Solving Two-Step Algebra: Variables & Inverse Operations

Maria has some apples. If she buys 5 more apples, she will have 12 apples. How many apples did she start with?

• 8

• 6

• 10

• 7

A book costs $15. If you have $5 and you want to buy the book, how much more money do you need?

• $20

• $15

• $5

• $10

Tom is 3 years older than his sister. If his sister is x years old, write an equation to find Tom's age if the total of their ages is 27.

• 18

• 12

• 21

• 15

A box contains some chocolates. If you take out 8 chocolates, there are 20 left. How many chocolates were in the box originally?

• 28

• 30

• 24

• 18

Lily has twice as many marbles as Jake. If Jake has x marbles and together they have 30 marbles, how many marbles does Jake have?

• 10

• 15

• 20

• 5

A car travels 60 miles in 1 hour. If it travels for 2 hours and then stops for 30 minutes, how far has it traveled in total?

• 120 miles

• 90 miles

• 100 miles

• 150 miles

The sum of a number and 9 is 25. What is the number?

• 15

• 10

• 20

• 16

A rectangle has a length of 10 cm and a width that is 4 cm less than the length. What is the width of the rectangle?

• 7 cm

• 8 cm

• 5 cm

• 6 cm

If you subtract 7 from a number and the result is 15, what is the number?

• 30

• 8

• 15

• 22

A farmer has some chickens. If he sells 10 chickens and has 25 left, how many chickens did he have at the start?

• 35

• 40

• 30

• 20