Download Cheat Sheet: Fractions Adding and Subtracting Fractions with Unlike

Cheat Sheet: Fractions
Adding and Subtracting Fractions with Unlike Denominators
1. Change to like denominators (Use the LCM(Least Common Multiple) as
your (LCD)Least Common Denominator)
2. Add or subtract the Numerators
3. Add or subtract the denominators
4. Reduce answer to lowest terms.
Adding and Subtracting Mixed Numbers
1. Change Mixed numbers to improper fractions
2. Find common denominators
3. Add or subtract the numerators
4. Add or subtract the denominators
5. Change answer back to a mixed number if needed.
6. Reduce to lowest terms
Multiplying Fractions
1.
2.
3.
4.
You do not need common denominators
Multiply the numerators
Multiply the denominators
Reduce to lowest terms (If you end with an improper fractions, change to
a mixed number then reduce.)
Multiplying Mixed Numbers
1.
2.
3.
4.
5.
6.
Change Mixed numbers to improper fractions
You do not need common denominators
Multiply the numerators
Multiply the denominators
Change back to a mixed number
Reduce to lowest terms.
Dividing Fractions
1.
2.
3.
4.
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6.
7.
8.
Remember the Keep It, Flip It, Change It Rule
You do not need common denominators
Keep first fraction the same
Change the division sing to multiplication
Flip the second fraction (Reciprocal)
Multiply the numerators
Multiply the denominators
Reduce to lowest terms
Dividing Mixed Numbers
1.
2.
3.
4.
5.
6.
7.
8.
Change mixed numbers to improper fractions
Keep first fraction as it is
Change the divide sign to multiplication sign
Flip the second fraction (Reciprocal)
Multiply the numerators
Multiply the denominators
Change back to a mixed number if needed
Reduce to lowest terms.
Multiplying or dividing by a whole number.
1. Put the whole number on a stick. 
2. Then do as you would any problem of that type.