Expressions, Equations, and Inequalities

Mr. Santos wrote a verbal description on the board: fifteen less than the product of 7 and a number

Does the description represent an expression or equation?

• an expression, because it describes the quantity but does not show what it is equal to

• an expression, because the phrase does not contain the word "equal"

• an equation, because the phrase shows "less than"

• an equation, because the phrase describes the variable as "a number"

Glenn believes that 9 + 4 is a numerical expression. Is he correct?

• Yes, because it does not contain an equal sign or variable

• Yes, because it can be simplified

• No, because 9 + 4 is a numerical equation

• No, because expressions contain equal signs

Tags

CCSS.6.EE.A.2B

Derrick wrote a verbal description that is equivalent to 4/n + 5. What phrase could he have written?

• four and a number plus five

• a number divided by four added to five

• the quotient of four and five plus a number

• the quotient of four and a number added to five

Tags

CCSS.7.EE.A.2

CCSS.HSA.SSE.A.2

Ann determined that the expressions are always equivalent, because they both equal 11 when 1 is substituted for n. Is Ann correct?

4n + 7

3n + 8

• Yes, because 4(1) + 7 and 3(1) + 8 are both equal to 11

• Yes, because the expressions contain the same number of terms

• no, because the expressions are not equivalent for every number for n

• no, because when 1 is substituted for n, the solution is not 11

Tags

CCSS.6.EE.A.4

Which of the following verbal descriptions models an equation?

• the sum of a number and three

• the difference between 10 and a number is four

• the quotient of a number and two plus eleven

• the product of a number and four minus six

Tags

CCSS.6.EE.A.2A

Below are some expressions and equations. Which statement is true about them?

P. 1 - 8x = -7

Q. 5n = 34 + 0.5n

R. 2 + 3(9-1)

S. n + n = 2n

• P is an equation

• S is an expression

• R is an equation

• Q is an expression

Which of these verbal descriptions indicates an algebraic expression?

• the difference of 5 and three is two

• the sum of a number and three

• the product of two and three is six

Tags

CCSS.6.EE.A.2B

The number of dimes Albert has is 4 less than the number of quarters he has. Which equation CANNOT be used to relate Albert's number of coins, if d = number of dimes and q = number of quarters?

• d = q + 4

• d = q - 4

• q = d + 4

• q - d = 4

Tags

CCSS.6.EE.C.9

Determine which set of expressions is equivalent to the one listed below. There may be more than one right answer! Don't forget to plug in your secret number :)

5n + 7

• 5(n + 2)

• 7 + 5n

• 5 x 7 + 5 x 2

Tags

CCSS.6.EE.A.4

Determine which set of expressions is equivalent to the one listed below. There may be more than one right answer! Don't forget to plug in your secret number :)

3y - 3 + 5

• 3(y - 3) + 1

• 3(y - 1) + 5

• 3y - 8

Tags

CCSS.6.EE.A.4