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.