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T-Shapes

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Downloads to date: N/A | Words: 4100 | Submitted: 05-Apr-2006
Spelling accuracy: N/A | Number of pages: | Filetype: Word .doc

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A* marked GCSE Maths coursework - "T-shapes"

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T-Total and T-Number
PART 1
We have a grid nine by nine with the numbers starting from 1 to 81. There is a shape in the grid called the t-shape. This is highlighted in the colour red. This is shown below: -

1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63
64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81
The number 20 at the bottom of the t-shape will be called the t-number. All the numbers highlighted will be called the t-total. In this section there is an investigation between the t-total and the t-number.

1 2 3 4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21 22 23 24 25 26 27
28 29 30 31 32 33 34 35 36
37 38 39 40 41 42 43 44 45
46 47 48 49 50 51 52 53 54
55 56 57 58 59 60 61 62 63
64 65 66 67 68 69 70 71 72
73 74 75 76 77 78 79 80 81
For this t-shape the
T-number is 20
And the
T-total is37
For this t-shape the
T-number is 21
and the
T-total is 42
As you can see from this information is that every time the t-number goes up one the t-total goes up five.
Therefore the ratio between the t-number and the t-total is 1:5
This helps us because when we want to translate a t-shape to another position. Say we move it to here...
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