To compare masses using non-standard units

Maths

Estimate how many cubes would weigh the same as this mobile phone.

If I had 20 cubes on one side of the balance scales, how many would I need to on the other side to balance the scales?

Estimate how many marbles, you would need to balance the scales with a teddy bear on.

The coins and the clock have the same mass.

Select the correct answer for what the scale is showing.

Select the correct answer for what the scales are showing.