7.7 - Writing Expressions

Write the algebraic expression for 'the sum of a number and 5'.

• x / 5

• x * 5

• x + 5

• x - 5

Translate the phrase 'twice a number' into an algebraic expression.

• 2x

• 2 + x

• 2 - x

• x * 2

Simplify the expression 4(n-7) + 8

• 4n - 20

• 4n - 36

• 4n + 36

• 4n + 20

Simplify the expression 4(3n - 2) + 5n

• 17n - 8

• 12n - 3

• 17n + 8

• 12n + 5

Write the algebraic expression for 'the product of a number and 9'.

• 9 + x

• x / 9

• 9 - x

• 9x

Translate the phrase 'the difference between a number and 3' into an algebraic expression.

• 3 - x

• x - 3

• 3x

• x + 3

Simplify the expression 2(2n + 1) - 7.

• 2n - 7

• 4n - 5

• 2n - 5

• 4n -9

Write the algebraic expression for 'the quotient of a number and 6'.

• 6m

• m + 6

• m - 6

Translate the phrase 'the sum of twice a number and 4' into an algebraic expression.

• 2x * 4

• 2x - 4

• 2x + 4

• 2x / 4

Match the verbal expression to its algebraic expression.

• 6(x + 17)

• 17 less than six times a number
• 6x + 17

• 17 more than six times a number

• six times the sum of a number and 17

• x + 6 = 17

• One-sixth the difference of a number and 17

• 6x - 17

• Six more than a number is 17