Skill: Answer questions from data displays

When you read a data display, look at:

1. The title to learn what the graph is about.
2. The category labels to see what is being compared.
3. The key or scale to know how much each picture, bar, or interval represents.
4. The data to find the numbers you need.

Here is a picture graph.

Books Read

Student	Books
Mia	📘 📘 📘
Luis	📘 📘 📘 📘 📘

Key: Each 📘 represents $2$ books.

Question: How many more books did Luis read than Mia?

Step 1: Find Mia’s number.
Mia has $3$ pictures. Each picture represents $2$ books:

$$3 \times 2 = 6$$

Mia read $6$ books.

Step 2: Find Luis’s number.
Luis has $5$ pictures:

$$5 \times 2 = 10$$

Luis read $(10)$ books.

Step 3: Subtract to compare.

$$10 - 6 = 4$$

Answer: Luis read $\boxed{4}$ more books than Mia.