Terminology
What is a fraction?
A part of a whole
Reduce: 2/4
1/2
Add: 1/3 + 2/3=
3/3=1
True or false: When multiplying fractions, you do NOT need a common denominator. You multiply across numerators and denominators to find the solution.
True
True or false:
To divide 3/4 by 1/2 you need to multiply 3/4 x 2/1
(the reciprocal of 1/2)
True
What is the top and bottom number of a fraction called?
The numerator on top. The denominator is on the bottom.
reduce: 21/28
3/4
Find the difference
5/9 - 2/9 =
1/3
Find the product:
3/4 x 6/7 =
9/14
Find the quotient:
3/8 ÷ 3/16 =
2
When the numerator is larger than the denominator the fraction is called what?
An improper fraction
When you reduce a fraction you are looking for the LCM or _________________to divide into the numerator and the denominator.
Lowest common multiple
Find the sum:
4/10 + 3/5 + 1/2 =
=1 1/2
Find the product:
12/13 x 26 =
24
Find the quotient:
4 ÷ 8/9 =
4 1/9 (four and one ninth)
When a term has a whole number and a fraction it is called a _________number.
Mixed number
True or False: 1/2, 4/8, 9/18, and 35/70 are all equal.
True.
Find the difference:
11 2/3 - 4 5/6 =
(eleven and two thirds minus four and five sixths)
=6 5/6 (six and five sixths)
find the product:
4 2/3 x 2 1/2 x 3=
(four and two thirds x two and one half x three)
35
Find the quotient:
3 1/8 ÷ 5 5/6 =
three and one eighth ÷ five and five sixths =
15/28
The lowest number into which every denominator can divide evenly called the...
Lowest common denominator
True or false. When doing math operations, always work the reduced fraction.
False. When adding and subtracting fractions, we need a common denominator which often requires unreduced fractions (raising to a higher terms) in order to perform the problem.
Part I.
True or False. When adding and subtracting fractions, you ALWAYS need a common denominator.
solve:
6/7 + 1/14 - 1/28=
25/28
Find the product:
2 2/15 x 5 1/4 x 7 1/2 =
(2 and two fifteenths x five and one fourth x seven and one half)
84
For a 7 1/2 hour workday, Ed makes $120. How much does he make in an hour?
$16/hr