Adding Subtracting Multiplying Dividing Fractions and Mixed Numbers

When adding or subtracting fractions, you -

• use our 4-box method

• only add/subtract numerators & add/subtract denominators

• keep change flip

• do not need to find common denominators

When multiplying fractions, you -

• multiply the numerators & multiply the denominators

• keep change flip

• find common denominators

• do not have to reduce

When multiplying or dividing a fraction with a whole number, you need to do what to the whole number?

• put it in fraction form by putting the same number on top and bottom

• put it in fraction form by putting it over 1

• reduce it and then put it in fraction form

• put it in fraction form by finding least common denominator

What should you do with mixed numbers when adding, subtracting, multiplying, or dividing?

• change them to improper fractions using TX

• reduce them

• flip them

• find common factors

What is the sum?

• 
• 
• 
• 

When dividing with fractions, you -

• divide across top and bottom

• find common denominator

• keep change flip

• reduce

Multiply:

-4 1/2 X -1/4

• -8/9

• 1 3/9

• 1 1/8

• -10/4

• -9/8

• -18

• 16

• 8/9

Convert the following problem to a decimal.

• .45

• .54

• .80

• .90

• 1

• 12/12

• 16/9

• 9/16