Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
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Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
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Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
Dividing Fractions and Mixed Numbers
Objectives: Divide fractions and mixed numbers.
3
1
__
__
= ______
Engage: 1 ÷ 2 4
8
Discuss with your tables how you would solve this problem. Be prepared to share how you would solve it. Steps for solving the division of fractions and mixed numbers.
Step 1: Write mixed numbers as improper fractions.
Step 2: Find the reciprocal of the divisor.
Step 3: Multiply by the reciprocal of the divisor. Reduce.
Step 4: Circle you answers. 3
Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
Model:
3
__
1) 4 ÷ 2 =
4
2) 3
______
1 1
__
÷ 1 __
3
3
Let's take a closer look at #2. Can anyone think about a short cut to solving this problem? Hint: the short cut will be after step number 2 and before step number 3!
4
Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
Cross Canceling: you may cross cancel/reduce when you are about to multiply.
1
2
1) __
x __
6
3
2)
1
3
__
x __
3
4
3)
6
2
__
x __
10
14
Solve: Use cross canceling when possible...
1) 2
1
1
__
__
÷ 7
=
2
7
_____
1
3
2) 7 __ ÷ 3 __ =
2
4
_____
8
1
__
3) 1 __ ÷ 1
6
9
5
Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
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Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
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Day 2 Dividing fractions and mixed numbers.notebook
April 09, 2014
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