Multiplication in Binary

Learn how to multiply numbers in binary.

Multiplication technique

Multiplication in binary has three basic operations:

  • 1×1=11 \times 1 = 1
  • 1×0=01 \times 0 = 0
  • 0×0=00 \times 0 = 0

The rest of the technique is to apply the decimal method of multiplication; i.e., to stack up the individual numbers and multiply digit by digit, adding up the final answers. Let’s see an illustration with a few examples.

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