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  4. Represent the relationship between two quantities based on the ratio 1:1 up to 1:10, 1:100 and 1:1000

Ratio

 
7.2  Ratio
 

We will learn to represent the relationship between two quantities in a ratio.
 
  • A ratio is a comparison between two quantities that have the same unit of measurement.
  • The ratio a to b is written as a:b or in the form of an \({a \over b}\) fraction.
  • Ratios are written in the form of whole numbers without any unit of measurement.
 

There are 3 types of ratios:

  1. The ratio of parts to other parts.
  2. The ratio of parts to a whole.
  3. Overall ratio to parts.
 

For example:

There are 12 marbles in the container, namely 5 green marbles and 7 blue marbles.
 
  • The ratio of the number of green marbles to blue marbles is 5:7.
  • The ratio of the number of blue marbles to green marbles is 7:5.
  • The ratio of the number of blue marbles to all marbles is 7:12.
  • The ratio of the number of all marbles to green marbles is 12:5.
 

 

The views expressed in the notes here are those of the contributor and don’t necessarily represent the views of pandai.

Ratio

 
7.2  Ratio
 

We will learn to represent the relationship between two quantities in a ratio.
 
  • A ratio is a comparison between two quantities that have the same unit of measurement.
  • The ratio a to b is written as a:b or in the form of an \({a \over b}\) fraction.
  • Ratios are written in the form of whole numbers without any unit of measurement.
 

There are 3 types of ratios:

  1. The ratio of parts to other parts.
  2. The ratio of parts to a whole.
  3. Overall ratio to parts.
 

For example:

There are 12 marbles in the container, namely 5 green marbles and 7 blue marbles.
 
  • The ratio of the number of green marbles to blue marbles is 5:7.
  • The ratio of the number of blue marbles to green marbles is 7:5.
  • The ratio of the number of blue marbles to all marbles is 7:12.
  • The ratio of the number of all marbles to green marbles is 12:5.
 

 

The views expressed in the notes here are those of the contributor and don’t necessarily represent the views of pandai.
Chapter : Coordinates, Ratio And Proportion
Topic : Represent the relationship between two quantities based on the ratio 1:1 up to 1:10, 1:100 and 1:1000
Year 4 Mathematics
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