Reciprocals
What is the reciprocal of 4/5?
5/4
1/7 ÷ 2/5
5/14
1/2 ÷ 5
1/10
1/3 ÷ 2 1/2
2/15
What does KCF stand for?
Keep, Change, Flip
What is the reciprocal of 2/7?
7/2
2/5 ÷ 3/7
14/15
4 ÷ 2/3
Write your answer in best form.
6
2/5 ÷ 1 3/4
8/35
Rewrite this problem using KCF:
4/7 ÷ 3/8
4/7 • 8/3
What is the reciprocal of 4?
1/4
1/2 ÷ 1/3
Write your answer in best form.
1 1/2
6 ÷ 3/4
Write your answer in best form.
8
3 2/3 ÷ 1/2
Write your answer in best form.
7 1/3
When you do keep, change, flip...
You are really multiplying by the ___________.
reciprocal
What is the reciprocal of 1 1/2?
2/3
2/3 ÷ 1/4
Write your answer in best form.
2 2/3
4/5 ÷ 2
Write your answer in best form.
2/5
4 1/2 ÷ 3/5
Write your answer in best form.
7 1/2
What is the last step you should check for when dividing fractions?
Simplifying
What is the reciprocal of 2 4/5?
5/14
5/7 ÷ 1/4
Write your answer in best form.
2 6/7
9 ÷ 4/5
Write your answer in best form.
11 1/4
3 1/2 ÷ 2 1/3
Write your answer in best form.
1 1/2
What is the first step when dividing "fractions"?
Think carefully...
Convert mixed numbers into fractions greater than 1.