How Do You Use an Equation to Find a Part of a Whole?

How Do You Use an Equation to Find a Part of a Whole?

Note:

Taking a percent of a number? Trying to figure out the result? Convert the percent to a decimal and multiply it by the number! This tutorial will show you how!

Keywords:

  • problem
  • percent
  • find percent
  • percent of number
  • find percent
  • decimal
  • multiply decimal

Background Tutorials

  • Find a percent of a quantity as a rate per 100 (e.g., 30% of a quantity means 30/100 times the quantity); solve problems involving finding the whole, given a part and the percent.

      • What's a Percent?What's a Percent?

      What's a Percent?

      Sales tax, tips at restaurants, grades on tests... no matter what you do, you can't run away from percents. So watch this tutorial and see once and for all what percents are all about!

  • Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.

      • How Do You Multiply Decimals?How Do You Multiply Decimals?

      How Do You Multiply Decimals?

      Doing math with paper and pencil can come in real handy, so make sure you're comfortable multiplying decimals by hand. After all, you don't want the calculator to be a crutch!

  • Write expressions that record operations with numbers and with letters standing for numbers.

Further Exploration

  • Use proportional relationships to solve multistep ratio and percent problems.

      • How Do You Use a Proportion to Find a Part of a Whole?How Do You Use a Proportion to Find a Part of a Whole?

      How Do You Use a Proportion to Find a Part of a Whole?

      Taking a percent of a number? Trying to figure out the result? Use a percent proportion to solve! This tutorial will show you how!

      • How Do You Figure Out How Much Something is Marked Down?How Do You Figure Out How Much Something is Marked Down?

      How Do You Figure Out How Much Something is Marked Down?

      Going shopping? Is something you want on sale? Trying to figure out the sale price of that item? Follow along with this word problem and you'll see how to calculate that price!

      • How Do You Figure Out Sales Tax?How Do You Figure Out Sales Tax?

      How Do You Figure Out Sales Tax?

      Going shopping can be tons of fun, but things can go sour when you get to the register and realize that the sales tax puts you over your budget. Always stay under budget by figuring out your total cost BEFORE you hit the check out. Watch this tutorial and learn how to calculate sales tax!