Worksheet 3: Addition and Subtraction

A. Addition

  1. \(3x+5x\)

  2. \(7a+2a+4\)

  3. \((4y+3)+(2y+5)\)

  4. \((6m-2)+(3m+7)\)

  5. \((5p+2q)+(3p+4q)\)

  6. \((2x^2+3x)+(4x^2+x)\)

  7. \((7a-3b+2)+(-2a+5b+6)\)

  8. \((x^2+2x+1)+(3x^2-x+4)\)

B. Subtraction

  1. \(9x-4x\)

  2. \((8a+7)-(3a+2)\)

  3. \((6y+4)-(2y+9)\)

  4. \((9m-3)-(4m-8)\)

  5. \((7p+5q)-(2p+3q)\)

  6. \((6x^2+5x+4)-(2x^2+3x+1)\)

  7. Subtract \(3a-4b+2\) from \(8a+2b+9\).

  8. Subtract \(2y^2-3y+5\) from \(5y^2+y+8\).

C. Mixed practice

  1. Simplify \((3x+4)+(2x-7)-(x+1)\).

  2. Find the missing expression: \((4a+3)+\square=7a+8\).

  3. A rectangle has length \(3x+2\) cm and width \(x+1\) cm. Find its perimeter by adding all four sides.

  4. A ribbon is \(9y+8\) cm long. A piece measuring \(4y+3\) cm is cut off. Write a simplified expression for the length remaining.