Dividing Fractions March 24, 2011.

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Presentation transcript:

Dividing Fractions March 24, 2011

Fractions Agenda Steps to Dividing Fractions Practice Dividing Fractions Writing Word Problems

An Easy Way To Remember Dividing Fraction is Easy as Pie. Flip Flop the Second Fraction Then Multiply!

You have 3 minutes to copy. ⅓ ÷ ⅙ Dividing Fractions Step 1: Change the second fraction to its reciprocal which means to flip flop the second fraction. 1 ÷ 1 1 ÷ 6 3 6 3 1 Step 2: Multiply the with the reciprocal. 1 X 6 = 6 3 1 3 Step 3: Simplify the fraction or reduce to the lowest terms if needed. (Remember to divide by the GCF 6 ÷ 3 = 2 or 2 3 ÷ 3 1

Let’s Go!

Warm-Up Using Your Notes complete the following fractions. Please show your step-by-step work. 5/8 X 2/5 = ¾ X 3 = Describe how you would solve multiplication problems using your calculator?

Warm-Up- Did You Get it Right? Using Your Notes complete the following fractions. Please show your step-by-step work. 5/8 X 2/5 = 1/4 ¾ X 3 = 2 ¼ Describe how you would solve multiplication problems using your calculator?

Let’s Go!

✔For Understanding 3/8 ÷ 4/5 = 3/7 ÷ 3/5= 3 ⅙ ÷ 1¼ = An Italian sausage is 8 inches long. How many pieces of sausage can be cut from the 8-inch piece of sausage if each piece is to be two-thirds of an inch

✔For Understanding 3/8 ÷ 4/5 = 15/32 3/7 ÷ 3/5= 5/7 3 ⅙ ÷ 1¼ = 2 8/15 3/8 ÷ 4/5 = 15/32 3/7 ÷ 3/5= 5/7 3 ⅙ ÷ 1¼ = 2 8/15 An Italian sausage is 8 inches long. How many pieces of sausage can be cut from the 8-inch piece of sausage if each piece is to be two-thirds of an inch So, divide 8 by 2/38 ÷ 2/3 = 8/1 ÷ 2/3 = 8/1 × 3/2 = 24/2 = 12

✔For Understanding Take 15 minutes to develop two word problems using fractions. Once you complete the words problems, your teacher will ask you to share it with your class. Make sure you can solve your own word problems. Use your key words chart to find helpful words for division.