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Addition Subtraction Addition using Subtraction Speed Math

[Speed Math] ADDING USING SUBTRACTION

Here’s an example of a SPEED MATH shortcut for ADDING USING SUBTRACTION: (AS) N+M(-) from the ADDITION SUBTRACTION category.

Subtracting using Addition

When can I use this method?

For adding any numbers.

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pdf Download Practice sheet for ADDING USING SUBTRACTION

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Notes –

1. This method uses the concept of rounding up a number to make it easier to add and then compensating the extra addition by subtracting the round up value from the answer.

2. It allows a faster, easier and mistake proof way of adding numbers.

Related Shortcuts –

Subtracting using Addition: (AS) N-M(+)


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