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# Fractions, decimals & percentages

Year 6 Online resource for teaching mathematics FRACTIONS,DECIMALS & PERCENTAGES
by

## Janai Gardiner

on 13 September 2013

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#### Transcript of Fractions, decimals & percentages

What are some real life examples of Fractions, decimals & percents you can think of?
Some Real Life Examples

FRACTIONS
DECIMALS
Percentages
Core
A fraction is a part of a whole
ARE ALSO PARTS OF NUMBERS .....

THE DECIMAL POINT SEPARATES THE WHOLE FROM THE PART .....
A percent or percentage is a number out of 100.
Fractions , Decimals & Percentages
Lesson- Planning a Park

MONEY
COOKING
SPORTS
Slice a pizza and you will have a fraction.....
What is part of a whole ?

The top number tell you how many pieces you
HAVE
The bottom number tells you how many slices the pizza was

CUT INTO
but .... we don't always
work with wholes.....
What is a whole?
100% is a whole

1.00 is a whole

4 / 4 pieces is a whole
It has 2 parts :
NUMERATOR
DENOMINATOR

We call the top number the
Numerator
, it is the number of parts you have.
We call the bottom number the
Denominator
, it is the number of parts the whole is divided into.

Numerator

Denominator

3
6
Numerator
Denominator
Part
Whole
WHAT FRACTION OF
THESE CIRCLES ARE
GREEN?

1 . 34

WHOLES PARTS

whole
hundreths
Equivalent Fractions

Some fractions may look different, but are really the same,
for example:
* It is usually best to show an answer using the simplest fraction ( 1/2 in this case ). That is called Simplifying, or Reducing the Fraction
your math book .... the answer will be revealed at the end of the lesson .

You can add fractions easily if the bottom number (the denominator) is the same:
another example:

SUBTRACTING FRACTIONS
3 simple steps to subtract fractions

Step 1.
Make sure the bottom numbers (the denominators) are the same
Step 2.
Subtract the top numbers (the numerators). Put the answer over the same denominator.
Step 3.
Simplify the fraction.
http://www.kidsmathgamesonline.com/numbers/percentages.html
PLAN A PARK

DECIMALS

The decimal point separates the whole number from parts
.1 OR .10

BOTH IMAGES ARE EQUAL TO
ONE - TENTH
WHAT DECIMAL IS REPRESENTED BY THIS MODEL ?
40 out or 100

= 40%
WHAT PERCENTAGE OF PLANES ARE SHADED RED?
REVIEW

FRACTION

DECIMAL

PERCENT
Test your fraction, decimal & percentage knowledge ..... Click the link below:
1
2
0.5
50%
I'm going to turn this 50 cent piece into a fraction, decimal and percent.....
Now it's your turn! In your math book turn this 20 cent piece into a fraction, decimal and percent....
Using the 100 grid paper provided ...your now going to become a landscape architect and create your own park ......
THE PARK MUST INCLUDE:

Playgrounds
Grass
Trees
Water
Sporting grounds