A Maths Poem

Is it a decimal or is it a fraction,
Should I divide or use subtraction?

Can anyone tell me what is this shape,
Do we use a ruler or maybe a tape?

One hundred centimetres make one metre,
How many millilitres to a litre?

Push the buttons on a calculator,
Teacher shouts ‘Use your brains!’ – you’ll need them later.

Three times six, find the factor,
(But not using a protractor)