[Speed Math] CHECKING ADDITION

Here’s an example of a SPEED MATH shortcut for CHECKING ADDITION: (Check) Add from the CHECKING ANSWERS category.

Make sure to check out SEED NUMBER CONCEPT to understand how Seed numbers are calculated.

When can I use this method?

For checking any Addition.

This method can also be used to check additions of more than 2 numbers.

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Download Practice sheet for CHECKING ADDITION

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Notes –

1. Make sure to check out SEED NUMBER CONCEPT to understand how Seed numbers are calculated.
2. Any time you come across a seed number values greater than 1-digit, reduce it to a single digit value using the seed number concept.
3. It is the fastest and easiest way to verify your answers.

Related Shortcuts –

Checking Division : (Check) Div

Checking Multiplication : (Check) Mul

Checking Subtraction : (Check) Sub

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