Squares and Square Roots Quiz

12² is 144 and √144 is 12 - spin one and answer quickly.

Square it, or take the root

The wheel shows a sum: a square like 12², a root like √144, a cube or a power of two. Press SPIN! and pick the answer from four:

Knowing the squares up to 20 by heart makes a surprising amount of maths faster: roots, percentages, the area of a room, Pythagoras.

Your score

Score, In a row and Best run are kept beside the wheel. Start again puts the score back to zero:

Four groups

Squares and square roots are on the wheel when it opens. Add the cubes to 10³ and the powers of two to 2¹² – the numbers every computer counts in: 256, 1024, 4096:

How to learn them

  1. Start with one group.
  2. Open Options and tick Take the ones I got right off the wheel.
  3. Spin until the wheel is empty – what is left at the end is what you do not know yet.