Add and Subtract Unlike Fractions
Add and Subtract Like Fractions
Math Vocabulary
Steps for Solving
Solve with Mixed and Whole Numbers
100

2/6 + 4/5

34/30 OR 17/15

100

3/6 + 1/6

4/6

100

A mixed number is 

sum of a whole number and a proper fraction

100
If you were looking at the number set 4, 8 what numbers do you start with when finding the least common multiple? 

4, 

8,

100

1/12 x 9

9/12

200

2/5 + 2/10

10/50 or 1/5

200

5/6 - 2/6

3/6 or 1/2

200

What is an improper fraction?

An improper fraction is a fraction where the numerator (top number) is larger than the denominator (bottom number). 

200

What is the first step to solve unlike fraction addition?

The first step is to find the Least Common Multiple

200

2 x 7/8

4/3 or 1 1/3


300

5/7 + 2/6

16/42 or 8/21

300

17/33 - 12/33

5/33

300

What is an LCM?

It is simply the smallest of the common multiples between a set of numbers. 

300

What are the steps of the MAD method?

Multiply, ADD, (keep the) denominator 

300

5 2/3 x 3 x 7 

51/21 or 2 9/21 or 17/7

400

11/12 - 2/6

42/72 or 7/12

400

324/500 - 175/500

149/500

400

What is are unlike fractions?

Fractions with different denominators. 

400
When multiplying fractions do you multiply both the denominators times both the numerators across or demotivator times denominator and numerator times numerator?

Demotivator times denominator and numerator times numerator.

400

2 1/2 x 2 1/4

45/8

500

10/20 - 1/2

0, why? 

500

438/500 + 62/500

500/500 or 1 whole 

500

What is the difference between a fraction and whole number?

A fraction is part of a whole number. A whole number is not missing any parts. 

500

When adding mixed numbers with unlike denominators, what method do you use and why?

You can use the mad method because it is the first step to converting to improper fraction. 
500

4 2/6 x 6 3/7

585/21 or 27 6/7

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