Math Riddles

How many times can you subtract 10 to a hundred?

• 10 times

• twice

• once

• 5 times

Answer explanation

you can only subtract 10 by a hundred once. the second will be subtracted to ninety.

Tags

CCSS.1.NBT.C.5

When my father was 31, I was 8. Now he is twice as old as me. How old am I?

• 34 years old

• 43 years old

• 23 years old

• 33 years old

Tags

CCSS.8.EE.C.7B

A farmer has 17 sheep and all but 9 died. How many were left alive?

• 8

• 17

• 11

• 9

Answer explanation

17 sheep and all died but 9.

So 9 animals were left alive.

Tags

CCSS.2.OA.A.1

If there are 7 bears in a room and each hug each other once and only once, how many total bear hugs were made all together?

• 21 total hugs

• 49 total hugs

• 35 total hugs

• 28 total hugs

Answer explanation

Tags

CCSS.HSF.BF.A.2

Divide 30 by 1/2 then add 10. What is the answer?

• 70

• 25

• 30

• 10

Answer explanation

When dividing with a fraction, we multiply it to its reciprocal.

Tags

CCSS.7.NS.A.3

Which three numbers have the same answers whether they are multiplied or added?

(a)  

Answer explanation

Tags

CCSS.3.OA.B.5

What number do you get when you multiply all the numbers in the cellphone keypad?

(a)  

Tags

CCSS.5.NBT.A.2

A man walks in the room and saw on the bed were 3 dogs, 2 ducks and 1 cat. How many legs are on the floor?

(a)  

Answer explanation

2 legs of the man and 4 legs of the bed.

Tags

CCSS.3.OA.D.8

The number of jelly bean double in every minute. If the jar was full of jelly beans after an hour, how many minutes did it take to make the jar half-full?

(a)  

Answer explanation

The jar was full after an hour. Since the jelly is always doubled every minute. the jar was half-full a minute before an hour.

Tags

CCSS.HSF.LE.A.4

There are 2 ducks in front of 2 other ducks. There are 2 ducks behind 2 other ducks. There are 2 ducks beside 2 other ducks. How many ducks are there?

(a)  

Answer explanation

There are only four. They are in square position.

Tags

CCSS.2.OA.A.1