Multiply Fractions Cancel First

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

Multiply. Write your answer as a mixed fraction.

Mathematical Equivalence

ON

Multiply.

Mathematical Equivalence

OFF

Which fraction operation(s) are you allowed to cross-cancel?

• Adding

• Subtracting

• Multiplying

• Dividing

How do you multiply fractions?

• Criss-cross

• Straight across

• Top-to bottom

• You can't

Can you cross- cancel before multiplying these fractions?

• Yes, you can cancel 4 and 11

• Yes, you can cancel 3 and 12

• Yes, you can cancel all of the numbers

• No, you cannot cancel 

Answer explanation

Yes, you can cross-cancel before multiplying. The 3 in the numerator of the first fraction can be canceled with the 12 in the denominator of the second fraction, simplifying the multiplication.

When you multiply fractions you

• see if you can cross cancel and then multiply the numerators and multiply the denominators

• keep change flip then multiply the numerators and multiply the denominators

• find common numerators

• add the numerator to the denominator