Pre-Algebra : Pre-Algebra

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #192 : Operations

Possible Answers:

Correct answer:

Explanation:

The numbers are positive. We just multiply. Answer is 

Example Question #193 : Operations

Possible Answers:

Correct answer:

Explanation:

There is a negative number and zero. Regardless whether the number is positive or negative, anything multiplied by zero is always zero. Answer is .

Example Question #194 : Operations

Possible Answers:

Correct answer:

Explanation:

We have one positive and one negative number.

When multipled, our answer is negative.

The product is .

Example Question #197 : Operations And Properties

Possible Answers:

Correct answer:

Explanation:

We have two negative numbers. When multiplied, the answer is positive.

          

   

        

The product is .

Example Question #201 : Operations And Properties

Possible Answers:

Correct answer:

Explanation:

We have two negative numbers and one positive number. We multiply from left to right. Two negative numbers multiplied make a positive number. Two positive numbers multiplied is also positive.

Now the expression becomes,

Answer is .

Example Question #202 : Operations And Properties

Possible Answers:

Correct answer:

Explanation:

We have three negative numbers and one positive number. We multiply from left to right. Two negative numbers multiplied makes a positie number. However, that positive number multiplied by a negative number is a negative number. The same applied when multipled with a positive number.

Now our expression becomes,

.

Finally the expression becomes,

.

Our answer is .

Example Question #201 : Operations

Possible Answers:

Correct answer:

Explanation:

The numbers are positive. We just divide.

Answer is 

Example Question #202 : Operations

Possible Answers:

Correct answer:

Explanation:

We have one positive and one negative number. When divided, our answer is negative.

The quotient is .

Example Question #203 : Operations

Possible Answers:

Correct answer:

Explanation:

We have two negative numbers. When divided, the answer is positive.

The quotient is .

Example Question #24 : Multiplication And Division

Possible Answers:

Correct answer:

Explanation:

We have two positive numbers and one negative number. We  work from left to right. When a positive number is divided by a negative number, the answer is a negative number. The same applied when divided by a positive number.

Now the expression becomes,

.

Answer is .

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