Skill: Answer two-step questions from graphs

A graph uses pictures or bars to show amounts. First, read the key or scale. Then find the amounts you need and solve the question in two steps.

Here is a picture graph showing books read:

Book topic	Books
Adventure	■ ■ ■ ■
Animals	■ ■ ■
Space	■ ■ ■ ■ ■

Key: Each ■ represents $2$ books.

Question: How many more Adventure and Animals books were read together than Space books?

Step 1: Find the number of books in each category.

• Adventure: $4$ symbols, so $(4 \times 2 = 8)$ books.
• Animals: $3$ symbols, so $(3 \times 2 = 6)$ books.
• Space: $5$ symbols, so $(5 \times 2 = 10)$ books.

Step 2: Find the combined number of Adventure and Animals books.

$$8+6=14$$

There were $(14)$ Adventure and Animals books together.

Step 3: Compare the combined amount with the Space amount.

$$14-10=4$$

Answer: There were $\boxed{4}$ more Adventure and Animals books together than Space books.