Lesson 9: Dividing Fractions
I Can...
...calculate quotients of fractions, using the appropriate algorithm.
...explain and justify my algorithm choice for dividing fractions.
...explain the inverse relationship between multiplication and division.
...define and identify reciprocals.
...prove why dividing by a number is the same as multiplying by it's reciprocal.
...formulate an algorithm for dividing fractions.
...create a logical argument to defend my algorithm using fraction models.
...explain and justify my algorithm choice for dividing fractions.
...explain the inverse relationship between multiplication and division.
...define and identify reciprocals.
...prove why dividing by a number is the same as multiplying by it's reciprocal.
...formulate an algorithm for dividing fractions.
...create a logical argument to defend my algorithm using fraction models.
Words to Know
Quotient: the answer to a division problem
Examples
1. Dividing Fractions
Video
Video
Tips
1. Never change the first fraction!
2. Switch division sign to multiplication.
3. Switch the second fraction to reciprocal.
4. Follow normal multiplication rules.
2. Switch division sign to multiplication.
3. Switch the second fraction to reciprocal.
4. Follow normal multiplication rules.
Extra Examples
Click here for additional examples and self check quizzes.
Problems of the DAY
Answers must be submitted by 9am the following school day!
1. 5/9 divided by 10/12
2. 4/7 divided by 32/42
1. 5/9 divided by 10/12
2. 4/7 divided by 32/42