Before: August 9, 2017 Correct answer: 7/8

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Presentation transcript:

Before: August 9, 2017 Correct answer: 7/8 Correct answer: 7/8 Correct answer: Suzi by 1/10 of a day

DURING: MULTIPLYING & DIVIDING FRACTIONS Learning Target: I can… Deepen my conceptual understanding of division and multiplication with fractions. Use real-life problem-solving situations to surface the meaning of division and multiplication of fractions.

Key Points Multiplying Dividing Multiplying fractions is easier than adding or subtraction because you don’t need to find common denominators. YAY!!! Just multiply straight across. Multiply numerators together. Then, multiply denominators together **CHANGE A MIXED NUMBER INTO AN IMPROPER FRACTION **SIMPLIFY YOU ANSWER

“I DO” Multiplying Fractions 4/15 6/40 = 3/20 352/27 = 13 1/27

“WE DO” Multiplying Fractions A carpenter is fixing a house. He needs to cut some beams. He will be sawing off 2/3 of a six and a half foot beam. How much will he be sawing off? Answer: He will saw off 4 1/3 feet of the beam.

“YOU DO” Multiplying Fractions You are driving along and see that your tank is only 3/8 full. The tank holds 14 gallons of gas. Your car goes 22 1/2 miles for every gallon of gas. How far can you drive before you run out of gas? How much gas do you have? 3/8 * 14 = ? Take the number of gallons and multiply it by 22 1/2 to get your answer.

“I DO” Dividing Fractions 2/3 18 2 2/11

“WE DO” Dividing Fractions There are 12 kids at a birthday party. There are three and a half pies and everyone will get an equal amount of pie. How much pie does each kid get? Answer: Each kid gets 7/24 of a pie.

AFTER: Practice Problems The prize can be bonus points, homework pass, etc.