Fractions

Overview

Fractions form one of the most essential building blocks in primary mathematics and appear consistently in the WB TET Paper I Mathematics section. A fraction represents a part of a whole or a ratio between two quantities. Mastery of fractions is critical because nearly every subsequent arithmetic topic—percentages, ratios, decimals, and basic algebra—depends on a solid understanding of how fractions work.

For the WB TET, you must be comfortable identifying fraction types, converting between them, performing basic operations, and understanding their decimal equivalents. Questions often test conceptual understanding alongside computation, so knowing *why* fraction rules work is just as important as memorising procedures. Teachers must also be able to explain fractions using visual models (like area models or number lines) to young learners.

Key Concepts

• **Fraction as part-whole**: A fraction a/b means 'a' equal parts out of 'b' total equal parts. The whole must be divided into equal parts for the fraction to be meaningful.

• **Numerator and Denominator**: The top number (numerator) tells how many parts we have; the bottom number (denominator) tells how many equal parts make the whole.

• **Proper Fraction**: Numerator is less than denominator (e.g., 3/5). Value is always less than 1.

• **Improper Fraction**: Numerator is greater than or equal to denominator (e.g., 7/4). Value is 1 or greater.