7th Grade 1st Quarter Final Review

Adding and Subtracting Rational Numbers

100

-16 + 8

-8

200

8.50-6.25

2.25

300

1/4 - 7/8

-5/8

400

(-4)-7

-11 

500

-54.26 + (-15.42)

69.68

Multiplying and Dividing Rational Numbers

100

16 x -12

-192

200

40 / -5

-8

300

(-6/7) x (-3/4) 

9/14

400

-8.9 x 1.4

-12.46

500

(-8/9) / (2/3)

-4/3 or -1(1/3)

Combining Like Terms

100

-7d + 2x + 2d -x

-5d + x

200

-2r + 3r -8r

-7r

300

7.8x - 2.4r - 7.1x

0.8x - 2.4r

400

(1/8)s + (3/8)s + (7/8)r

(1/2)s + (3/8)r

500

7.8c + 6p -3.4c - 10

4.4c + 6p - 10

Distributing Property

100

-2(x+4)

-2x - 8 

200

3(2x+6)

6x + 18

300

-2(4x+12) -2x

-10x - 24

400

-6(-2x -5)

12x + 30

500

1/2(2x+6)

x+3

Solving for x

100

-2x = 10

x = -5

200

x+10=24

x = 14

300

-5x+9=29

x=-4

400

(x/4) + 5 = 25

x = 80

500

2(4x+10)=60

x=5