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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 #141 : The Number System

Solve:

$-5\times3$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$5\times3=15$

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,

$-5\times3=-15$

Report an Error

Example Question #142 : The Number System

Solve:

$-6\times8$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$6\times8=48$

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,

$-6\times8=-48$

Report an Error

Example Question #143 : The Number System

Solve:

$-7\times-5$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$7\times5=35$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

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,

$-7\times-5=35$

Report an Error

Example Question #144 : The Number System

Solve:

$-8\times-2$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$8\times2=16$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

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,

$-8\times-2=16$

Report an Error

Example Question #21 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

Solve:

$-9\times-8$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$9\times8=72$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

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,

$-9\times-8=72$

Report an Error

Example Question #22 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

Solve:

$-10\times-2$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$10\times2=20$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

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,

$-10\times-2=20$

Report an Error

Example Question #143 : The Number System

Solve:

$-11\times-3$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$11\times3=33$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

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,

$-11\times-3=33$

Report an Error

Example Question #144 : The Number System

Solve:

$-12\times-4$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$12\times4=48$

In this particular case, do the negative numbers change our answer? There are a couple of rules that we need to remember when multiplying with negative numbers to help us answer this question:

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,

$-12\times-4=48$

Report an Error

Example Question #145 : The Number System

Solve:

$-1\times8$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$1\times8=8$

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,

$-1\times8=-8$

Report an Error

Example Question #145 : The Number System

Solve:

$-1\times9$

Possible Answers:

Correct answer:

Explanation:

We know the following information:

$1\times9=9$

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,

$-1\times9=-9$

Report an Error

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All Common Core: 7th Grade Math Resources

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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 #141 : The Number System

Example Question #142 : The Number System

Example Question #143 : The Number System

Example Question #144 : The Number System

Example Question #21 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

Example Question #22 : Interpret Products Of Rational Numbers And Understand Properites Of Operations: Ccss.Math.Content.7.Ns.A.2a

Example Question #143 : The Number System

Example Question #144 : The Number System

Example Question #145 : The Number System

Example Question #145 : The Number System

All Common Core: 7th Grade Math Resources

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