## What number am I? – Prime numbers and perfect squares

Math Teaser I am a perfect square. My square root is a prime number, less than 100, and the digits of the square root add up to a perfect square. My own digits add up to a prime number.

## Reverse Calculation

Math Teaser! A number is divided by five. The result is divided by three, for a ﬁnal result of two. What was the original number?

## Steps in a mile

If I were to start a new exercise program where I double my previous day’s steps each new day, on which day of the program will I first walk a full mile? I will start with 1 step on Day 1 and all of my steps are 2 feet long. Bonus: On that day, how many steps beyond a mile […]

## 25 Cent Coin Combinations

Math Teaser How any combinations of US coins are there that add up to 25 cents?

## A Sequence

Math Teaser! If the first five terms of a sequence are 0, 2, 8, 18, 32 what would be the value of the tenth term?

## Equation Generation 3

Math Teaser Using the numbers 2,3,4,5,6, and 8 find two 3 digit numbers that add up to 1000. (There is more than one correct answer!)

## What Number am I? – Square, cube, prime digits

Math Teaser I am a 3 digit number whose product of my digits is equal to 144. Of my 3 digits, one is a cube, one is a square, and one is a prime. If the six numbers that meet these criteria are listed in increasing order, I am fifth in the list.

## What Number am I? – Combination of digits

Math Teaser I am 3 digits. My digits add up to 10. The product of my digits is 20. I am an odd number. The digit in the hundreds place plus the digit in the tens place equals the digit in the ones place. The smallest digit is in the middle.

## Football Score

In football, how many possible scoring combinations are there that would result in a team having 10 points on the scoreboard? (Ignore defensive points on PAT attempts)

## Equation Generation

Using the numbers 9, 7, 3, and 4 create an equation that equals 2.

## Two Coins

I have two US coins that combine to total 35 cents. One is not a dime. What are the coins?

## A Dice Combination Problem

If you have two 6-sided dice, numbered 1-6, how many dice combinations are there that do not include the number 5? Note that a 1 and 6 and a 6 and 1 with the two dice are counted as separate dice combinations.