The aim is to make square domino loops, like the one in the picture, from 4 dominoes matching the fractions, decimals and percentages. Start with any domino and find 2 other dominoes to match the ends of the first domino. For example, the [3/10 and 10%] domino matches with 30% at one end and 1/10 at the other end. Then 9/10 matches with 90% and 3/4 with 75% to complete the square. This uses 4 of the dominoes below. Can you use all 16 dominoes to makeĀ 4 domino loops?









Click here for the AIMSSEC Notes for Teachers.

This problem is adapted from the NRICH task Doughnut Percents with permission of the University of Cambridge. All rights reserved.

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