Comparing Quantities Class 7 Notes: Chapter 8
Quite often, in our daily life, we are required to compare two quantities. Let us look at a few points on how a comparison between two or more objects can be done.
- It is to be noted that the comparison between any two quantities can be written as a ratio.
- To compare two quantities, their units must be the same.
- Different ratios can also be compared with each other to know if they are equivalent or not.
- Two ratios can be compared by converting them to like fractions. If the two fractions are equal, we say the two given ratios are equivalent. If two ratios are equivalent, then the four quantities are said to be in proportion. For example, 4:16 and 8:32 are equivalent, therefore, the numbers 4,16,8 and 32 are said to be in proportion.
- Another way of comparing quantities is by percentage. Percentages have numerators of fractions with a denominator of 100. Please refer Comparing Quantities Class 7 Notes for more revision notes.
CBSE Revision Notes 