Speed Math Squaring 3-digit Number Squaring and Square Roots


Here’s an example of a SPEED MATH shortcut for SQUARING 3-DIGIT NUMBER : (Sq) 3D from the SQUARING AND SQUARE ROOTS category.

Squaring 3-digit Number

When can I use this method?

For squaring any 3 digit number.

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pdf Download Practice sheet for SQUARING 3-DIGIT NUMBER

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Notes –

  1. Notice the way the individual values are added.
  2. This method uses the concept of (a + b +c)2 = a2 + b2 + c2 + 2ab + 2bc + 2ac

Related Shortcuts –

Squaring 2-digit Number: (Sq) 2D

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