Math Review

Angles & Triangles

100

What are all angles in a triangle equal to 

180degress

200

The supplement to a 65 degree angle? 

115

300

If you have a right triangle legs of 12in and 16in, what is the hypotenuse? 

20in

400

What is the sum of the measures of all the angles in a regular decagon (ten sided figure)?

1440

(n-2)(180)

500

The angles in an isosceles triangle whose vertex angle is 40.

40, 70, 70

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

Big number - base number

little number - exponent or power

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

200

How can you rewrite 9⁴ without using an exponent?

9 x 9 x 9 x 9

(6561)

300

How can you rewrite the following in exponential form?

7 x 7 x 7 x 7 x 7 

7⁵

400

What is the value of:

8⁴

4096

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

1

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:

66 / 3 + 10 x 4

62

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:

3 x 3 / 9 + 4

5

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)

83

400

25 / 5 x (11 - 7) + 5²

45

500

3³ + (5² - 4²) / 3

30

Adding Integers

100

-4 + -5

 -9

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

200

14 + -12

2

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

300

-10 + 15

5

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

400

-2 + -3 + 5

0

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

500

6 + (-2 + -5)

-1

Order of Operations II

100

8(4+2) = ?

48

200

5(10 - 3)

35

300

7 + 9(2 - 3)

-2

400

-3 x 4 + (5 -2)

-9

500

5^{2 +} 3 - 30

-2

Fractions, %, and decimals

100

which is largest, 25%, 0.027, or 2/5?

2/5

200

Which is smallest, .23, 22%, or 1/5?

1/5

300

what is 236% written as a decimal?

2.36

400

what is 4/5 written as a percent?

80%

500

What is 0.34 written as a fraction?

34/100 or 17/50