GCSE Secondary Maths Age 13-17 - Number: Fractions - Explained

The video tutorial covers two main topics: multiplying and subtracting fractions. In the first part, the teacher explains how to multiply fractions by multiplying the numerators and denominators. The second part focuses on subtracting fractions, emphasizing the need for a common denominator and demonstrating how to convert fractions to equivalent forms before performing the subtraction.

What is the result of multiplying 1/7 by 2/3?

• 2/21

• 3/14

• 1/10

• 5/21

Why is it necessary to have a common denominator when subtracting fractions?

• To make the numerators equal

• To simplify the fractions

• To ensure the fractions are comparable

• To make the denominators equal

What is the lowest common denominator of 5 and 3?

• 25

• 20

• 15

• 10

If you convert 3/5 to have a denominator of 15, what is the new numerator?

• 6

• 9

• 12

• 15

What is the result of subtracting 5/15 from 9/15?

• 3/15

• 4/15

• 2/15

• 1/15