Number Breakers
Odds & Evens
Operations
Math Around Us
Math Riddles
100

Break 8 into two parts, but neither number can be 1.

2 + 6

3 + 5

4 + 4

100

Find the odd number: 0, 14, 17, 20

17

100

Alice has 30 stickers. She gave some to a friend & has 14 left. How many did she give?

16 (Bonus! Equation: 30 - x = 14 => x = 16)

100

I am thinking of a shape. You see me on a stop sign.

Octagon

100

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

7 (Seven)

200

Break 9 into three parts. At least one part must be bigger than 5.

6 + 2 + 1

7 + 1 + 1

200

Which is bigger: the largest odd number under 10 or the largest even number under 10?

Odd (9)

200

You found 8 shells at the beach. You pick up 13 more, then give 9 to your friend. You keep?

12 (8 + 13 = 21, 21 - 9 = 12)

200

In a row, of 12 chairs, there's 3 red chairs, 2 blue chairs, 3 red chairs, 1 blue chairs, 3 red chairs,… What color comes next?

None

200

I am a number between 10 and 20. If you subtract 10 from me, you get 5. Who am I?

15 (Fifteen)

300

Imagine you have to break 6 candies into 3 bags any way you want. How many candies are in each bag?

2 + 2 + 2

4 + 1 + 1

3 + 2 + 1

300

True or False: If you add two odd numbers, the result is always odd.

False

300

Fill: 7 _ 5 = 2; 7 _ 4 = 11

Minus (-); Plus (+)

300

You have 3 dimes and 4 nickels. How much money do you have?

50 cents (3 × 10 + 4 × 5) =1/2 dollar

300

I start at 2 and keep adding 3. I am less than 20. What are the numbers?

2, 5, 8, 11, 14, 17

400

A clown has 7 balloons. He gives some to a dog, some to a cat, and keeps the rest. How should he split it?

Dog (2) + Cat (3) + Clown (2)

Dog (1) + Cat (4) + Clown (2)

400

If you put 1 to 10 then gets 9. True or false?

True, in roman numerals

400

Balance the Equation: 2 × _ + 5 = 25 - 6

7 (Seven)

400

Short hand on 4, long hand on 12. What's the time?

4:00 am or pm

400

I have 4 sides. Two sides are longer than the other two. I have 4 right angles.

Rectangle

500

You are a chef with 10 cookies. You must give them to 4 friends. You can split the cookies however you want.

Example: 4 + 3 + 2 + 1

500

I am a two-digit odd number. If you reverse my digits, I become even. What am I?

21 → 12

500

Solve: x + y = 14; y + z =16; x + z = 12

x = 5

y = 9

z = 7

500

What has more than 50 hearts, but no other organs?

Deck of Cards

500

I am a three-digit number. My hundreds digit is 2, my tens digit is double the ones digit, and the sum of all digits is 8.

242 (2 hundreds + 4 tens + 2 ones = 8)