KS2 Primary Maths Age 9-13 - Percentages: - Explained

The video tutorial explains how to calculate percentages of children liking different colors. It starts with a breakdown of percentages for red, blue, and green, and then calculates the percentage for orange and yellow, which are equal. The tutorial also demonstrates how to find the percentage of children liking blue using a step-by-step method without a calculator. The video concludes with tips on handling percentages and emphasizes the importance of ensuring all percentages add up to 100.

What percentage of children liked orange if the total percentage for red, blue, and green is 97%?

• 1.5%

• 3%

• 1%

• 2%

If 12% of 200 children liked blue, how many children is that?

• 20

• 22

• 24

• 26

How do you calculate 10% of a number without a calculator?

• Subtract 10

• Multiply by 10

• Divide by 10

• Add 10

What is the quick method mentioned for calculating 1% of a number?

• Knock off one zero

• Knock off two zeros

• Multiply by 0.1

• Divide by 100

Why is it important to ensure all percentages add up to 100?

• To make the numbers look better

• To simplify the process

• To avoid errors in calculations

• To ensure accuracy in data representation