# 2.09 Working with percentages

## Interactive practice questions

Consider the fraction $\frac{9}{10}$910.

a

Fill in the missing numerator.

$\frac{9}{10}$910 $=$= $\frac{\editable{}}{100}$100

b

Hence express $\frac{9}{10}$910 as a percentage.

Easy
Less than a minute

Convert $\frac{5}{10}$510 into a percentage.

Convert $\frac{3}{4}$34 into a percentage.

Fill in the missing numerator.

### Outcomes

#### 6.RP.3

Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations.

#### 6.RP.3c

c. 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.

#### 6.RP.A.3.e

Use ratio and rate reasoning to solve real-world and mathematical problems, e.g., by reasoning about tables of equivalent ratios, tape diagrams, double number line diagrams, or equations e. Solve problems that relate the mass of an object to its volume.