Pre-Algebra : Operations and Properties

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #151 : Operations

Possible Answers:

Correct answer:

Explanation:

When a plus and minus sign meet, the sign becomes negative. Since  is greater than   and is negative, our answer is negative. We treat as a subtraction problem. Answer is .

Example Question #152 : Operations

Possible Answers:

Correct answer:

Explanation:

When a plus and minus sign meet, the sign becomes negative. Since  is greater than   and is negative, our answer is negative. We treat as a subtraction problem. Answer is .

Example Question #153 : Operations

Possible Answers:

Correct answer:

Explanation:

When a plus and minus sign meet, the sign becomes negative. Since  is greater than   and is positive, our answer is positive. We treat as a subtraction problem. Answer is .

Example Question #154 : Operations

Possible Answers:

Correct answer:

Explanation:

When a plus and minus sign meet, the sign becomes negative. When adding two negative numbers, we treat as an addition problem and add a minus sign in the end. Answer is .

Example Question #155 : Operations

Possible Answers:

Correct answer:

Explanation:

Just subtract normally. Answer is .

Example Question #156 : Operations

Possible Answers:

Correct answer:

Explanation:

When two minus signs meet, the sign becomes positive. It becomes an addition problem. Answer is .

Example Question #157 : Operations

Possible Answers:

Correct answer:

Explanation:

This is the same as adding two negative numbers. We treat as an addition problem and add the minus sign in the end. Answer is .

Example Question #158 : Operations

Possible Answers:

Correct answer:

Explanation:

When two minus signs meet, the sign becomes positive. Since  is greater than   and is positive, our answer is positive. We treat as a subtraction problem. Answer is .

Example Question #159 : Operations

Possible Answers:

Correct answer:

Explanation:

When two minus signs meet, the sign becomes positive. Since  is greater than   and is negative, our answer is negtaive. We treat as a subtraction problem. Answer is .

Example Question #160 : Operations

Possible Answers:

Correct answer:

Explanation:

When two minus signs meet, the sign becomes positive. We have two of the same numbers but with different signs. Answer is .

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