HOW TO MULTIPLY FRACTIONS (

Beginning to multiply simple fractions:

SECTION ONE: SIMPLE FRACTIONS

Step One: Simplify diagonally, look at opposite corners and simplify numbers down to where the only factor they have in common is 1 . Cross out and rename as you work.

3 5

__ X __

15 12

3 1 5 1 Divide both 5 & 15 by 5, their GCF, to get new numbers

___ X ___

15 3 12 4 Divide both 3 and 12 by 3, their GCF, to get new numbers.

Step 2: Now that we have simplified as much as possible, we multiply the new numbers straight across.

3 1 5 1 1

___ X ___ = _____

15 3 12 4 12

If the answer is not fully simplified, we would simplify it again.

Simplifying before multiplying : Similar numbers cancel out.

2 5

__ X ___

5 15

2 5 1

__ X ___

5 1 15

You can simplify similar diagonal numbers, they cancel out and are rewritten as 1's

2 5 1 2

__ X ___ = _____

5 1 15 15

If the answer is not fully simplified, we would simplify it again.

An example for simplification still needed after simplifying diagonally and multiplying:

2 2 Simplify 2 2 1 2 1

__ x ___ ___ X ____ = _____ = _____

8 5 8 4 5 20 10

We simplified our first answer 2/20 because they were even and still had a greatest common factor other than the number 1. Use all the rules for simplifying you have been taught.

**Some problems can not be simplified diagonally or cancel out. In these cases, multiply straight across. Remember to simplify final answer as needed

________________________________________________ Whole numbers are wrote over 1 and to create a fraction to multiply with another fraction:

Example -- 8 X 1/2 would be wrote as 8 1

__ X ___

1 2

and then complete the problem as usual.

__)__**KEEP SCROLLING DOWN AS YOU READ, THIS IS A LONG PAGE**Beginning to multiply simple fractions:

SECTION ONE: SIMPLE FRACTIONS

Step One: Simplify diagonally, look at opposite corners and simplify numbers down to where the only factor they have in common is 1 . Cross out and rename as you work.

3 5

__ X __

15 12

3 1 5 1 Divide both 5 & 15 by 5, their GCF, to get new numbers

___ X ___

15 3 12 4 Divide both 3 and 12 by 3, their GCF, to get new numbers.

Step 2: Now that we have simplified as much as possible, we multiply the new numbers straight across.

3 1 5 1 1

___ X ___ = _____

15 3 12 4 12

If the answer is not fully simplified, we would simplify it again.

Simplifying before multiplying : Similar numbers cancel out.

2 5

__ X ___

5 15

2 5 1

__ X ___

5 1 15

You can simplify similar diagonal numbers, they cancel out and are rewritten as 1's

2 5 1 2

__ X ___ = _____

5 1 15 15

If the answer is not fully simplified, we would simplify it again.

An example for simplification still needed after simplifying diagonally and multiplying:

2 2 Simplify 2 2 1 2 1

__ x ___ ___ X ____ = _____ = _____

8 5 8 4 5 20 10

We simplified our first answer 2/20 because they were even and still had a greatest common factor other than the number 1. Use all the rules for simplifying you have been taught.

**Some problems can not be simplified diagonally or cancel out. In these cases, multiply straight across. Remember to simplify final answer as needed

________________________________________________ Whole numbers are wrote over 1 and to create a fraction to multiply with another fraction:

Example -- 8 X 1/2 would be wrote as 8 1

__ X ___

1 2

and then complete the problem as usual.