Comparing and Estimating

This activity challenges you to decide on the 'best' number to use in each statement. You may need to do some estimating, some calculating and some research.

Can you place these quantities in order from smallest to largest?

A simple visual exploration into halving and doubling.

How can you arrange the 5 cubes so that you need the smallest number of Brush Loads of paint to cover them? Try with other numbers of cubes as well.

What do you think is going to happen in this video clip? Are you surprised?

Cut differently-sized square corners from a square piece of paper to make boxes without lids. Do they all have the same volume?

Mandeep's watch loses two minutes every hour. Adam's watch gains one minute every hour. Can you work out what time they arrived at the airport?

Can you draw a square in which the perimeter is numerically equal to the area?

The challenge for you is to make a string of six (or more!) graded cubes.

During the third hour after midnight the hands on a clock point in the same direction (so one hand is over the top of the other). At what time, to the nearest second, does this happen?