Math Review

Exponents

100

When you see the following expression, what is the big number called and what is the little number on top of it called?

2⁴

https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-exponents/v/introduction-to-exponents

200

How can you rewrite 9² in expanded form?

300

How can you rewrite the following in exponential form?

7 x 7 x 7 x 7 x 7 

400

What is the value of:

8⁴

https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-exponents/v/introduction-to-exponents

500

What is the value of:

2³ + 3² - 4²

https://www.khanacademy.org/math/pre-algebra/pre-algebra-exponents-radicals/pre-algebra-exponents/v/introduction-to-exponents

Order of Operations

100

Simplify the following expression:

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

200

Simplify the following expression:

https://www.khanacademy.org/math/pre-algebra/pre-algebra-arith-prop/pre-algebra-order-of-operations/v/introduction-to-order-of-operations

300

3 + 4² * (3 + 2)

400

500

Adding Integers

100

-4 + -5

 

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

200

14 + -12

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

300

-10 + 15

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

400

-2 + -3 + 5

https://www.khanacademy.org/math/arithmetic/arith-review-negative-numbers/arith-review-add-negatives-intro/v/adding-negative-numbers

500

6 + (-2 + -5)

Distributive Property

100

8(4+2) = ?

48

200

5(x-3)

5x-15

300

7+9(2x-3)

18x-20

400

-3(-x-10)

3x+30

500

x + 10 -6(x-3x) +4

13x+14

Rate and Ratio

100

Balia knows that 6 cups of rice will feed 15 people.  How many cups of rice are needed to feed 135 people?

54 cups

200

A train in Japan can travel 813.5 miles in 5 hrs.  Find the unit rate in miles per hour

167.7 mi / hr

300

Arrange in fasted to slowest:

Abel reads 50 pages in 45 minutes; Brian reads 90 pages in 75 minutes; Charlie reads 175 pages in 2 hours

Charlie, Brian, Abel

400

An ice skater covered 1500 meters in 106 seconds.  What is her unit rate in meters per second

14.15 m per second

500

Arrange from most expensive to least expensive if they buy lunch 5 days per week:

Alice spends $3 per day; Betty spends $25 every 2 weeks; Cindy spends $75 per month (assume 4 weeks in a month)

Cindy, Alice, Betty