how do you find the percent form for the unshaded parts of each model?
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how do you find the percent form for the unshaded parts of each model?
how do you find the percent form for the unshaded parts of each model?
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The box below shows this for a simple grid, but it works the same way for anything: children in a class, prices, pebbles on the beach, and so on.
Visualising Percentages
The grid below has 100 cells.
Each cell is equal to 1% of the whole (the red cell is 1%).
Two cells are equal to 2% (the green cells).
Five cells are equal to 5% (the blue cells).
Twenty five cells (purple cells) are equal to 25% of the whole or one quarter (¼).
Fifty cells (yellow cells) are equal to 50% of the whole or half (½).
How many unshaded (white) cells are there? What is the percentage of unshaded cells?
Answer: There are two ways to work this out.
Count the white cells. There are 17 of them. Out of 100 cells, 17% are therefore white.
Add up the number of other cells, and take them from 100. There is one red cell, two green, five blue, 25 purple, and 50 yellow. That adds up to 83. 100−83 = 17. Again, out of 100 cells, 17 are white, or 17%