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# FRACTIONS

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by

## Samantha Michael

on 24 November 2013

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#### Transcript of FRACTIONS

FRACTIONS
frac·tion
Noun
Definition: A part of the whole.
Pieces of a Chocolate Bar
How many pieces of chocolate do you see?
Fractions
FRACTIONS
DECIMALS
RATIOS
PERCENTS
CHAPTER 12
Benchmark Fractions
1/4 = 0.25 = 25%
2/4= 1/2 = 0.50 = 50%
¾ = 0.75 = 75%
1 = 1.00 = 100%
½
The numerator
The Denominator
The Part
The Whole
Write these down and memorize them!
6 = Whole
6 pieces makes up 1 whole chocolate bar
If Miss Samantha eats one piece of the chocolate bar and wants to represent it as a fraction, how should she write it?

1 = Part
6 = Whole
If Miss Samantha eats 1 piece of the chocolate bar
1
6
and
Mrs McKergow eats 2 pieces of the chocolate bar
2
6
How do we calculate how much we ate?
1 2 3
6 6 6
+
=
When the denominator is the same, you add the numerators and leave the denominator alone.
Is there another way to write ?
3
6
3 1
6 2
Equivalent Fractions
=
They have the same value, even though they may look different.
Why?
1 2 3
2 4 6
1 2
2 4
=
=
x 2
x 2
With different denominators
How much pizza has been eaten?
1 1
2 6
+
How can we add these fractions if they don't have the same denominator?
We need to find the common denominator for

2 and 6
We need to make the denominators the same!
How??
12
Let's make a new pizza with 12 pieces!
Turn to page 354.
8 4 2
12 6 3
=
=
Full transcript