Multiplication of Fractions Cross Cancel

To multiply fractions you

• look to see if you can cross cancel then multiply straight across

• use cross products

• multiply the numerators and keep the denominators the same

• flip the second fraction then multipy

To divide fractions you

• change it to multiplication

• cross cancel

• flip the first fraction then multiply

• flip the second fraction then multiply

• 5/6
• 3/15
• 3/8
• 2/15

• 8  ¹/35
• 8  ¹²/35
• 9
• 8  ⁴/₁₅

• 1/10

• 1/20

• 2/20

• 2/5

• 1/42

• 3/42

• 1/14

• 2/14

• 4/30

• 2/15

• 1/6

• 4/5

• 1/10

• 18/60

• 6/20

• 3/10

• 2 2/9

• 8/54

• 9/20

• 2 1/2

• 9/16

• 3/80

• 3/25

• 9/5