We'll first find percentages of numbers by relating them to common fractions such as fourths, fifths and tenths. We'll work with percentage increase and percentage decrease, and use percentages to calculate the price of items in a sale, the amount of charge left in a battery and the total for a bill after including tips and taxes.

Percentages and Fractions

Intro to Percentages

Working out Percentages

Percentages and Batteries

Percentages as Fractions

Convert between percentage increase and percentages larger than 100.

Calculate adjustments to a bill from tips and taxes.

Percent Increase

Price Increase

Calculating Percent Increase

Use tenths and hundredths to compute percentages.

Find percentages by multiplying by a percentage.

Tenths, Hundredths and Decimals

Percentages as Tenths

Percentages as Hundredths

Finding the Percentage

Percentages as Decimals

Calculating the Percentage

Calculate a quantity decreased by a percentage.

Use percentage decrease to find the price of an item on sale.

Percent Decrease

Calculating Percent Decrease

Finding the Original Price

Reversing Percentages

Apply successive percentage changes to a number.

Compound Changes

Compound Calculations

Splitting Percent Changes

Growing and Shrinking

Exponential Growth

Reason about data and descriptive statistics in a practical context.

Percentages

Level 1Percentages and Fractions

Level 2Percent Increase

Level 3Tenths, Hundredths and Decimals

Level 4Percent Decrease

Level 5Compound Changes

Everyday Statistics

Course description

Topics covered