Categories
Addition Subtraction Speed Math Subtracting from multiples of 10

[Speed Math] SUBTRACTING FROM MULTIPLES OF 10

Here’s an example of a SPEED MATH shortcut for SUBTRACTING FROM MULTIPLES OF 10 : (AS) N10-M from the ADDITION SUBTRACTION category.

Subtracting from multiples of 10

When can I use this method?

For subtracting any number from multiples of 10n.

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pdf Download Practice sheet for SUBTRACTING FROM MULTIPLES OF 10

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Notes –

  1. This method uses the concept of borrowing from adjacent digits of the number, but instead of doing so at every state in the subtraction; it gives the borrowed values right at the first step.
  2. Make sure to note how the Minuend is converted.
  3. It allows a faster, easier and mistake proof way of subtracting numbers.


Related Shortcuts –

None

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Categories
Addition Subtraction Speed Math Subtraction using Addition

[Speed Math] SUBTRACTION USING ADDITION

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

Adding using Subtraction

When can I use this method?

For subtracting any numbers.

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[starrater tpl=10]

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pdf Download Practice sheet for SUBTRACTION USING ADDITION

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Notes –

  1. This method uses the concept of rounding up the Subtrahend to a number that is easier to subtract and then compensating the extra difference subtracted by adding it back to the answer.
  2. It allows a faster, easier and mistake proof way of subtracting numbers.


Related Shortcuts –

Adding using Subtraction: (AS)N+M(-)

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Categories
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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[starrater tpl=10]

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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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