Expressions

Using x for the mystery number, Write an expression for

3 more than the number

• 3-x

• x+3

• x-3

Using x for the mystery number, Write expression for

21 less than the number

• 21+x

• 21-x

• x-21

Using x for the mystery number, Write an expression for

the number subtracted from 50

• 50-x

• x-50

• 50+x

Using x for the mystery number, Write an expression for

the number with 8 added

• x+8

• 8-x

• x-8

• 15

• 12

• 18

• 21

Translate the phrase into an algebraic expression: "Seven less than twice a number."

Translate the following sentence into an equation: "Eight times a number, decreased by 13, is equal to 35."

y added to x

• x+y

• y-x

• x-y

6 more than 3 times a

• 6- 3a

• 6+ 3a

• 3a-6

half b

• b/2

• b+2

• b-2