Quiz 5 | Math 10/2 quiz

20 questions · Typed answersNot submitted

Show your work vertically on paper, then type your answers. All questions are below. Some questions have more than one answer box; complete every box.

Use a minus sign for negatives. Enter fractions as 3/4 and mixed numbers as 2 1/3. A negative mixed number such as -2 1/3 means negative two and one third. Equivalent exact fractions and decimals are accepted. Do not round unless a question asks for an estimate.

One final submission. Drafts save in this browser. After grading, your answers lock and corrections appear. Each question is worth 1 point; all of its boxes must be correct. Grading checks typed responses, not paper working.

Type ANY number that makes the sum less than 0. Many answers work; yours must make the statement true.

−3 25 + ____ < 0

One possible addend

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Evaluate. Type the exact answer.

31.4 − 9.76

Your answer

Without finding the exact sum, predict its sign. Type positive, zero, or negative.

−5 37 + 5 37

Sign of the sum

Type one word: positive, zero, or negative.

Evaluate. Type the exact answer.

23 + (−58)

Your answer

What is the additive inverse of this number?

−118

Additive inverse

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Model this sum on the horizontal number line. Start at 0. Type the coordinate of the first stop after the first addend, then the final stop after the second addend.

11 + (−16)

First stop

Final stop (sum)

The temperature begins at −4.8°C, rises 9.35 degrees, then falls 2.6 degrees. Write an addition/subtraction expression showing the starting temperature and both changes. What is the final temperature?

Numerical expression (show all three amounts)

Show all three amounts. Use +, − and parentheses; do not type units.

Final temperature (°C)

Evaluate. Type the exact answer.

9 13 − 5 56

Your answer

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Evaluate. Type the exact answer.

−48 − (−59)

Your answer

First estimate by rounding EACH addend to the nearest whole number and adding those rounded numbers. Then find the exact sum. Do not round the exact answer.

−15.14 + 7.86

Estimate (nearest-whole-number addends)

Exact sum

Evaluate. Type the exact answer.

4 56 + (−2 34)

Your answer

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Evaluate. Type the exact answer.

−59 + (−17)

Your answer

Evaluate. Type the exact answer.

−0.85 + (−7.065)

Your answer

Evaluate. Type the exact answer.

−6 − 8 − (−19)

Your answer

Evaluate. Type the exact answer.

910 − 512

Your answer

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Evaluate. Type the exact answer.

−1315 + 13

Your answer

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Evaluate. Type the exact answer.

−8 + 45 + 8 + (−45) + (−17)

Your answer

Evaluate. Type the exact answer.

16.08 + 7.935

Your answer

Evaluate. Type the exact answer.

2 710 + 3 45

Your answer

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

Evaluate. Type the exact answer.

85 + 712

Your answer

Fraction: 3/4. Mixed number: 2 1/3. Negative mixed number: -2 1/3.

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