Translating Expressions and Equations Sheila

Three less than twice a number

• 2x-3

• 3x-2

• 3-2x

• 2-3x

A number squared increased by 1

• 1+√2

• x²+1

• x²-1

• _{√2 +1}

The difference of a number and 7

• 7-x

• x+7

• x/7

• x-7

The quotient of a number and -2

• x/-2

• -2/x

• x*-2

• x/2

The sum of a number and 4

• 4+x

• x+4

• x/4

• 4+4

Two times the sum of a number and 5 is 20

• 2(x+5)=20

• (2x)+5=20

• 2x+(x+5)=20

• x+x+5=20

Four times the difference of a number and 7 is 32

• 4(x-7)=32

• 4x-7=32

• 4-x-7=32

• (4x)-x+7=32

Erik ran 3 less than 5 times the distance that Kerry, k, ran. Which expression represents how far Erik ran?

• 3 - 5k

• 5k - 3

• 5 (3-k)

• 5 (k-3)

Which expression correctly represents that Jaime walked 7 miles fewer than 3 times the number of miles (r) that Robert walked.

• 3(r-7)

• 3r - 7

• 7(3-r)

• 7 - 3r

Kalia buys 5 items that cost d dollars each. She gives the cashier $60. Which expression represents the change she should receive?

• 60 - 5d

• 60 - d

• 60 + 5d

• 5d - 60