Inverse Ratios 2

Purpose

These exercises and activities are for students to use independently of the teacher to practise number properties.

Specific Learning Outcomes

solve problems involving inverse ratio problems

Description of Mathematics

Proportions and Ratios, AP (Stage 8)

Required Resource Materials

Practice exercises with answers (PDF or Word)

Activity

Prior knowledge:

Multiplication basic facts
Multiply two digit numbers by single digit numbers.
Find fractions of numbers.
Work with equivalent fractions.
Solve straightforward ratio problems.

Background:

It will be helpful if students have solved simple ratio problems before exploring the concept of inverse ratios.

Comments on the Exercises

Exercise 1
Asks students to find the time taken given an inverse ratio.

Exercise 2-3
Asks students to find a range of alternative ratios given an inverse ratio.

Exercise 4-10
Asks students to find equivalent inverse ratios.

Homework Exercises:

Follow the same model as the practice exercises.

Related Resources

These exercises and activities follow from a teaching episode based on Book 8 Inverse Ratios and are for those students who are able to use the associated number properties.

Attachments

InverseRatios.pdf31.96 KB

InverseRatios.doc84.5 KB