Calculating a Percentage of a Whole Number: Solving 80% of 115

The video tutorial explains how to calculate percentages using a step-by-step approach. It begins by identifying 115 as 100% and demonstrates how to find 10% by dividing 115 by 10. The tutorial then shows how to calculate 80% by multiplying 11.5 by 8, ensuring the decimal point is correctly placed. The final answer is confirmed as 92, with a detailed explanation of each step involved in the calculation.

What is the first step in finding 10% of 115?

• Subtract 10 from 115

• Add 10 to 115

• Divide 115 by 10

• Multiply 115 by 10

After dividing 115 by 10, what is the result?

• 10.5

• 1.15

• 115

• 11.5

How do you calculate 80% of 115 after finding 10%?

• Multiply 115 by 8

• Divide 11.5 by 8

• Multiply 11.5 by 8

• Add 11.5 to 8

What is the result of multiplying 8 by 5 in the calculation?

• 50

• 35

• 45

• 40

What is the final answer for 80% of 115?

• 91.5

• 92.0

• 92.5

• 90.0