(Mul) LD5
October 18, 2011 | 
Author Here’s an example of a SPEED MATH shortcut for MULTIPLYING NUMBERS ENDING IN 5 : (Mul) LD5 from the MULTIPLICATION category.
When can I use this method?
For multiplying any 2-digit number with another 2-digit number such that the last digit of the multiplier and multiplicand is = 5. The first digits can be different.
For multiplying any 3-digit number with another 3-digit number such that the last digit of the multiplier and multiplicand is = 5. The initial 2 digits can be different.
You can also use this method to multiply numbers with unequal number of digits, i.e. multiplying a 2-digit number with a 3-digit number such that the last digit of the multiplier and multiplicand is = 5.
As long as finding the product of initial digits is easy enough, one can use this method to multiply numbers bigger than 2 or 3-digits.
Posted in (Mul) LD5, 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 ENDING IN 5 : (Mul) LD5 from the MULTIPLICATION category.
When can I use this method?
For multiplying any 2-digit number with another 2-digit number such that the last digit of the multiplier and multiplicand is = 5. The first digits can be different.
For multiplying any 3-digit number with another 3-digit number such that the last digit of the multiplier and multiplicand is = 5. The initial 2 digits can be different.
You can also use this method to multiply numbers with unequal number of digits, i.e. multiplying a 2-digit number with a 3-digit number such that the last digit of the multiplier and multiplicand is = 5.
As long as finding the product of initial digits is easy enough, one can use this method to multiply numbers bigger than 2 or 3-digits.
Posted in (Mul) LD5, 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 ENDING IN 5 : (Mul) LD5 from the MULTIPLICATION category.
When can I use this method?
For multiplying any 2-digit number with another 2-digit number such that the last digit of the multiplier and multiplicand is = 5. The first digits can be different.
For multiplying any 3-digit number with another 3-digit number such that the last digit of the multiplier and multiplicand is = 5. The initial 2 digits can be different.
You can also use this method to multiply numbers with unequal number of digits, i.e. multiplying a 2-digit number with a 3-digit number such that the last digit of the multiplier and multiplicand is = 5.
As long as finding the product of initial digits is easy enough, one can use this method to multiply numbers bigger than 2 or 3-digits.
Posted in (Mul) LD5, Multiplication, Speed Math | Tags: Math Tricks, Mental Math, Multiplication, Speed Math | No Comments »