Challenge Level

Here's a game to play with an adult!

You'll need an adult to play with.

You'll also need a number line from 1-20, like the one above. You can print some off here.

The adult chooses two numbers in this grid and either multiplies or divides them.

They then mark the answer to the calculation on the number line. You then choose two numbers and either × or ÷ , and mark that number in a different colour on the number line.

If the answer is too big or too small to be marked on the number line, the player misses a go. The winner is the person to get four marks in a row with none of their opponent's marks in between.

What good ways do you have of winning the game?

Does it matter if you go first or second?

How are you deciding which number to aim for next?

Can you find a winning strategy?

This game gives children the opportunity to estimate answers to calculations in a motivating context and gives plenty of practice in multiplication and division. Playing strategically involves higher-order thinking and the need to think ahead.

There is a classroom version of this game here.