Mathematics
Ratio & Proportion
Conceptual
11–13 yrs
Percentages as Fractions
百分数与分数
Description
Define percentage as 'number of parts per hundred'; interpret percentages and percentage changes as a fraction or a decimal; express one quantity as a percentage of another; compare quantities using percentages; work with percentages greater than 100%
Mastery Evidence
- Convert fluently between percentages, fractions, and decimals
- Express one quantity as a percentage of another
- Calculate percentage increases and decreases and interpret percentages greater than 100%
Assessment Prompt
If a shop says a TV is 130% of its original price, does your child understand what that means — and can they work out the new price from the original?
