Posts Tagged ‘Speed Math’
February 2, 2012 | 
Author 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 »
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 CHECKING SUBTRACTION: (Check) Sub from the CHECKING ANSWERS category.
Make sure to check out SEED NUMBER CONCEPT to understand how Seed numbers are calculated.
When can I use this method?
For checking any Subtraction.
This method can also be used to check problems with a combination of additions and subtractions also.
Posted in (Check) Sub, Checking Answers, LazyMaths, Speed Math | Tags: Checking Answers, Math Tricks, Mental Math, Speed Math | No Comments »
Here’s an example of a SPEED MATH shortcut for SQUARING 2-DIGIT NUMBERS NEAR A BASE : (Sq) NrB2 from the SQUARING AND SQUARE ROOTS category.
When can I use this method?
For squaring any 2-digit numbers.
The number can be either < or > a Base number.
Posted in (Sq) NrB2, Speed Math, Squaring and Square Roots | Tags: Math Tricks, Mental Math, Speed Math, Squaring and Square Roots | No Comments »
Here’s an example of a SPEED MATH shortcut for CUBING NUMBERS NEAR 100 : (Cub) Nr100 from the CUBING AND CUBE ROOTS category.
When can I use this method?
For cubing numbers near 100.
The number can be either < or > 100.
One can use this method to cube numbers away from 100 as long as it is comfortable to cube the difference portions.
Posted in (Cub) Nr100, 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 SQUARING NUMBERS NEAR 500 : (Sq) Nr500 from the SQUARING AND SQUARE ROOTS category.
When can I use this method?
For squaring numbers near 500.
The number can be either < or > 500.
One can use this method to square numbers away from 500 as long as it is comfortable to square the difference portions.
Posted in (Sq) Nr500, Speed Math, Squaring and Square Roots | Tags: Math Tricks, Mental Math, Speed Math, Squaring and Square Roots | 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 SQUARING 2-DIGIT NUMBERS NEAR A BASE : (Sq) NrB2 from the SQUARING AND SQUARE ROOTS category.
When can I use this method?
For squaring any 2-digit numbers.
The number can be either < or > a Base number.
Posted in (Sq) NrB2, Speed Math, Squaring and Square Roots | Tags: Math Tricks, Mental Math, Speed Math, Squaring and Square Roots | No Comments »
Here’s an example of a SPEED MATH shortcut for CUBING 2-DIGIT NUMBERS NEAR A BASE: (Cub) NrB2 from the CUBING AND CUBE ROOTS category.
When can I use this method?
For cubing any 2-digit numbers.
The number can be either < or > a Base number.
Posted in (Cub) NrB2, Cubing and Cube Roots, Speed Math | Tags: Cubing and Cube Roots, Math Tricks, Mental Math, Speed Math | No Comments »
