Vocabulary
The Denominator is the top or bottom number in a fraction?
Bottom
For adding and subtracting fractions, is it easier to do this when the denominators are the same? Yes or no
Yes. It is easier.
Knowing the Prime Numbers and your Multiplication Facts will help you when working with fractions. True or False
True
What is 20/100 simplified?
1/5
What is the fastest way to solve
8 + 1/4
Slide the whole number next to the fraction!
This is like saying what is 8 + .25 = 8.25
The Numerator is the top or bottom number in a fraction?
Top
When multiplying fractions with different denominators, what do you do with the numerators and what do you do with the denominators?
You multiply the numerators together and you multiply the denominators together.
For which operations (+-x/) should you simplify a fraction into its simplest form before working it out?
Before ALL FOUR OPERATIONS +-x/
what is 4/5 x 3/7?
12/35
How would you quickly simplify this fraction?
110/210
Cross out the zeros. if the remaining numbers can't be reduced, then you have your answer.
True or False
An Improper Fraction can be changed into a Mixed Number.
True
For multiplying fractions, do the denominators need to be the same? Yes or no.
No they do not need to be the same.
When comparing fractions, do you ALWAYS have to convert fractions into decimals? Yes or no.
No, you don't ALWAYS have to but you can. You can also find the common denominator and figure it out that way.
Which is greater? 73/100 or 15/20?
15/20 because 15/20 = 3/4. 73/100 is just shy of 3/4 if you know some "famous fractions"
How can you quickly simplify then solve this multiplication problem?
4/25 x 5/16
Cross cancel! The 4 and the 16 become 1 and 4. The 5 and the 25 become 1 and 5. You're left with an easier problem = 1/20.
An example of a fraction that has an "Undefined" answer
any number over Zero
When adding or subtracting fractions, do the denominators need to be the same? Yes or No?
Yes! They always need to be the same!
Find the famous decimals that correspond to the following famous fractions: 1/4, 1/2, 3/4, 1/5 and 1/8
.25 .5 .75 .2 .125
Solve 7/16 + 2/32?
1/2
What do you need to do before you can add these together? Solve.
8 2/3 + 5/7
Split up the whole numbers and just add the fractions first. 2/3 + 5/7 = 14/21 + 15/21 = 29/21 or 1 8/21, then add in the other whole number = 9 8/21.
Which part of a fraction represents the "Part" and which part of a fraction represents the "Whole"
Part is on top of the fraction line. The Whole is on the bottom.
When dividing fractions, do you invert (flip) the first fraction or the second fraction?
The second
Find the famous decimals that correspond to these famous fractions: 1/3, 1/6, 1/9 and 1/10
.33 repeating, .166 repeating, .111 repeating, .1
How would you solve this?
3 4/5 + 2 1/5
Since the denominators are the same, we can add them first, = 5/5 or 1. Then 1+ the whole numbers = 6
Solve the following problem
4/5 x 5/12 x 3/15 x 2 x 15/2 =
The answer is 1