Here’s an example of a SPEED MATH shortcut for ADDING USING SUBTRACTION: (AS) N+M(-) from the ADDITION SUBTRACTION category.
When can I use this method?
For adding any numbers.
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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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