Percent and Percentage — Chapter Summary
ICSE · Class 7 · Mathematics
Summary of Percent and Percentage for ICSE Class 7 Mathematics. Part of the ICSE Class 7 Mathematics syllabus.
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Overview
Percent means per hundred or out of hundred. The symbol used for percent is %. A percent compares a quantity with 100 as the base. Fractions, decimals, ratios, and percentages are all different ways of representing values, and each form can be converted into another by using the correct rule. One qu
Key Concepts
The word cent means hundred
The word cent means hundred. Percent means per hundred or out of hundred. Five percent is written as 5%.
Multiply the value by 100
Multiply the value by 100 and write the percent sign. For example, 0.3 becomes 30%, and 3/4 becomes 75%.
Divide the percent by 100
Divide the percent by 100 and remove the % sign. For example, 120% = 120/100 = 6/5, and 37% = 0.37.
First make sure both quantities
First make sure both quantities are in the same unit. Then use the fraction x/y and multiply by 100%. For example, 40 p as a percent of ₹6 is found by
Use p% of N = (p/100)
Use p% of N = (p/100) × N. For example, 20% of 60 = 12.
Learning Objectives
- Understand the meaning of percent and the symbol %
- Convert fractions, decimals, and ratios into percentages
- Convert percentages into fractions and decimals
- Find one quantity as a percent of another
- Calculate percentage of a quantity
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