* More
direct links cannot not be given here because these sites are changed frequently.

These links open is a separate window so you do not lose your place here.

- No borrowing, no negative
numbers, this simple method makes subtraction easy.

- The standard multi-digit
subtraction procedure (algorithm) that is taught to most, if not all, students
requires that the student is capable of subtracting any single-digit number
from any number in the range of 10 to 19. For the student must be able
to "borrow" a "ten" from the digit to the left of the current one. In other
words, the strongest demand on the student's mathematical skill is the
ability to mentally subtract any single digit number from any number between
10 and 19, inclusively.

For the students who struggle with this requirement this new procedure provides an easier alternative. It required that the strongest subtraction skill is the ability to subtract any single-digit number from any single-digit number. It also requires the ability to add multi-digit numbers, a skill that students are assumed to possess before they are taught multi-digit subtraction.

This procedure does not employ borrowing. Instead it replaces the source number with a substitute from which the subtraction can proceed without borrowing. After the subtraction is finished, the result is adjusted by adding the number that was used to generate the substitute source number.

A bonus of this procedure is the fact the actual subtraction can proceed from left to right just as traditionally it is done from right to left. In fact, as long as digits are subtracted in their columns and subtraction is carried out in each and every column, the order is no longer relevant.

- How
to Find the Greatest Common Factor (GCF), Visually and Without any Calculation

This graphic method is completely visual and requires no computation. It makes use of relationship between geometry and arithmatic.

When given two integers,
** m**and

This alternative method
does not rely on knowing any common factors. It employs ** simple division**
and each division step is progressively simpler. Or, you may even use this
method

Also, this method has
** graphical
representation.** In other words, this method facilitate finding
the greatest common factor

**To see animated examples
click **Find
Greatest Common Factor, Examples**.**

- Fraction
Operations - Simple and Easy with the Grid Method

- The

Copyright © 1993-2008 MathVentures a Division of Ten Ninety, All Rights Reserved

Last Update: Feb 2., 2008