5th Grade Module 9 & 10 Review

What is the difference between an equation and an expression?

• An equation has an equal sign and an expression does not.
• An expression has an equal sign and an equation does not.
• This must be a trick! They are the same thing!
• One has variables and the other does not.

2(8+9b)

• 16+18b
• 25b
• 18b
• -16-18b

3(10-8x)

• 30x+24
• 30-24x
• 78x
• 24x

Sally's Shops sells clothes this weekend at 25% off. Which expression shows the cost of clothing, c, after discount?

• 0.25c

• .75c

• c + 0.75c

• $25

Coach Jenkins buys basketballs, b, for the team. The store is giving him a 35% off for being a coach. What would be the cost of the basketballs now?

• .35b

• 1.35b

• 0.65b

• 1.65b

Kayla found a coupon for 30% off Foot Locker. If she wants to buy shoes, s, how much will she spend?

• .3s

• .7s

• 1.3s

• $30

Princess wanted to buy a new tiara, t. She saw there was a sale for 15% tiaras. If she wants to buy some, what expression models this?

• 0.15t

• t - 0.15t

• 1.15t

• $15

x + .07x represents ...

• a decrease of 7%

• an increase of 70%

• an increase of 7%

• a decrease of 70%

Simplify the expression y - .25y

• 7.5y

• .26y

• 2.25y

• .75y

Write an expression: an increase of 10%

• x + 10

• x + 10x

• x + .10x

• 10 + x