Rules & Formulas
Number: Cardinal + Noun • Percent: Number + %
Formula:
Number + plural noun (for countable)
Percent + of + noun
Depends on noun type
Percent + of + noun
Depends on noun type
Essential Rules
Use plural nouns with numbers
Percent works with both types
"Of" required with percentages
Consider countability
Concrete Examples
With Countable:
Three books
Five students
Twenty cars
Always plural after number
Five students
Twenty cars
Always plural after number
With Uncountable:
Two liters of water
Half a kilogram
Three cups of tea
With measure words
Half a kilogram
Three cups of tea
With measure words
Percentages:
60% of students
25% of water
75% of the population
With "of" + noun
25% of water
75% of the population
With "of" + noun
Fractions:
One third of the class
Two fifths of the budget
Three quarters of the time
Always with "of"
Two fifths of the budget
Three quarters of the time
Always with "of"
Complex Expressions
Decimals:
1.5 liters (one point five liters)
3.75 meters (three point seven five meters)
3.75 meters (three point seven five meters)
Ranges:
Between 10 and 20 people
From 30% to 50%
From 30% to 50%
Methods & Tips
Remember: numbers + plural nouns
Always use "of" with percentages
Check noun countability
Practice with statistics and data
Associate with "des" and "de la"
Common Mistakes
Mistake 1:
Using singular after numbers
Mistake 2:
Forgetting "of" with percentages
Mistake 3:
Confusing fractions with decimals
Mistake 4:
Misplacing the preposition "of"
Practice Tips
Learning:
Practice reading statistics in English
Practice:
Create sentences with different numbers
Review:
Check number-noun agreement
