downsizeUsing the numbers 1, 2, 3, 4 and 5 once and only once and the symbols × and ÷  once and only once, what is the smallest whole number you can make?

Now suppose you have to use the symbol + once and the symbol ÷ twice what is the smallest fraction that you can find?

For example \(\frac{1}{4}+\frac{2}{35}= \frac{43}{140}.\)

Can you find a smaller fraction?

See the Notes for Teachers.

This problem is adapted from the NRICH task  1, 2, 3, 4, 5 with permission of the University of Cambridge. All rights reserved.

 

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One Response to Grades 4 to 6 – Downsize

  1. Manxesi Nxesi says:

    I presented the problem to my Grade 6 learners.It was very challenging. I got many answers but the last group to finish says its 114. They did it like 152/4*3=114

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