REVIEW: Multiply Fractions with Models

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Presentation transcript:

REVIEW: Multiply Fractions with Models What is one-half of one-third? We have : And we take half of it! MORE PRACTICE: http://www.learner.org/courses/learningmath/number/session9/part_a/try.html 6-5 MULTIPLY FRACTIONS

Divide Fractions 6-5 MULTIPLY FRACTIONS

NOTES: Divide Fractions with Models means how many ’s are in ? So, I have 4 groups of 2! Let’s try a fraction: So, I have 8 groups of ½! 6-5 MULTIPLY FRACTIONS

NOTES: Dividing Fractions VOCAB: The product of a fraction and its reciprocal (or multiplicative inverse) is 1. …To make a reciprocal, flip the fraction upside down! Rewrite in fraction form – Turn mixed #’s & whole #’s into improper fractions! 2. Multiply by the reciprocal. **Keep It – Change It – Flip It Method 3. As always…SIMPLIFY! DO NOT Have to FIND COMMON DENOMINATORS! 6-7 DIVIDE FRACTIONS

NOTES: Dividing Fractions When Dividing Fractions Don't be Shy Flip the 2nd And Multiply! 6-7 DIVIDE FRACTIONS

EXAMPLES: Dividing Fractions 1 2 1 3 1 6-5 MULTIPLY FRACTIONS

EXAMPLES: Dividing Fractions 1 4 3 1 5 19 5 6 4 6-5 MULTIPLY FRACTIONS

If you want to find common denominators, you can **If you want to find common denominators, you can. Your denominators will divide away, and you will divide the numerators straight across. Once you have a common denominator, divide straight across. 3 ÷ 2 = 6-5 MULTIPLY FRACTIONS