Multiplying and Dividing Fractions

PART ONE:

PART TWO:Multiplying and

Dividing Decimals

Multiplying and Dividing FractionsWHAT I NEED TO KNOW:

• 6.3.A - Recognize that dividing by a rational number and multiplying by its reciprocal result in equivalent values.

• EXAMPLE : 24 is the same as 24 x

• SOLVE:

1. x 20 = ______________ ( Hint – what is ¼ of 20??)

2. x 88 = ______________

3. 36

PART

ONE:

“OF” means “MULTIPLY”

6.3.B Determine, with and without computation, whether a quantity is increased or decreased when multiplied by a fraction (including values greater than or less than

one.)• EXAMPLE : Will the product of × 6 be less than 6 or greater

than 6?

The product will be less than 6 because is less than 1. × 6 =

1. If you multiply 6 by will the product be greater or less than 6?

2. If you multiply 6 by will the product be greater or less than 6?

6.3.E Multiply and divide positive rational numbers

fluently

REMEMBER:

• Write whole numbers

as a fraction

• Turn mixed numbers

into improper

fractions.

• Simplify first if you

can.

Example: 3 x 4 = x =

Multiplying and Dividing DecimalsWHAT I NEED TO KNOW:

PART TWO:

Additional Practice: dividing by decimals