KS2 Primary Maths Age 13-17 - Ratio, Proportion and Algebra: Percentage Problems - Explained

What is the first step in calculating 10% of a number according to the instructor?

• Add 10 to the number

• Subtract 10 from the number

• Divide the number by 10

• Multiply the number by 0.1

How does the instructor suggest finding 1% of a number?

• Multiply the number by 0.01

• Divide the number by 100

• Take 1/10 of 10%

• Add 1 to the number

What is the result of multiplying 90 by 5 in the instructor's example?

• 45

• 450

• 90

• 500

What is the final step to find the total percentage in the instructor's method?

• Divide 450 by 9

• Multiply 450 by 9

• Add 9 to 450

• Subtract 9 from 450

What is the final answer recorded by the instructor?

• 469

• 450

• 459

• 495