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Here’s an example of a SPEED MATH shortcut for SQUARING NUMBERS ENDING WITH 5 : (Sq) LD5dx from the SQUARING AND SQUARE ROOTS category.

When can I use this method?

For squaring 2-digit numbers or 3-digit numbers ending with 5.

One can also use this method to solve higher digit numbers as long as multiplication of numbers is easy enough.

Download Practice sheet for SQUARING NUMBERS ENDING WITH 5

Notes –

1. This method uses the concept (a + 5)² = [a (a + 10)] + 25, where ‘(a + 5)’ is the number ending with 5 and ‘a’ is the tens place value of that number.

Related Shortcuts –

None

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