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!

We're ready to start!

Turn to page 354.

8 4 2

12 6 3

=

=