Ratio and proportion
Build and connect the representations and methods in ratio and proportion.
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Before you begin
Build and connect the representations and methods in ratio and proportion.
Learning goals
- Write the ordered ratio of given quantities
- Find quantities from a ratio and a known part or difference
- Write a different equivalent whole-number ratio
- Express a whole-number ratio in simplest form
- Find a missing term in equivalent whole-number ratios
- Express a ratio part as a fraction of the whole
- Express a part-to-whole fraction as a part-to-rest ratio
- Share a quantity in a specified ratio
Syllabus statements covered
- notation, representations and interpretation of a:b and a:b:c, where a, b and c are whole numbers, excluding ratios involving fractions and decimals
- equivalent ratios
- dividing a quantity in a given ratio
- expressing a ratio in its simplest form
- finding the ratio of two or three given quantities
- finding the missing term in a pair of equivalent ratios
- relationship between fraction and ratio
In this topic
About lesson progress
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Ratios and equal shares
Use equal-sized ratio units to compare and share quantities with whole-number terms.