Back

4

Front

Does a pound of gold or a pound of feathers weigh more?

Back

Neither, they both weigh the same.

Front

What 3 positive numbers give the same result when multiplied and added together?

Back

1, 2, and 3

Front

A merchant can place 8 large boxes or 10 small boxes into a carton for shipping. In one shipment, he sent a total of 96 boxes. If there are more large boxes than small boxes, how many cartons did he ship?

Back

11 total cartons and 96 boxes