Teach Your Kids Arithmetic - The Quick-Add - Part I by Joe Pagano
... In continuation of my series on arithmetic, I present here a topic that was one of the cornerstones in my book “Arithmetic Magic.” To fully understand how this concept aids one in arithmetic operations, we need to lay some foundational ideas first. The “Quick-Add” is an enormously valuable tool to help children master quick arithmetic, particularly applied to summing numbers. Today the calculator has crippled even the ablest students. Hardly a one knows his fundamental multiplication ...

Data Entry by Jennifer Bailey
... In automatic or electronic data processing the operations are performed by a computer device, capable of performing a series of arithmetic or logical operations. In distributed data processing some or all of the operations are performed in different locations at computer facilities connected by telecommunications links. In some companies the need for data entry is constant while for others there may be just a temporary requirement. Whatever the need may be, accurate and easily accessible ...

Teach Your Kids Arithmetic - Fractions, Those Devils! by Joe Pagano
... And these monsters are quite friendly when we perform the arithmetic operations of multiplication or division (which will not be discussed here; you’ll just have to wait until I write that article). However, add or subtract—now we’re talking serious business. Students would cringe at the thought of adding two fractions with unusually different denominators, not to mention three fractions with different bottoms. I guess “bottoms up” would not apply here.

History of the Computer - Computers and Technology by Michael Cooper
... The built-in operations were supposed to include everything that a modern general - purpose computer would need, even the all important Conditional Control Transfer Capability that would allow commands to be executed in any order, not just the order in which they were programmed. As people can see, it took quite a large amount of intelligence and fortitude to come to the 1990's style and use of computers. People have assumed that computers are a natural development in society and take them ...

The Hazard of Using Calculators at School by Victor Guskov
... Both my experience (32 years in the classroom) and my investigations (20 years of studies) shows that pupils with unsteady elementary mental computational skills (addition and subtraction within the limits of 20, multiplication and division within the limits of 100) have great difficulties while learning the other basic topics of arithmetic and algebra. In other words they are doomed to poor progress in school math. Even calculators cannot help them.

Teach Your Kids Arithmetic - The Teenage Number Trick by Joe Pagano
... Thus understanding numbers and how to work with them via arithmetical operations form the foundations for all of mathematics. In this article, I want to give you a tool that you can pass to your children. This tool will give them the ability to multiply what I call any two “teenage numbers.” Teenage numbers are simply the numbers from 13-19—teenagers. (The method also works if we include 11 and 12, but for these poor souls the name of the method doesn’t apply as they are “pre-teens.” The ...

Prognosis of Failure in School Math by Victor Guskov
... The limit values were calculated for the standard tables including 64 similar elementary operations. For final-year pupils of primary school (the multiplication table had been completely learnt a year and a half ago) the next limit values had been obtained: Addition – 11 minutes 02 seconds and not more than 4 errors. Subtraction – 11 minutes 35 seconds and not more than 4 errors. Multiplication – 9 minutes 46 seconds and not more than 3 errors. Division – 9 minutes 06 seconds and not more ...