Adding and Subtracting Rational Numbers

1.

Multiple Choice

1 min

1 pt

3 + -7

10

4

-10

-4

2.

Multiple Choice

1 min

1 pt

-14 + (-3)

-17

11

-11

17

3.

Multiple Choice

1 min

1 pt

-22 + (-9)

-11

-31

11

31

4.

Multiple Choice

1 min

1 pt

A diver was 40 feet below the surface of the water. A fisherman was casting off a dock right above the diver that was 12 feet above the surface of the water. How far apart are the diver and the fisherman?

28 feet

-28 feet

52 feet

-52 feet

5.

Multiple Choice

1 min

1 pt

At 2pm, the temperature was 15 degrees. By midnight, the temperature dropped by 30 degrees. What is the temperature at midnight?

45 degrees

-45 degrees

15 degrees

-15 degrees

6.

Multiple Choice

1 min

1 pt

45 + (-12)

33

-33

57

-57

7.

Multiple Choice

1 min

1 pt

-6.5 + (-0.5)

-7

7

6

-6

8.

Multiple Choice

1 min

1 pt

34.5 + (-7)

-41.5

41.5

-27.5

27.5

9.

Multiple Choice

1 min

1 pt

-7.8 + (-0.8)

8.6

-8.6

7

-7

10.

Multiple Choice

1 min

1 pt

⅗+(−⅕)=

⅖

−⅖

⅘

11.

Multiple Choice

1 min

1 pt

-1.5 + 4

5.5

2.5

1.1

1.9

12.

Multiple Choice

1 min

1 pt

-3.133 + -0.24

3.373

2.893

-3.373

-2.893

13.

Multiple Choice

1 min

1 pt

¼ + -¾

1

-1

-1/2

1/2

14.

Multiple Choice

1 min

1 pt

-8⅚ + -2⅕

-11 1/30

11 1/30

-10 6/11

10 6/11

15.

Multiple Choice

1 min

1 pt

-½ + ⅔

3/5

1/6

1

3/5

16.

Multiple Choice

1 min

1 pt

Make sure your final answer is in simplest form!

-5/3

-10/12

0

10/12

17.

Multiple Choice

1 min

1 pt

The elevation of the Dead Sea is about 1,310 feet below sea level. Which integer represents this elevation?

-1,310

-131

131

1,310

18.

Multiple Choice

1 min

1 pt

What is the value of | –7 |?

7

– | –7 |

14

–7

19.

Multiple Choice

1 min

1 pt

-40 + 15.05=

55.05

24.95

-24.95

14.65

20.

Multiple Choice

1 min

1 pt

¼ − (-¾)=

-1/2

4/0

1

None of the above

21.

Multiple Choice

1 min

1 pt

−28+(−8)=

36

−36

−20

20

22.

Multiple Choice

1 min

1 pt

-7 - 2=

-9

9

5

-5

23.

Multiple Choice

1 min

1 pt

19 - (-19)=

0

36

26

38

24.

Multiple Choice

1 min

1 pt

-8 - (-4) =

12

-12

4

-4

25.

Multiple Choice

1 min

1 pt

-7 - 2=

-9

9

5

-5

26.

Multiple Choice

1 min

1 pt

Make sure your final answer is in simplest form!

-1/2

-11/8

-22/32

27.

Multiple Choice

1 min

1 pt

Make sure your final answer is in simplest form! (Hint: use subtraction method)

-1

-1/2

-3/5

28.

Multiple Choice

1 min

1 pt

-5 − 9

4

14

45

None of the above

29.

Multiple Choice

1 min

1 pt

-4 − (-3)

-1

-7

12

None of the above

30.

Multiple Choice

1 min

1 pt

-0.3 − (-0.9)

-1.2

1.2

0.6

None of the above

31.

Multiple Choice

1 min

1 pt

Decide whether the following statements is always true, sometimes true, or never true:
"Subtracting a negative number is the same thing as adding the opposite of that negative number"

Always True

Sometimes True

Never True

32.

Multiple Choice

1 min

1 pt

1

2 1/3

2

3 1/3

33.

Multiple Choice

1 min

1 pt

-23.4 - 3.4=

-20

26.8

-26.8

20

34.

Multiple Choice

1 min

1 pt

⁸/₁₅ + (-⁶/₁₅)

14/15

-2/15

2/15

-14/15

35.

Multiple Choice

1 min

1 pt

-5.3 + (-8.7)

14

-3.4

3.4

-14

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