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 Percentages are simply another way of expressing hundredths.

'Percent' means 'out of a hundred'.

 

So 1% = 1/100 = 0.01

10% = 10/100 = 0.10 = 0.1

20% = 20/100 = 0.20 = 0.2

 

43% = 43/100 = 0.43

 

Remember that 50% and 5% are very different:

50% = 0.50 = 0.5

5% = 0.05

 

A method

When we convert from a percentage to a decimal, we are actually dividing by 100.

So...

47% = 47 ÷ 100 = 0.47

7% = 7 ÷ 100 = 0.07

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