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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?

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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?

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What Number?

I am less than 25. My ones digit is twice my tens digit. My digits add up to an even number.

Two Spinners

Stage: 1 Challenge Level: Challenge Level:1

There are two spinners. The first spinner shows 10s and the second spinner shows 1s.

When you spin the two spinners, the numbers can be combined. For example, if the spinners land on 20 and 4, I can combine these numbers to make 24.

What two-digit numbers can you make?
What numbers can’t you make?

There some interactive spinners here that you can use for this problem.