(Mul) F10dx
March 6, 2012 | 
Author 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 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 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 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 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 »