Evaluating Expressions and Solving for Unknowns in Math

If x = 5, what is the value of 3x + 2?

• 12

• 20

• 17

• 15

A box contains y apples. If there are 8 boxes, how many apples are there in total? (Write an expression)

• 8y

• 64y

• y + 8

• 8y + 1

If a car travels at a speed of s miles per hour for t hours, how far does it travel? (Write an expression)

• s + t

• s * t

• s - t

• s / t

Maria has m marbles. If she buys 12 more, how many marbles does she have now? (Write an expression)

• m + 10

• m - 12

• m * 12

• m + 12

If p = 10, what is the value of 2p - 4?

• 16

• 8

• 20

• 12

A recipe calls for 3c cups of flour. If c = 2, how many cups of flour are needed?

• 8 cups

• 4 cups

• 6 cups

• 10 cups

If a book costs b dollars and you buy 4 books, how much do you spend? (Write an expression)

• 2b

• b+4

• 4b

• 16b

If j = 7, what is the value of 5j + 3?

• 50

• 28

• 38

• 45

A garden has g rows of flowers. If each row has 6 flowers, how many flowers are there in total? (Write an expression)

• g + 6

• g - 6

• g * 6

• g / 6

If k = 9, what is the value of 4k - 5?

• 15

• 40

• 31

• 25