Fractions XIII Multiplication of Whole Numbers

1
Fractions XIIIMultiplication of Whole Numbers

• by Monica Yuskaitis

2
Times You Would Multiply a Fraction Times a Whole
Number

• You walk a 4 mile route halfway.
• ½ of 4 or ½ x 4
• You walk a ¾ mile route twice.
• 2 x ¾

3
Times You Would Multiply a Fraction Times a Whole
Number

• A 12 ticket to the magic show is on sale for 2/3
  of the original price.
• 2/3 of 12 or 2/3 x 12

4
How to Find the Fraction of a Whole Number

• The first thing to remember is of means
  multiply in mathematics.

of
x

5
How to Find the Fraction of a Whole Number

• Step 1 - When you see a fraction problem you
  know when you read of in the problem you
  multiply.

1
x
of 46
2
6
How to Find the Fraction of a Whole Number

• Step 2 Change your whole number to a fraction
  by adding a one underneath.

1
x 46
2
1
7
How to Find the Fraction of a Whole Number

• Step 3 Multiply your numerators straight
  across.

x 46
1
46

1
2
8
How to Find the Fraction of a Whole Number

• Step 4 Then multiply your denominators
  straight across.

x 46
1
46

1
2
2
9
How to Find the Fraction of a Whole Number

• Step 5 Simplify your answer. In this case we
  change an improper fraction to a mixed number or
  a whole number.

23
x 46
1
46
2)

46
1
2
2
10
Multiply and Simplify
12
36
1
36
of
x

3)
36
1
3
3
11
Multiply and Simplify
3
18
1
18
of
x

6)
18
1
6
6
12
Multiply and Simplify
3
9
3
27
3
8
of
x

8)
1
8
8
27
24
3
13
Multiply and Simplify
2
6
7
42
5
8
of
x

8)
1
8
8
42
40
2
2
1


5
5
2
8
2
4

14
Multiply and Simplify
Youre really getting this!
4
12
1
12
1
8
of
x

8)
1
8
8
12
8
4
4
1


1
1
4
8
4
2

15
Credits
Clipart from Microsoft Clip Gallery located on
the Internet at http//cgl.microsoft.com/ clipgal
lerylive/default.asp