Common Core: 6th Grade Math : Write Expressions that Record Operations with Numbers and With Letters : CCSS.Math.Content.6.EE.A.2a

Study concepts, example questions & explanations for Common Core: 6th Grade Math

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Example Questions

Example Question #42 : Algebra

Which of the following phrases can be written as the algebraic expression \displaystyle 99-7x?

Possible Answers:

The difference of a number and seven multiplied by ninety-nine

The correct answer is not given among the other responses.

Ninety-nine decreased by the product of seven and a number

The product of seven and a number decreased by ninety-nine

The difference of seven and a number multiplied by ninety-nine

Correct answer:

Ninety-nine decreased by the product of seven and a number

Explanation:

\displaystyle 99-7x is ninety-nine decreased by \displaystyle 7x

\displaystyle 7x is the product of seven and a number.

Therefore, the \displaystyle 99-7x is "ninety-nine decreased by the product of seven and a number".

Example Question #1 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Which of the following phrases can be written as the algebraic expression \displaystyle 9 (86 - x )?

Possible Answers:

Nine mutiplied by the difference of a number and eighty-six

The product of nine and a number subtracted from eighty-six

Eighty-six subtracted from the product of nine and a number

The correct answer is not given among the other responses.

Nine mutiplied by the difference of eighty-six and a number

Correct answer:

Nine mutiplied by the difference of eighty-six and a number

Explanation:

\displaystyle 9 (86 - x ) is nine multiplied by the expression \displaystyle 86-x.

\displaystyle 86-x is the difference of eighty-six and a number.

Subsequently, \displaystyle 9 (86 - x ) is "nine multiplied by the difference of eighty-six and a number".

Example Question #1 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Which of the following phrases can be written as the algebraic expression \displaystyle 76 - (x + 3) ?

Possible Answers:

The difference of a number and three added to seventy-six

The difference of three and a number added to seventy-six

Seventy-six subtracted from the sum of a number and three 

The sum of a number and three subtracted from seventy-six

The correct answer is not given among the other responses.

Correct answer:

The sum of a number and three subtracted from seventy-six

Explanation:

\displaystyle 76 - (x + 3) is \displaystyle x + \textrm{3} subtracted from seventy-six.

\displaystyle x + \textrm{3} is the sum of a number (\displaystyle x) and three.

Therefore, 

\displaystyle 76 - (x + 3) is "the sum of a number and three subtracted from seventy-six".

Example Question #2 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Select the correct expression for the phrase below.

Subtract \displaystyle 36 from \displaystyle x

 

Possible Answers:

\displaystyle x\times36

\displaystyle x-36

\displaystyle 36+x

\displaystyle 36\div x

\displaystyle 36-x

Correct answer:

\displaystyle x-36

Explanation:

The question tells us that we are going to subtract, so our expression must have a subtraction sign \displaystyle (-). We are taking \displaystyle 36 from \displaystyle x, thus the \displaystyle x is written first and the correct expression is \displaystyle x-36

Example Question #2 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Select the correct expression for the phrase below.

Subtract \displaystyle 7 from \displaystyle y

Possible Answers:

\displaystyle y\div7

\displaystyle 7+y

\displaystyle y-7

\displaystyle y+7

\displaystyle 7-y

Correct answer:

\displaystyle y-7

Explanation:

The question tells us that we are going to subtract, so our expression must have a subtraction sign \displaystyle (-). We are taking \displaystyle 7 from \displaystyle y, thus the \displaystyle y is written first and the correct expression is \displaystyle y-7

Example Question #3 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Select the correct expression for the phrase below.

Subtract \displaystyle m from \displaystyle 19

 

Possible Answers:

\displaystyle m-19

\displaystyle 19-m

\displaystyle m\times19

\displaystyle 19+m

\displaystyle m\div19

Correct answer:

\displaystyle 19-m

Explanation:

The question tells us that we are going to subtract, so our expression must have a subtraction sign \displaystyle (-). We are taking \displaystyle m from \displaystyle 19, thus the \displaystyle 19 is written first and the correct expression is \displaystyle 19-m

Example Question #3 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Select the correct expression for the phrase below.

Add \displaystyle 22 to \displaystyle y

 

Possible Answers:

\displaystyle 22-y

\displaystyle y+22

\displaystyle y\div22

\displaystyle 22\times y

\displaystyle y-22

Correct answer:

\displaystyle y+22

Explanation:

The question tells us that we are going to add, so our expression must have an addition sign \displaystyle (+). We are adding \displaystyle 22 to \displaystyle y, thus the correct expression is \displaystyle y+22

Example Question #3 : Write Expressions That Record Operations With Numbers And With Letters : Ccss.Math.Content.6.Ee.A.2a

Select the correct expression for the phrase below.

Add \displaystyle 37 to \displaystyle z

 

Possible Answers:

\displaystyle z-37

\displaystyle z\div 37

\displaystyle 37\div z

\displaystyle 37-z

\displaystyle z+37

Correct answer:

\displaystyle z+37

Explanation:

The question tells us that we are going to add, so our expression must have an addition sign \displaystyle (+). We are adding \displaystyle 37 to \displaystyle z, thus the correct expression is \displaystyle z+37

Example Question #572 : Grade 6

Select the correct expression for the phrase below.

Add \displaystyle p to \displaystyle 50

 

Possible Answers:

\displaystyle 50\div p

\displaystyle p-50

\displaystyle 50+p

\displaystyle 50-p

\displaystyle p\times 50

Correct answer:

\displaystyle 50+p

Explanation:

The question tells us that we are going to add, so our expression must have an addition sign \displaystyle (+). We are adding \displaystyle p to \displaystyle 50, thus the correct expression is \displaystyle 50+p

Example Question #573 : Grade 6

Select the correct expression for the phrase below.

Multiply \displaystyle q by \displaystyle 7

 

Possible Answers:

\displaystyle q\div 7

\displaystyle 7\div q

\displaystyle 7+q

\displaystyle q\times 7

\displaystyle q-7

Correct answer:

\displaystyle q\times 7

Explanation:

The question tells us that we are going to multiply, so our expression must have a multiplication sign \displaystyle (\times). We are multiplying \displaystyle q by \displaystyle 7, thus the correct expression is \displaystyle q\times 7

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