Math Review Grade 7

Combine 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

switcharoo

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

300

-10 - 15

-25

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

- 4 - (-10)

-14

Multiplying/Dividing Integers

100

- 2 x 4

-8

Switcharoo

200

15/3

5

double

300

- 2 x - 7

14

400

30/ -5 

-6

500

-8(10/2)

-40

switcharoo

Mixed Review

100

A right triangle has an angle that measures 43 degrees. Find the measure of the third angle.

47 degrees

200

A submarine is going to dive 770 feet below the surface. Then the sub is going to rise 492 feet. How far below the surface is the sub?

278 below surface

300

3y + 2 = 32

10

400

Combine Like Terms:

4y + 3z - 2y - 5z

2y - 2z

500

35 is what percent of 50? 

70%

Rational Numbers

100

What is an Improper Fraction?

A fraction where the numerator is larger than the denominator.

200

2/5 - 1/5

3/5

300

True or False:

Pi is a rational number.

False.

400

Put these in order from greatest to least:

-5. 2, 2. 5, 5.5, 1.3

5.5

2.5

1.3

-5.2

500

True or False:

1/3 is an irrational number.

false

Substitution

100

Evaluate for when x = 8

4x - 2 

30

200

Evaluate for when m = 2 

18/m + m

11

Double

300

Evaluate for p=-5

p + 7 x 3 

6

400

Evaluate for a = 3 and b = 4 

a - 3b + 2

- 7 

500

Evaluate for x = 3 

x² - 4x 

-3