 # PERCENT DECIMALS FRACTIONS.

## Presentation on theme: "PERCENT DECIMALS FRACTIONS."— Presentation transcript:

PERCENT DECIMALS FRACTIONS

Sometimes we need to represent the same amount in different ways.
For example, there are a number of different ways we could represent one dollar.

One dollar could be: 1 loonie 4 quarters 10 dimes

The ability to represent the same amount in different ways is important for mathematical operations as well. Converting between the three fundamental forms (decimal, percent, fraction) is where we will begin our study.

Suppose you scored 15 out of 20 on a quiz.
= 0.75 This is the fraction form of your result To convert to percent, multiply the decimal by 100 0.75 X 100 = 75% To convert to decimal, perform the division 15 / 20. You may use a calculator for these if you need to.

A few more examples: 18 20 = 0.9 = 90% (divided) 13 16 = 0.8125 =
(Multiplied by 100%) 13 16 = 0.8125 = 81.25%

Convert the following (try them first, then click to see the answer)
Fraction Decimal Percent ? 75 100 ? 0.75 75% 3 4 = Fully reduce all fractions!!!

? ? ? Convert the following Fraction Decimal Percent 3 15 0.2 20% 1 5
=

? ? Convert the following Fraction Decimal Percent 45 100 0.45 45% 9
20 =

Convert the following Fraction Decimal Percent ? ? 3 7 0.43 43%

? ? ? Convert the following Fraction Decimal Percent 122 100 1.22 122%
61 50 ? =

See Sheet

Remember: Fractions represent part of a whole.
A Fraction is a division statement

5 1 7 . 3 7 9 For Decimals: ones tens tenths hundreds hundedths
ones tens tenths hundreds hundedths thousandths

Percent (out of 100) 33% = 33 / 100 79% = 79 / 100 Putting it all together….