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  • Early Years Foundation Stage

Arranging Additions and Sorting Subtractions

Age 5 to 7
Challenge Level Yellow star
Primary curriculum
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Arranging Additions and Sorting Subtractions printable sheet

There are four addition calculations hidden below. 

Your challenge is to put them in order, from easiest to hardest. Try to do this without actually calculating each answer if you can.

Click on 'Show' to see them.

42 + 47

42 + 18

42 + 39

42 + 3

How did you decide the order? 

We would love to hear the reasons for your final order.

You might like to do exactly the same with the set of four subtraction calculations hidden below.

Click on 'Show' to see them.

26 - 18

26 - 7

26 - 3

26 - 10

Create a set of four additions or four subtractions yourself, which you think could be put in order from easiest to hardest.
Give them to someone else to order.
Do they agree with your final order? Why or why not?

You may find it useful to print off this sheet, which contains the two sets of calculations. You could cut them up into two sets of four cards.

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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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