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2013-2014
Year 13
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13C/Ma2 Calendar 2013-2014
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Getting Three
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2012-2013
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Year 13
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13A/Ma1 Calendar 2012-2013
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7a/Ma5 Calendar 2012-2013
The four 4s challenge
Can you make all the numbers from 1 to 20 using just four 4s and mathematical operations?
How far can you go? 30, 40, 50, ...... 100?
Examples
1 = (4+4) / (4+4) = 8 / 8 = 1
2 = (4x4) / (4+4) = 16 / 8 = 2
3 = (4+4+4) / 4 = 12 / 4 = 3
4 =
5 =
6 =
.
.
.
16 = 4+4+4+4
.