Mathematics Practice

Which equation demonstrates the associative property of addition?

• A. 2 + (1 + 5) = (2 + 1) + 5

• B. 2(1 × 5) = (2 × 1)5

• C. 1 × 3 = 3 × 1

• D. 2(7 + 4) = 2 × 7 + 2 × 4

Using the information in the table, which equation demonstrates the linear relationship between x and y?

• y = 6x - 6

• y = 5x - 6

• y = 4x - 6

• y = 3x - 6

Using the table, which equation demonstrates the linear relationship between x and y?

• y = -6x - 6

• y = -5x - 6

• y = -4x - 6

• y = -3x - 6

Students board a bus at 7:45 a.m. and arrive at school at 8:20 a.m. How long are the students on the bus?

• 30 minutes

• 35 minutes

• 45 minutes

• 60 minutes

Which expression has only prime factors of 3, 5, and 11?

• 66 × 108

• 15 × 99

• 42 × 29

• 28 × 350

Robbie has a bag of treats that contains 5 pieces of gum, 7 pieces of taffy, and 8 pieces of chocolate. If Robbie reaches into the bag and randomly pulls out a treat, what is the probability that Robbie will get a piece of taffy?

• 1/7

• 1/5

• 5/7

• 7/20

Which figure is a concave polygon?

• [First figure]

• [Second figure]

• [Third figure]

• [Fourth figure]

Micah invites 23 friends to his house and is having pizza for dinner. Each pizza feeds approximately 4 people. Micah does not want a lot of leftovers. How many pizzas should he order?

• 5

• 6

• 7

• 8

Kim and Chris are writing a book together. Kim writes twice as many pages as Chris. Altogether, there are 240 pages in the book. Which equation shows how many pages Chris writes?

• 2 + 2p = 240

• p + 2p = 240

• 2p - p = 240

• p - 2p = 240

An ice chest contains 24 sodas, some regular and some diet. The ratio of diet soda to regular soda is 1:3. How many regular sodas are there in the ice chest?

• 1

• 3

• 18

• 24