# Maths

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• Created by: DGSYEAR9
• Created on: 03-02-19 09:48
How to go from fraction to percentage
Use bus stop method or scale to 100
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How to go from percenatge to decimal
Divide by 100
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Decimal to percentage
Multiply by 100
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What is the decimal multiplier for 17%
For increase. Add on to 100% and divide by 100 = 1.17. For decrease, subtract from 100% and divide by 100= 0.83
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How to do percentage increase/decrease
Times with decimal multiplier
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Find 25% of 300
Half of 300 = 150. Half of 150 = 75
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How to calculate percentage profit
Profit divided by original value x 100
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How to calculate profit
Revenue - cost
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Simple interest
The same percentage of the original amount is paid each year
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Compound interest
The interest earned is added on each year. E.g. 1000 x 1.07 to the power of 3 = £1225
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Deprecation problem
3000 x 0.85 to the power of 4...
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## Other cards in this set

### Card 2

Divide by 100

#### Back

How to go from percenatge to decimal

### Card 3

Multiply by 100

#### Back ### Card 4

#### Front

For increase. Add on to 100% and divide by 100 = 1.17. For decrease, subtract from 100% and divide by 100= 0.83

#### Back ### Card 5

#### Front

Times with decimal multiplier

#### Back 