Unit review

Adding Integers

100

−8+12

4

200

−15+(−7)

-22

300

23+(−17)

6

400

-5/6 + 2/3 

- 1/6

500

2 2/3 + (-1 1/6) 

1 1/2 

Subtracting Integers

100

5−(−9)

14

200

−3−11

-14

300

−6−(−14)

8

400

1 1/2 - 0.49

1.01 

500

-4.4 - (-1 1/2) 

-2.9

Multiplying Integers

100

(-6) x (-2) 

12

200

(3/4)(−3 1/5)

-2 2/5

300

(-2.655) x (18.44) 

-48.9582

400

.65 x 1 1/2 

0.975

500

-0.2 x -5/6 

1/6

Dividing Integers

100

-1 1/3 / (-1.6) 

5/6

200

-.04 / 0.25 

-4/25 OR -0.16

300

0.7 / -1 1/6 

-3/5 

400

-9/10 / -3/10 

3 

500

—.05 / (-5/8) 

2/25

Word problems

100

Javier had $305 in his bank account. His bank charges a fee of $7.50 each month. He makes no other deposits or withdrawals. How much money is in Javier's account at the end of three months?  

 $282.50

200

In the first round of a card game, Niki scored 20 points. Then, she lost 10 points on one turn and also lost 25 points on her final turn. What is Niki's final score?

-15 points

300

Arianna runs up 4.5 flights of stairs.How far will Arianna have to run down to represent an additive inverse? Explain

An additive inverse is the opposite of a number. If running up 4.5 flights is +4.5, then running down 4.5 flights is −4.5.

4.5+(−4.5)=0

 

400

A catering company loses $110 as a result of a delay. The 5 owners of the company must share the loss equally. What is each owner's share of the loss? (MD-Level 3)

-$22

500

A marathon is 26.2 miles long.

There is a water station every 11 miles along the race route and at the finish line. How many water stations are needed for this marathon?

21 water stations are needed