same sign, so the answer is positive: The chapter quiz in the next section tests you on your skills working with negative numbers.
Whaddya Know? Chapter 4 Quiz
In the 26 quiz questions that follow, evaluate by performing the operations as indicated.
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Answers to Chapter 4 Quiz
1 −1. Find the difference; the answer is negative because 9 is farther from 0 than 8 on the number line:
2 6. Drop the negative sign:
3 −4. Find the difference; the answer is negative because 6 is farther from 0 than 2 on the number line:
4 −15. The signs are the same, so drop the negative signs and find the sum. The answer is negative:
5 30. Drop the negative signs and multiply. The product is positive, because the signs are the same:
6 −5. Drop the negative sign and divide. The answer is negative, because the signs are different:
7 −1. Change the subtraction to addition and the negative 6 to +6. Then find the difference. The answer is negative, because the newly adjusted signs are different and 7 is farther from 0 than 6 on the number line:
8 4. Find the difference. The result is positive, so applying the absolute value keeps it a positive answer:
9 10. Find the difference, because the signs are different. The answer is positive, because 19 is farther from 0 on the number line:
10 5. Drop the negative signs and divide. The answer is positive, because the signs are the same:
11 0. Change the subtraction to addition and the second −1 to +1. Then find the difference:
12 9. First, find the difference of the numbers in the absolute value symbols. The sign of the difference is negative because 13 is farther from 0 than 4 on the number line. Evaluating the absolute value gives you a positive result:
13 −16. Drop the negative signs and find the sum of the two numbers. The answer is negative, because the signs are the same:
14 8.
