Steps
What is the first step when solving adding and subtracting fractions with unlike denominators?
List your multiples to find a common denominator.
1/2 + 1/4
3/4
1/2 - 1/4
1/4
What is a denominator?
The number below the line in a fraction.
8 3/4 + 11 9/10
20 26/40
What is the second step when adding and subtracting fractions with unlike denominators?
Find equivalent fractions
1/6 + 2/3
5/6
2/3 - 1/6
1/2
What is a numerator?
The number above the line in a fraction.
Simplify 8/12
2/3
What is the third step when adding and subtracting fractions with unlike denominators?
Add or subtract
1/15 + 3/10
11/30
1/5 - 1/10
1/10
What does equivalent mean?
Equal in value or the same in value.
List the first five multiples of 8 and 2. Find the Least Common Multiple
2: 2,4,6,8,10
8: 8,16,24,32,40
8
What is the fourth step when adding and subtracting fractions with unlike denominators?
DOUBLE JEOPARDY!
Simplify or reduce
1 2/5 + 2 3/20
3 11/20
5 4/5 - 2 3/4
3 1/20
What does simplify mean?
To reduce a fraction to it's simplest form or make the fraction as small as possible.
What is the Greatest Common Factor of 3 and 18?
3
What multiple would you use to find common denominators for 2/6 and 1/7?
42
5 2/6 + 3 3/5
8 14/15
5 1/5 - 4 3/7
8/35
What is a common denominator?
When the bottom number of the fraction is the same for both fractions.
Finding Equivalent Fractions/Simplifying