Comparing Speeds and Prices

• I understand that if two ratios have the same rate per 1, they are equivalent ratios.
• When measurements are expressed in different units, I can decide who is traveling faster or which item is the better deal by comparing “how much for 1” of the same unit.

Interpreting Rates

• I can choose which unit rate to use based on how I plan to solve the problem.
• When I have a ratio, I can calculate its two unit rates and explain what each of them means in the situation.

Equivalent Ratios Have the Same Unit Rates

• I can give an example of two equivalent ratios and show that they have the same unit rates.
• I can multiply or divide by the unit rate to calculate missing values in a table of equivalent ratios.

More Rate Comparisons

What Are Percentages?

• I can create a double number line diagram with percentages on one line and dollar amounts on the other line.
• I can explain the meaning of percentages using dollars and cents as an example.

Representing Percentages with Double Number Line Diagrams

• I can use double number line diagrams to solve different problems like “What is 40% of 60?” or “60 is 40% of what number?”

Representing Percentages in Different Ways

• I can use tape diagrams and tables to solve different problems like “What is 40% of 60?” or “60 is 40% of what number?”

Benchmark Percentages

• When I read or hear that something is 10%, 25%, 50%, or 75% of an amount, I know what fraction of that amount they are referring to.