Unformatted text preview: Fractions XIII
Fractions
Multiplication of Whole
Multiplication
Numbers
Numbers
by Monica Yuskaitis Times You Would Multiply a
Fraction Times a Whole Number
Fraction
You walk a 4 mile route halfway.
½ of 4 or ½ x 4
You walk a ¾ mile route twice.
2x¾ Times You Would Multiply a
Fraction Times a Whole
Number
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 How to Find the Fraction of
a Whole Number
Whole
The first thing to remember is “of”
means multiply in mathematics. of = x How to Find the Fraction of
a Whole Number
Whole Step 1  When you see a fraction
problem you know when you read “of”
in the problem you multiply. 1 of 46
x
2 How to Find the Fraction of a
Whole Number
Whole Step 2 – Change your whole number to
a fraction by adding a one underneath. 1 x 46
2
1 How to Find the Fraction of a
Whole Number
Whole Step 3 – Multiply your numerators
straight across. 1 x 46 = 46
2
1 How to Find the Fraction of a
Whole Number
Whole Step 4 – Then multiply your
denominators straight across. 1 x 46 = 46
2
1
2 How to Find the Fraction of a
Whole Number
Whole Step 5 – Simplify your answer. In this
case we change an improper fraction to a
mixed number or a whole number. 23
1 x 46 = 46 2)46
2
1
2 Multiply and Simplify
Multiply 1 of 36 = 36 12
x 1 3 3)36
3 Multiply and Simplify
Multiply 3
1 of 18 = 18
x
6)18
6
16 Multiply and Simplify
Multiply 3
38 3 of 9 = 27
x
8
1 8 8)27
24
3 Multiply and Simplify
Multiply 2
58 7 of 6 = 42
x
8
1 8 8)42
40
2 ÷2 = 51
58 ÷2
2
4 Multiply and Simplify
Multiply
You’re really
getting this! 4
18 1 of 12 = 12
x
8
1 8 8)12
8
4 ÷4 = 11
18 ÷4
4
2 Credits
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 Fall '11
 BrotherRaymond
 Division, Fraction, Elementary arithmetic, Natural number

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