KS2 Primary Maths Age 13-17 - Fractions, Decimals and Percentages: Adding and Subtracting Fractions - Explained

The video tutorial explains how to find the lowest common denominator (LCD) for fractions, convert fractions to equivalent forms with a common denominator, and perform subtraction with these fractions. It also provides tips on writing fractions in different formats for clarity.

What is the purpose of finding the lowest common denominator when working with fractions?

• To convert fractions into decimals

• To simplify the fractions

• To find the greatest common factor

• To make the denominators equal for addition or subtraction

How do you convert eight ninths to an equivalent fraction with a denominator of 36?

• Multiply both the numerator and denominator by 4

• Multiply both the numerator and denominator by 2

• Multiply both the numerator and denominator by 3

• Multiply both the numerator and denominator by 9

What is the equivalent fraction of one quarter with a denominator of 36?

• 8/36

• 9/36

• 10/36

• 11/36

After converting the fractions, what is the result of subtracting 9/36 from 32/36?

• 27/36

• 21/36

• 25/36

• 23/36

What advice is given for writing fractions in a small space?

• Avoid writing fractions in small spaces

• Use a larger font size

• Write the fraction as a decimal

• Use a slash to separate the numerator and denominator