Solving Real-Life Equations: Find the Unknowns!

1. Sarah has some apples. If she buys 5 more apples, she will have a total of 12 apples. How many apples did she start with? Define the variable as 'a'.

• 10

• 7

• 8

• 6

2. Tom is saving money for a video game. If he saves $10 each week, how many weeks will it take him to save $50? Define the variable as 'w'.

• 5 weeks

• 7 weeks

• 3 weeks

• 10 weeks

3. A box contains some chocolates. If 8 chocolates are eaten, there are 15 left. How many chocolates were in the box originally? Define the variable as 'c'.

• 20

• 25

• 23

• 18

4. Lisa has twice as many marbles as John. If John has 'm' marbles, write an equation to express how many marbles Lisa has and find out how many marbles Lisa has if John has 6 marbles.

• Lisa has 12 marbles.

• Lisa has 10 marbles.

• Lisa has 14 marbles.

• Lisa has 8 marbles.

5. A car travels 60 miles per hour. How far will it travel in 't' hours? Write an equation and find the distance if the car travels for 3 hours.

• 120 miles

• 240 miles

• 90 miles

• 180 miles

6. A farmer has 'x' cows. If he buys 4 more cows, he will have 20 cows in total. How many cows did he have before?

• 16

• 22

• 18

• 12

7. Emma read 3 books last month. If she reads 'b' books this month and wants to read a total of 10 books by the end of the month, how many more books does she need to read?

• 7 - b

• b + 3

• b - 3

• 10 - b

8. A pizza is cut into 'p' slices. If 3 slices are eaten, there are 5 slices left. How many slices was the pizza cut into originally?

• 4

• 6

• 10

• 8

9. A school has 's' students. If 10 more students enroll, the total number of students becomes 150. How many students were there before?

• 130

• 140

• 150

• 120

10. Jake has 'j' stickers. If he gives away 7 stickers and now has 13 left, how many stickers did he have at the beginning?

• 20

• 15

• 18

• 25