Addition Subtraction
September 12, 2010 | 
Author Here’s an example of a SPEED MATH shortcut for SUBTRACTION USING ADDITION: (AS) N-M(+) from the ADDITION SUBTRACTION category.
When can I use this method?
For subtracting any numbers.
Posted in (AS) N-M(+), Addition Subtraction, Speed Math | 
Tags: Addition Subtraction, Math Tricks, Mental Math, Speed Math | 
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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.
Posted in (AS) N+M(-), Addition Subtraction, Speed Math | Tags: Addition Subtraction, Math Tricks, Mental Math, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for SUBTRACTING FROM MULTIPLES OF 10 : (AS) N10-M from the ADDITION SUBTRACTION category.
When can I use this method?
For subtracting any number from multiples of 10n.
Posted in (AS) N10-M, Addition Subtraction, Speed Math | Tags: Addition Subtraction, Math Tricks, Mental Math, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for SUBTRACTION USING ADDITION: (AS) N-M(+) from the ADDITION SUBTRACTION category.
When can I use this method?
For subtracting any numbers.
Posted in (AS) N-M(+), Addition Subtraction, Speed Math | Tags: Addition Subtraction, Math Tricks, Mental Math, Speed Math | No Comments »
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.
Posted in (AS) N+M(-), Addition Subtraction, Speed Math | Tags: Addition Subtraction, Math Tricks, Mental Math, Speed Math | No Comments »