Using 1% and 10% to Find Percentages of a Number

This video tutorial explains how to calculate percentages of a number using 10% and 1% as starting points. It provides six examples, demonstrating the step-by-step process of finding percentages like 32% of 400, 63% of 50, and others. The video encourages viewers to practice these methods and find the most efficient way to calculate percentages.

What is the first step in calculating 32% of 400?

• Multiply 400 by 3.2

• Divide 400 by 100 to find 1%

• Divide 400 by 10 to find 10%

• Multiply 400 by 0.32

How do you find 3% of 50?

• Multiply 50 by 0.03

• Divide 50 by 3

• Multiply 0.5 by 3

• Divide 50 by 100

What is the result of adding 20% and 9% of 300?

• 87

• 90

• 85

• 80

How do you calculate 40% of 250?

• Multiply 25 by 4

• Divide 250 by 4

• Multiply 250 by 0.4

• Add 10% four times

What is the first step in finding 78% of 500?

• Divide 500 by 100

• Multiply 500 by 7

• Divide 500 by 10 to find 10%

• Multiply 500 by 0.78

How do you find 4% of 120?

• Multiply 1.2 by 4

• Divide 120 by 4

• Multiply 120 by 0.04

• Add 1% four times

What is a quick way to find 50% of a number?

• Multiply by 0.5

• Divide by 10

• Divide by 2

• Multiply by 5