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Multiplying Fractions
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Key Concepts:
Terms in this set (23)
Improper fraction
Numerator (top number) is bigger than the denominator (bottom number)
Mixed number
a whole number and a fraction
To multiply fractions
Multiply numerator (top number) and then multiply denominator (bottom number), SIMPLIFY
Improper fraction
Mixed number or improper fraction? 5/2
Mixed number
Mixed number or improper fraction?
Mixed number
Mixed number or improper fraction? 4 1/2
Improper fraction
Mixed number or improper fraction? 10/2
numerator, denominator
To multiply fractions: Multiply _____________ and then multiply ____________
simplify
Remember to always __________________ your answer!
Changing an improper fraction to a mixed number
Divide numerator (top number) by denominator (bottom number). Find and write down the whole number. Make the remainder the numerator. The denominator remains the same.
Changing a mixed number to an improper fraction
Multiply the whole number by the fraction's denominator. Add this number to the numerator. The answer becomes your new numerator. The denominator stays the same.
Improper fraction
When given a mixed number to multiply, you should change it to an _______________ to make it easier for you to multiply
Mixed number
If your answer is an improper fraction, you should check the directions to see if you need to change it to a ____________________.
Multiply numerators (2x5) = 10
Multiply denominators (3x4) = 12
Simplify 10/12 becomes 5/6
The answer is 5/6
Multiply 2/3 * 5/4
Divide numerator by denominator to find the whole number and remainder.
12/5 = 2 remainder of 2
The whole number is 2, remainder is 2
The remainder becomes the numerator, the denominator stays the same.
The answer is 2 2/5
Change 12/5 to a mixed number
Numerator
top number
whole number
the number without the fraction
denominator
bottom number
Multiply
...
Add
...
50
1/2 of 100
25
1/4 of 100
75
3/4 of 100 (think of quarters and $1.00)
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