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Solutions to yesterday's starter

Thank you to the following children for sharing your answers:

This solution was from William F (Cambourne)

This solution was sent in from Akshara (Cambourne)

Zoe (Hardwick) sent two different solutions

Number Pyramid Challenge

I think that the answer is 57 because it is an addition pyramid and 29+28=57.

For 100 at the top:

I put

100

50   50

25  25   25

20  5  20  5

 

Here’s another solution

               100

             27    73

          15    12     61

       7       8       4      57

Maria (Hardwick) sent this answer - did anyone else have a solution with decimals?

This is like Pascel's triangle but the other way around. 6+7=13 and 13 is on top of them. 7+9=16, 9+3=12 and so on. 29+28=57 so 57 should go at the top of the pyramid. 
 
To make 100 at the top of the pyramid you have to find 1/8 out of 100 (12.5) and that goes on the bottom row. 12.5 +12.5+25 so there are 3 twenty fives on the second row. 25+25=50 so on the last row there are 2 fifties on the second last row. 50+50=100 so 100 is at the top.
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