You may also like

problem icon

6 Beads

If you put three beads onto a tens/ones abacus you could make the numbers 3, 30, 12 or 21. What numbers can be made with six beads?

problem icon

Biscuit Decorations

Andrew decorated 20 biscuits to take to a party. He lined them up and put icing on every second biscuit and different decorations on other biscuits. How many biscuits weren't decorated?

problem icon

Writing Digits

Lee was writing all the counting numbers from 1 to 20. She stopped for a rest after writing seventeen digits. What was the last number she wrote?

Same Length Trains

Stage: 1 Challenge Level: Challenge Level:1

Matt made a train with the Cuisenaire rods. It looked like this:

light green rod, pink rod, black rod, dark green rod

Katie made one too, exactly the same length, with just white rods. Hers looked like this:

20 white rods

Can you make some trains the same length as Matt's train, with rods of just one colour?
How many different ones can you make?

You may like to use the interactivity below to help you. Click on 'Rods' to choose your rods.

Full Screen Version
If you can see this message Flash may not be working in your browser
Please see http://nrich.maths.org/techhelp/#flash to enable it.