Mental calculation Essays

  • Calculator Essay

    1677 Words  | 4 Pages

    Mathematics can easily be titled as one of the most feared and detested subjects in the school system’s curriculum. Most times this mind set is developed in primary education and further influenced by society and last through one’s lifetime. As the importance of math is made significant, the appeal to make it easier becomes an attractive option. In the world we live today, convenience and speed tend to be the attributes that we find most appealing. Proponents of the use of calculator’s basic

  • Math Research Paper

    1462 Words  | 3 Pages

    Math Research Paper Since the 1980’s calculator use in the classroom has been a huge controversy between educators (Golden, 2000). It is becoming increasingly common to use calculators in the classroom on a regular basis. Some states allow students to use calculators on standardized tests and as part of the regular curriculum (Dion, 2001). Because we live in such a technologically changing world, hand held calculators have been far surpassed and can be purchased for as low as $4.00 each. This

  • Carl Gauss

    1527 Words  | 4 Pages

    alphabet. Carl then set to teaching himself how to read by sounding out the combinations of the letters. Around the time that Carl was teaching himself to read aloud, he also taught himself the meanings of number symbols and learned to do arithmetical calculations. When Carl Gauss reached the age of seven, he began elementary school. His potential for brilliance was recognized immediately. Gauss's teacher Herr Buttner, had assigned the class a difficult problem of addition in which the students were to

  • Growth Dynamics Of E. Coli In Varying Concentrations Of Nutrient Broth

    2664 Words  | 6 Pages

    of the drug/antibiotic chloramphenicol. A variety of OD readings were taken and calculations made to determine the number of cells present after a given time. Then two graphs were plotted, Number of cells per unit volume versus Time in minutes and Log of the number of cells per unit volume versus Time growth curve. The final cell concentration for the control was 619,500 cells/mL. Four media, after calculations, produced fewer cells than that of the control, these were: Chloramphenicol producing

  • Intel Knows Best? A Major Marketing Mistake

    1780 Words  | 4 Pages

    for not going public was that most people would never encounter any problems with the chip. Intel said that a spreadsheet user doing random calculations would only have a problem every 27,000 years, therefore they saw no reason to replace all of the defective chips. However if a user possessed a defective chip and could convince Intel that his or her calculations were particularly vulnerable to the flaw in the defective chip then Intel it would supply those people with a new chip. This attitude of 'father

  • The End Of The World

    508 Words  | 2 Pages

    the world of Armageddon. It is almost inevitable that the world and the human race end someday, but just how soon? Millennialists, people who believe that the world is going to end on a set date saying that the date will be May 5, 2000. If their calculations are right, then we only have 6 years to live. "Millennialisim has been present in just about every generation since the birth of Christ--and just about every crop of millennialists has been disappointed" 300 years ago, Nostradamas predicted all

  • Economy Shipping Company

    802 Words  | 2 Pages

    powered boat. The analysis assumed no operating cost in 1950. Although ESC was presumably still in service during this analysis, the costs associated with the project evaluation were not accounted for until 1951. It was also implicit in the NPV calculations that any upgrade required subsequent to 1950 could be performed without any interruption to the daily operations and were performed at the beginning of the year. Therefore, the stoker upgrade and the engine replacements were considered on Jan

  • Lord Kelvin (1824 - 1907)

    669 Words  | 2 Pages

    the sun. In collaboration with Hermann von Helmholtz, he calculated and published in 1853 a value of 50 million years. He also had an interest in the age of the earth, and he calculated that the earth was a maximum of 400 million years old. These calculations were based on the rate of cooling of a globe of matter after first solidification occurs ( such as the beginning of the earth). He also calculated that molecular motion stops at -273 degrees Celsius. He called this temperature absolute zero. Kelvin

  • Hazards from the Universe

    1076 Words  | 3 Pages

    still cause some concern. Barringer Crater in Arizona was formed from an iron meteor approximately 30-50 meters in diameter. Other such large meteors are often held accountable for the seemingly sudden extinction of dinosaurs. Based upon scientific calculations, three craters of at least 10 km are expected to form on the earth every million years. While these larger meteors are rare, any oncoming asteroid could be pushed off course by the use of rockets or explosives (Bray, 1999). Meteorites are dangerous

  • The Future of Computer Technology

    985 Words  | 2 Pages

    developed. The microprocessor can house thousands of transistors on an area the size of a pencil eraser. With the creation of the microprocessor(fig.2) came an explosion of computer technology. Now computers could be made to perform thousands of calculations a second and could fit on a desktop (fig.3). But could these computers think on their own and do things without being told? On a secondary level, yes. If a user gave a command to the computer, the computer could carry out a series of task and give

