6.9A Extra Practice

Sarah has 12 apples and gives some to her friend. Now she has 7 apples left. Write an equation to represent the number of apples she gave away.

A book costs $15. If you have 6 dollars, how much more money do you need to buy the book?

If 5 times a number is 35, what is the equation to find the number?

Grace has a ribbon that is divided into 4 equal parts. Each part is 6 cm long. Write an equation to represent the total length of the ribbon.

Daniel has a certain amount of money. If he receives 9 more dollars, he will have 20 dollars in total. Write an equation to represent this situation.

A number is less than 15. Write an inequality to represent this situation.

Daniel has a certain number of apples. If he adds 3 more apples, he will have more than 10 apples. Write an inequality to represent this situation.

• x+3<10

• x+3>10

• x−3>10

• x+10>3

Arjun has a certain number of books. If he gives away 4 books, he will have less than 9 books left. Write an inequality to represent this situation.

• x−4 < 9

• x+4 < 9

• x−9 < 4

• x+9 < 4