All levels

Number Line Estimation

Estimate numbers on a number line within 20, 40, 60, 80 or 100, following your profile level.

How to play

Look at the marker and the labelled ends and halfway number. Type your estimate, then choose Check estimate to see the number. Choose Next number to explore another line.

On a line from 0 to 20, a marker just before halfway could be about 8. A close estimate is useful. A grown-up can help read the numbers at the first levels.

Getting your activity ready…