Translating Sentences to Mathematical Expressions

The sum of a number and three

• x+3
• x-3
• x*3
• x÷3

Four times a certain number decreased by 1

• 4x+1
• 4x-1
• 4x*1
• 4x÷1

A certain number decreased by two

• x÷2
• x*2
• x-2
• x+2

Four increased by a certain number

• 4÷x
• 4*x
• 4-x
• 4+x
  4+x

A certain number decreased by three

• x+3
• x-3
• x*3
• x÷3

Six more than a number

• x+6
• x-6
• x*6
• x÷6

Twice a number decreased by three

• 2x+3
• 2x-3
• 2x*3
• 2x÷3

The difference of two and a number

• 2-x
• 2*x
• 2÷x
• 2+x

The sum of four times a number and three

• 4x+3
• 4x-3
• 3x+4
• 3x-4

The difference of nine times a  number and one

• 9x+1
• 9x-1
• x+9
• x-9