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Common Core: 7th Grade Math : The Number System

Study concepts, example questions & explanations for Common Core: 7th Grade Math

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All Common Core: 7th Grade Math Resources

7 Diagnostic Tests 110 Practice Tests Question of the Day Flashcards Learn by Concept

Example Questions

Example Question #318 : Grade 7

Solve:

-18*7

Possible Answers:

116

126

106

Correct answer:

Explanation:

When multiplying a negative number and a positive number, our answer is negative. Multiply normally. Answer is .

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Example Question #131 : The Number System

Solve:

-19*-21

Possible Answers:

399

279

409

Correct answer:

399

Explanation:

When multiplying two negative numbers, the answer is positive. Then multiply normally. Answer is 399 .

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Example Question #5 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

-12*92

Possible Answers:

1104

1114

Correct answer:

Explanation:

-12*92 When multiplying with a negative number, our answer is negative.

Answer is

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Example Question #6 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

-13*-24

Possible Answers:

322

312

302

Correct answer:

312

Explanation:

-13*-24 When multiplying with two negative numbers, our answer is positive.

Answer is 312

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Example Question #131 : The Number System

Solve:

$(-8)\times(-12)$

Possible Answers:

Correct answer:

Explanation:

When multiplying two negative numbers, the negative signs cancel each other out, making for a positive solution. If only one number is negative, the solution will be negative.

Therefore we can rewrite $(-8)\times(-12)$ as $8\times12$ , which is .

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Example Question #94 : Negative Numbers

Solve:

$-3\times4$

Possible Answers:

Correct answer:

Explanation:

First, since we are multiplying a negative value with a positive value, we need to realize the product is going to be negative. Next, we can multiply the values.

$3\times4=12$

Since the answer is negative, the answer is .

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Example Question #132 : The Number System

Solve:

$-1\times7$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$1\times7=7$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number
A negative number multiplied by a negative number will always equal a positive number

Thus,

$-1\times7=-7$

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Example Question #133 : The Number System

Solve:

$-2\times5$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$2\times5=10$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number
A negative number multiplied by a negative number will always equal a positive number

Thus,

$-2\times5=-10$

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Example Question #325 : Grade 7

Solve:

$-3\times2$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$3\times2=6$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number
A negative number multiplied by a negative number will always equal a positive number

Thus,

$-3\times2=-6$

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Example Question #326 : Grade 7

Solve:

$-4\times6$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$4\times6=24$

However, the changes our answer, in this particular case. There are a couple of rules that we need to remember when multiplying with negative numbers:

A negative number multiplied by a positive number will always equal a negative number
A negative number multiplied by a negative number will always equal a positive number

Thus,

$-4\times6=-24$

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Common Core: 7th Grade Math : The Number System

Study concepts, example questions & explanations for Common Core: 7th Grade Math

All Common Core: 7th Grade Math Resources

Example Questions

Example Question #318 : Grade 7

Example Question #131 : The Number System

Example Question #5 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

Example Question #6 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

Example Question #131 : The Number System

Example Question #94 : Negative Numbers

Example Question #132 : The Number System

Example Question #133 : The Number System

Example Question #325 : Grade 7

Example Question #326 : Grade 7

All Common Core: 7th Grade Math Resources

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