Common Core: 7th Grade Math : Grade 7

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

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Example Questions

Example Question #461 : Grade 7

Solve: 

\displaystyle 24\div-3

Possible Answers:

\displaystyle -8

\displaystyle 8

\displaystyle -21

\displaystyle 21

\displaystyle -27

Correct answer:

\displaystyle -8

Explanation:

We know the following information:

\displaystyle 24\div3=8

However, the \displaystyle -3 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 divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle 24\div-3=-8

Example Question #462 : Grade 7

Solve: 

\displaystyle 27\div-3

Possible Answers:

\displaystyle 9

\displaystyle 24

\displaystyle 30

\displaystyle -9

\displaystyle -30

Correct answer:

\displaystyle -9

Explanation:

We know the following information:

\displaystyle 27\div3=9

However, the \displaystyle -3 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 divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle 27\div-3=-9

Example Question #463 : Grade 7

Solve: 

\displaystyle 56\div-8

Possible Answers:

\displaystyle -7

\displaystyle 9

\displaystyle 48

\displaystyle 7

\displaystyle -9

Correct answer:

\displaystyle -7

Explanation:

We know the following information:

\displaystyle 56\div8=7

However, the \displaystyle -8 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 divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle 56\div-8=-7

Example Question #464 : Grade 7

Solve: 

\displaystyle 64\div-8

Possible Answers:

\displaystyle 72

\displaystyle -8

\displaystyle -9

\displaystyle 7

\displaystyle 8

Correct answer:

\displaystyle -8

Explanation:

We know the following information:

\displaystyle 64\div8=8

However, the \displaystyle -8 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 divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle 64\div-8=-8

Example Question #465 : Grade 7

Solve: 

\displaystyle 72\div-8

Possible Answers:

\displaystyle 8

\displaystyle -9

\displaystyle 64

\displaystyle -64

\displaystyle 9

Correct answer:

\displaystyle -9

Explanation:

We know the following information:

\displaystyle 72\div8=9

However, the \displaystyle -8 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 divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle 72\div-8=-9

Example Question #466 : Grade 7

Solve: 

\displaystyle 80\div-8

Possible Answers:

\displaystyle -11

\displaystyle 10

\displaystyle 9

\displaystyle -72

\displaystyle -10

Correct answer:

\displaystyle -10

Explanation:

We know the following information:

\displaystyle 80\div8=10

However, the \displaystyle -8 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 divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle 80\div-8=-10

Example Question #467 : Grade 7

Solve: 

\displaystyle -40\div-5

Possible Answers:

\displaystyle 35

\displaystyle -7

\displaystyle -8

\displaystyle 9

\displaystyle 8

Correct answer:

\displaystyle 8

Explanation:

We know the following information:

\displaystyle 40\div5=8

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:

  • A negative number divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle -40\div-5=8

Example Question #468 : Grade 7

Solve: 

\displaystyle -45\div-5

Possible Answers:

\displaystyle -40

\displaystyle -9

\displaystyle -8

\displaystyle 9

\displaystyle 8

Correct answer:

\displaystyle 9

Explanation:

We know the following information:

\displaystyle 45\div5=9

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:

  • A negative number divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle -45\div-5=9

Example Question #469 : Grade 7

Solve: 

\displaystyle -50\div-5

Possible Answers:

\displaystyle -45

\displaystyle 10

\displaystyle 45

\displaystyle -10

\displaystyle 55

Correct answer:

\displaystyle 10

Explanation:

We know the following information:

\displaystyle 50\div5=5

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:

  • A negative number divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle -50\div-5=10

Example Question #470 : Grade 7

Solve: 

\displaystyle -55\div-5

Possible Answers:

\displaystyle -50

\displaystyle -11

\displaystyle 11

\displaystyle 10

\displaystyle -10

Correct answer:

\displaystyle 11

Explanation:

We know the following information:

\displaystyle 55\div5=11

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:

  • A negative number divided by a positive number will always equal a negative number, and a positive number divided by a negative number will always equal a negative number.
  • A negative number divided by a negative number will always equal a positive number 

Thus,

\displaystyle -55\div-5=11

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