Posts Tagged ‘Speed Math’
March 13, 2012 | 
Author Here’s an example of a SPEED MATH shortcut for MULTIPLYING NUMBERS USING ALIQUOT METHOD : (Mul) NxM(Aq)
from the MULTIPLICATION category.
When can I use this method?
For multiplying any two numbers provided at least one of them can be converted to an Aliquot format.
Posted in (Mul) NxM(Aq), Multiplication, Speed Math | 
Tags: Math Tricks, Mental Math, Multiplication, Speed Math | 
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Here’s an example of a SPEED MATH shortcut for MULTIPLYING NUMBERS WITH FIRST DIGITS SUM 10 : (Mul) F10dx from the MULTIPLICATION category.
When can I use this method?
For multiplying any 2-digit number with another 2-digit number such that the sum of the first digits of the multiplier and multiplicand = 10 and the remaining digits of multiplier are same as that of the multiplicand.
For multiplying any 3-digit number with another 3-digit number such that the sum of the first digits of the multiplier and multiplicand = 10 and the remaining digits of multiplier are same as that of the multiplicand.
You cannot use this method to multiply numbers with unequal number of digits, i.e. multiplying a 2-digit number with a 3-digit number.
Posted in (Mul) F10dx, Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for MULTIPLYING 3-DIGIT NUMBERS NEAR A BASE NUMBER : (Mul) NrB3 from the MULTIPLICATION category.
When can I use this method?
For multiplying any 3-digit number with another 3-digit number such that the numbers are relatively near each other.
You may also use this method to multiply numbers a little farther away from each other as long as their differences from the Base number are easy to multiply.
Posted in (Mul) NrB3, Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for MULTIPLYING NUMBERS USING NEARBY METHOD : (Mul) NxM(Nr)
from the MULTIPLICATION category.
When can I use this method?
For multiplying any two numbers relatively near each other.
This method becomes a little difficult when the numbers are far apart.
Posted in (Mul) NxM(Nr), Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for CUBING 3-DIGIT NUMBERS NEAR A BASE: (Cub) NrB3 from the CUBING AND CUBE ROOTS category.
When can I use this method?
For cubing any 3-digit numbers.
The number can be either < or > a Base number.
Posted in (Cub) NrB3, Cubing and Cube Roots, Speed Math | Tags: Cubing and Cube Roots, Math Tricks, Mental Math, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for MULTIPLYING WITH 999 : (Mul) Nx999 from the MULTIPLICATION category.
When can I use this method?
For multiplying any number with 999.
Posted in (Mul) Nx999, Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for CUBING NUMBERS NEAR 1000 : (Cub) Nr1000 from the CUBING AND CUBE ROOTS category.
When can I use this method?
For cubing numbers near 1000.
The number can be either < or > 1000.
One can use this method to cube numbers away from 1000 as long as it is comfortable to cube the difference portions.
Posted in (Cub) Nr1000, Cubing and Cube Roots, Speed Math | Tags: Cubing and Cube Roots, Math Tricks, Mental Math, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for MULTIPLYING NUMBERS USING LINE INTERSECTION: (Mul) NxMy(Li)
from the MULTIPLICATION category.
When can I use this method?
For multiplying any number with any other number.
Ideally, the numbers should have digits of value less than 5. This, although not a restriction, but is helpful to draw out the lines clearly and count the intersection points properly.
Posted in (Mul) NxMy(Li), Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for CUBING NUMBERS NEAR 10 : (Cub) Nr10 from the CUBING AND CUBE ROOTS category.
When can I use this method?
For cubing numbers near 10.
The number can be either < or > 10.
One can use this method to cube numbers away from 10 as long as it is comfortable to cube the difference portions.
Posted in (Cub) Nr10, Cubing and Cube Roots, Speed Math | Tags: Cubing and Cube Roots, Math Tricks, Mental Math, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for CUBING 2-DIGIT NUMBER : (Cub) 2D from the CUBING AND CUBE ROOTS category.
When can I use this method?
For cubing any 2 digit number.
Posted in (Cub) 2D, Cubing and Cube Roots, Speed Math | Tags: Cubing and Cube Roots, Math Tricks, Mental Math, Speed Math | No Comments »