Class 4 · Mathematics
Understanding fractions
A fraction names equal parts of a whole. Change the numerator and denominator and watch the model.
🎯 You will learn to
- Read and write fractions
- Identify numerator and denominator
- Compare simple fractions and convert them to percentages
When a whole is divided into equal parts, each part is a fraction of the whole.
In the fraction 3/4:
- The denominator (4) tells how many equal parts the whole is divided into.
- The numerator (3) tells how many of those parts we take.
If the denominator stays the same, a bigger numerator means a bigger fraction: 3/8 is more than 2/8. If the numerator stays the same, a bigger denominator means smaller parts: 1/8 is less than 1/4.
Fractions connect to percentages: 1/2 = 50%, 1/4 = 25%, 3/4 = 75%.
📌 Remember for the exam
- Parts must be equal
- Numerator on top, denominator below
- Fraction to percentage: divide, then multiply by 100
🎯 Learning objective: Represent fractions and convert them to decimals and percentages.
💬 Questions and answers
1What am I looking at?
Answer: A circle divided into equal parts with some parts lifted out.
2What are its parts? (click a part to identify it)
Answer: Numerator (parts taken) and denominator (equal parts in the whole).
3How does it work?
Answer: The denominator splits the whole into equal parts; the numerator counts how many are taken.
4Why is it important?
Answer: Fractions are used in sharing, measuring, recipes, discounts and percentages.
5What happens if I change something? (use the sliders)
Answer: Change the numerator and denominator and read the decimal and percentage.
6What should I remember for the exam?
Answer: Fraction → percentage: divide and multiply by 100. 1/4 = 25%, 3/4 = 75%, 1/8 = 12.5%.