Multiply and divide fractions.

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Presentation transcript:

Multiply and divide fractions.

Warm-Up

VOCAB Reciprocal: Flip a fraction over X If we multiply them, we get 1

Multiplying Fractions Top x Top 5 x 2 = = 6 x 3 Bottom x Bottom 10 5 = 18 9

Dividing Fractions = x

Example 1 Find the value of using models. Shade vertically. Shade horizontally. The answer is the number of regions that are shaded twice. Put the answer in simplest form.

Example 2 Find the value of . Multiply. Simplify.

Example 3 Find the value of . Divide. Simplify.

Example 4 Find the value of . Divide. Simplify. Change to a mixed number.

Exit Problems Find each product or quotient. Write answers in simplest form.

Communication Prompt Fractions can be simplified before or after multiplying. Which method do you prefer and why?