Multiplication
February 28, 2012 | 
Author 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 | 
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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 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 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 MULTIPLYING NUMBERS WITH FIRST DIGITS SUM 1000 : (Mul) F1000dx from the MULTIPLICATION category.
When can I use this method?
For multiplying any 4-digit number with another 4-digit number such that the sum of the initial digits of the multiplier and multiplicand = 1000 and the remaining digits of multiplier are same as that of the multiplicand.
For multiplying any 5-digit number with another 5-digit number such that the sum of the initial digits of the multiplier and multiplicand = 1000 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 4-digit number with a 5-digit number.
Posted in (Mul) F1000dx, Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for MULTIPLYING 4-DIGIT NUMBERS NEAR A BASE NUMBER : (Mul) NrB4 from the MULTIPLICATION category.
When can I use this method?
For multiplying any 4-digit number with another 4-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) NrB4, 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 WITH LAST DIGIT SUM 10: (Mul) S10dx 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 last 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 last 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) S10dx, 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 GRAPHICAL METHOD: (Mul) NxMy(Gp)
from the MULTIPLICATION category.
When can I use this method?
For multiplying any number with any other number.
Posted in (Mul) NxMy(Gp), 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 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 NUMBERS NEAR DIFFERENT BASE NUMBERS : (Mul) NrBpBsfrom the MULTIPLICATION category.
When can I use this method?
For multiplying any x-digit number with another x-digit number (numbers with equal digits) such that their differences from their respective Base number are easy to multiply.
Posted in (Mul) NrBpBs, Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »