# Maths number stairs coursework.

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Introduction

Maths number stairs coursework 91 92 93 94 95 96 97 98 99 100 81 82 83 84 85 86 87 88 89 90 71 72 73 74 75 76 77 78 79 80 61 62 63 64 65 66 67 68 69 70 51 52 53 54 55 56 57 58 59 60 41 42 43 44 45 46 47 48 49 50 31 32 33 34 35 36 37 38 39 40 21 22 23 24 25 26 27 28 29 30 11 12 13 14 ...read more.

Middle

The shape that I will be investigating is a simple stair shape. I will fist place this shape at random points on the grid and add up the totals of the numbers in the square. The position of the shape on the grid will be known by the number in the square at the top of the number stair. For example S45. Now I will work out the totals of the numbers in the number stair from random positions in the grid. ...read more.

Conclusion

So if I take S91we know that S91= 91 X 81 82 X+10 X+11 71 72 73 X+20 X+21 X+22 I will add up the X's and the numbers and this should form an equation that I can test out. 6x-76 If this equation is correct, when I put in a familiar stair total suck as S91, which we all know is 470, and then the two answers will be the same. 6x91-76=470 Now I have found an equation that can be used to find the stair total just by using the stair number. ...read more.

This student written piece of work is one of many that can be found in our GCSE Number Stairs, Grids and Sequences section.

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