Number Puzzle

Free interactive math game: Number Puzzle — I'm thinking of a.... Part of the Special Games 🚀 category on MathKite.

Example problems

Taken from the generator that powers this exercise. A fresh set appears every time the page is opened, and the printable worksheet holds ten of them.

  1. I'm thinking of a number. If you multiply it by 6 and add 14, you get 68. What is the number?
  2. I'm thinking of a number. If you multiply it by 6 and subtract 3, you get 27. What is the number?
  3. I'm thinking of a number. If you multiply it by 2 and subtract 2, you get 6. What is the number?
  4. I'm thinking of a number. If you multiply it by 4 and subtract 7, you get 1. What is the number?

About this exercise

Puzzles where a number has to be worked out from clues.

How to solve it

Use each clue to narrow the possibilities, then check the survivor against every clue.

Worked example

A two-digit even number under 20 with digits summing to 9 must be 18.

Common mistake

Stopping at the first number that fits one clue. Every clue has to hold at once.