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Twenty Divided Into Six

Age 7 to 11
Challenge Level Yellow starYellow star
Primary curriculum
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Twenty Divided Into Six printable sheet

Katie had a pack of twenty cards numbered from $1$ to $20$.

20 cards numbered from 1 to 20.

She arranged the cards into six piles. 

The numbers on the cards in each pile added to the same total.

What was the total and how could this be done? Are you curious enough to find out?

 

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Investigate the different shaped bracelets you could make from 18 different spherical beads. How do they compare if you use 24 beads?

Sweets in a Box

How many different shaped boxes can you design for 36 sweets in one layer? Can you arrange the sweets so that no sweets of the same colour are next to each other in any direction?

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The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.

NRICH is part of the family of activities in the Millennium Mathematics Project.

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