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Foundation to Year 2: 6 beads

If you put three beads onto a tens/units abacus you could make the numbers 3, 30, 12 or 21.

Explore the numbers you can make using six beads.

First I drew some abacus on a piece of paper.

Next I drew the beads and wrote the number it made underneath.

I started with no beads on the Tens column and then increased it by one each time and at the same take taking one bead off the units column each time.

I got seven numbers. They were 6,15,24,33,42,51 and 60.