Written Calculation

  1. Step 1
     

  2. Step 2
    Use informal pencil and paper methods to support, record or explain HTU ± TU, HTU ± HTU. View step.

     
    Develop and refine written methods for column addition and subtraction for two whole numbers less then 1000, and for addition of more than two such numbers. View step.

  3. Step 3
    Extend efficient written methods to:
    • column addition/subtraction of two integers less than 10000; View step
    • short multiplication of HTU or TU by U; View step
    • long multiplication of TU by TU; View step
    • short division of HTU by U (with integer remainder). View step


     
    Use all four operations to solve simple word problems involving numbers and quantities including time, explaining methods and reasoning. View step.

  4. Step 4
    Extend written methods to:
    • column addition and subtraction of numbers involving decimals; View step
    • long multiplication of a three-digit by a two-digit integer; View step
    • short division of TU by U (mixed-number answer); View step
    • division of HTU by TU (long division, whole-number answer); View step
    • short division of numbers involving decimals. View step


     
    Identify and use the appropriate operations (including combinations of operations) to solve word problems involving numbers and quantities, and explain methods and reasoning. View step.

Steps 5 to 10