8th Math Ch. 2 Review Y3

2-1 , 2-2 Adding and SubtractingRational Numbers

100

(-13) + (-4)

(-17)

200

(-12) - (-7)

(-5)

300

(-7 7/8)+ (-2 1/2)

-10 3/8

400

1.64 - 14.29

-12.65

500

-3^2+ (-3)^2

0

2-3 Multiplying and Dividing Rational Numbers

100

4(5)(-20)

-400

200

5/6 (-2/3)

-5/9

300

5/6 ÷(-2/3)

-5/4

400

5/6÷(-2/3)^2

15/8 or 1 7/8

500

(-5 (4 - (-2)))/(-3• 6

5/3 or 1 2/3

2-4 Distributive Property and Combining Like Terms

100

9m - 5m +3

4m + 3

200

2b + 8 - b + 2

b + 10

300

-5(w - 4)

-5w + 20

400

3/5(15t-2)

9t-6/5

500

(-3(6-3m)-(0.5(20m+3))

-m-19.5

2-6, 2-7 Probability

100

Find the probability for one roll of a die

P(3)

1/6

200

Find the probability for one roll of a die

P(not 5)

5/6

300

Suppose you toss a coin 4 times. What is the probability of getting exactly 3 heads?

1/4

400

Suppose you choose two numbers from a box containing ten cards with numbers 1-10. Find the probability.

P(1 and an odd number) with replacing the card

1/20

500

Suppose you choose two numbers from a box containing ten cards with numbers 1-10. Find the probability.

P(6 then an even number) without replacing the card

2/45