GCSE Maths - How to Scale Up Ratios #84

This video tutorial explains the concept of scaling up ratios, which is the opposite of simplifying them. It covers how to scale up ratios using examples, such as converting a simple ratio like 2:3 to a more complex one like 6:9. The tutorial also includes exam-style questions to practice scaling ratios and solving problems involving multiple items, such as a smoothie recipe. The key takeaway is that all scaled ratios are equivalent, and the video provides strategies for solving ratio problems effectively.

What is the process of simplifying a ratio?

• Adding the terms of the ratio

• Finding the greatest common factor and dividing both terms by it

• Multiplying both terms by the same number

• Subtracting the smaller term from the larger term

If a ratio of 2:3 is scaled up to 10 blue cubes, how many red cubes will there be?

• 20

• 15

• 25

• 12

In a ratio of 4:7, if there are 56 red cubes, how many blue cubes are there?

• 28

• 40

• 32

• 36

How do you calculate the total number of cubes if there are 24 blue cubes in a 4:7 ratio?

• Add 24 and 42

• Multiply 24 by 7

• Subtract 24 from 42

• Divide 24 by 4

If a recipe calls for 2 bananas and you want to use 6, how many times should you multiply the other ingredients?

• 2 times

• 3 times

• 5 times

• 4 times

In the smoothie recipe, if you use 6 bananas, how many blueberries are needed?

• 48

• 42

• 36

• 28

For the smoothie recipe, how many apples are required if 6 bananas are used?

• 6

• 9

• 12

• 15