Mr. Janak's Math

3-Digit by 2-Digit Multiplication

Master the standard algorithm for multiplying multi-digit numbers, step by step.

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Set Up The Problem

Enter the numbers you want to multiply. You can include decimals.

How the Standard Algorithm Works

  1. Multiply the numbers as if they were whole numbers.
  2. Count the total number of decimal places in the original numbers.
  3. Place the decimal point in the final answer so it has that many decimal places.