GCSE Maths - How to Express One Number as a Percentage of Another #97

The video tutorial explains how to express one number as a percentage of another by converting them into fractions and multiplying by 100. It covers examples with whole numbers, decimals, and different units, emphasizing simplification and real-world application. The tutorial also highlights the importance of understanding when percentages exceed 100% and how to extract relevant information from scenarios.

How do you express 15 as a percentage of 25?

• Add 15 and 25, then multiply by 100

• Divide 15 by 25 and multiply by 100

• Subtract 15 from 25 and multiply by 100

• Multiply 15 by 25

What is the percentage of 240g out of 320g?

• 60%

• 75%

• 80%

• 85%

How can you simplify the fraction 0.3/1.5 before converting it to a percentage?

• Multiply both by 5

• Multiply both by 10

• Divide both by 5

• Divide both by 2

If you have 1.2 kilos and 800 grams, what should you do first to express 1.2 kilos as a percentage of 800 grams?

• Convert 1.2 kilos to grams

• Convert 800 grams to kilos

• Subtract 800 grams from 1.2 kilos

• Add both values

A car's price drops by 4000 lbs from an original price of 32,000 lbs. What is the percentage decrease?

• 12.5%

• 10%

• 15%

• 20%