  • Mercury: A toxic poison

    3723 Words  | 8 Pages

    substantial quantities of this metal. Fossil fuel may contain as much as 1 ppm of mercury, and it is estimated that about 5000 tons of mercury per year may be emitted from burning coal, natural gas, and from the refining of petroleum products. Calculations based on the mercury content of the Greenland ice cap show an increase from the year 1900 to the present and suggest that the increment is related both to an increase in background levels of mercury in rainwater and to man made r... ... middle

  • The Formula of Succinic Acid

    2212 Words  | 5 Pages

    12 Mr when n = 1 1+16+16+12 (12+2) 12+16+16+1 = 104 Mr when n = 2 1+16+16+12 [(12+2) x2] 12+16+16+1 = 118 Mr when n = 3 1+16+16+12 [(12+2) x3] 12+16+16+1 = 132 Mr when n = 4 1+16+16+12 [(12+2) x4] 12+16+16+1 = 146 From these calculations I can see that I need between 104g and 146g in 1 litre to equal 1M. But I want the solution in 250cm3, so therefore I need to divide the weights by 4: n = 1 104 = 26g So I need between 26g and 36.5g in 250cm3 to make a 1M 4 solution.

  • Quantum Cumputers

    1412 Words  | 3 Pages

    fields of technology and research. It's roots can be traced back to 1981, when Richard Feynman noted that physicists always seem to run into computational problems when they try to simulate a system in which quantum mechanics would take place. The calculations involving the behavior of atoms, electrons, or photons, require an immense amount of time on today's computers. In 1985 in Oxford England the first description of how a quantum computer might work surfaced with David Deutsch's theories. The new

  • Business Worth: How Do You Calculate Goodwill?

    581 Words  | 2 Pages

    or methods of goodwill valuation. Once the value of goodwill is established, this amount is listed as an asset, aside from the tangible assets, in the business’ balance sheet. Below are some popular methods of calculating goodwill. Goodwill Calculation: How to Calculate Goodwill 1. Net Asset Method Add up the fair market value of all tangible assets of the business and subtract this value from the sale value to determine the value of goodwill. Goodwill = Purchase Price – Value of Net Assets

  • Automotive Technician Interview

    1220 Words  | 3 Pages

    or just occasionally? He indicated that math is applied every day and they could not to the job without it. They use measurement almost every hour of the day, with math calculations being very important as well. As he elaborated, the sizes of fasteners holding things together are a measurement, the correct size wrench

  • Mapping the Human Genome Vision

    1023 Words  | 3 Pages

    mapping of the human genome. They also provide the computational power needed to speed the calculations for each gene as well as producing maps and the such for genetic information on each chromosome (Smith 14). In fact, Compaq Computer Corporation built specific technology enabling completion of the Human Genome. In the future, computing power will become greater and greater allowing for faster calculations and analysis of sequencing data. Also, there will be new robotics, micro-fabrication technologies

  • American Oil Dependence

    1682 Words  | 4 Pages

    American Oil Dependence Since the oil embargo of 1977, there has been an increased awareness of our nation's energy security. As global population and energy consumption rise, the need for a stable energy supply has become a hot topic and a politically volatile issue. As our negative trade balance grows larger by the day, the United States finds itself in a rather precarious position. We are becoming more and more dependent on Middle East oil. Indeed, the U.S. Department of Energy (DOE)

  • The Life of Charles Babbage

    1166 Words  | 3 Pages

    London in 1816 and was active in the founding of the Royal Astronomical and the Statistical societies. He received his Masters in 1817 and began working as a mathematician, concentrating in calculating functions. It was his work with these complex calculations that led him to his most significant inventions: The Difference Engine and the Analytical Engine. By previous standards, these engines were monumental in conception, size, and complexity. In 1821, Babbage began the task of mechanizing the

  • Computers And Strategic Games

    4162 Words  | 9 Pages

    assist doctors and physicians in creating images of the interior of the human body. We are lucky and pleased that computers can perform these functions for us. But in doing them, computers show no intelligence, but merely carry out lengthy complex calculations while serving as our obedient helpers. Yet the question of whether computers can think, whether they are able to show any true intelligence has been a controversial one from the day humans first realized the full potential of computers. Exactly

  • Understanding Health Risk Calculations

    754 Words  | 2 Pages

    Understanding Health Risk Calculations Health risks are all around us. They are present all the time, even when we sleep. Understanding our chances of being affected by one risk or another is a little like understanding our chances of winning the lottery. Numbers are often used to describe both our health risks and our chances or probability of winning the lottery, but this is where the similarity ends. When you buy a lottery ticket, your chances of winning depend on the number of possible