 By James R. Milgram

ISBN-10: 0821814338

ISBN-13: 9780821814338

Best mathematics books

Read e-book online The Magic of Mathematics: Discovering the Spell of PDF

"The Magic of Mathematics" delves into the realm of rules, explores the spell that arithmetic casts on our lives, and is helping you find arithmetic the place you least count on it.

Whatever Happened to the Metric System?: How America Kept by John Bemelmans Marciano PDF

The yankee common approach of dimension is a special and abnormal factor to behold with its esoteric, inconsistent criteria: twelve inches in a foot, 3 ft in a backyard, 16 oz in a pound, 100 pennies to the buck. For whatever as elemental as counting and estimating the area round us, it sort of feels like a complicated software to exploit.

Injecting drug use is of significant challenge to either Western and constructing international locations, inflicting broad linked damage at either person and public healthiness degrees. This booklet presents readers with authoritative and functional details on injecting drug use and the healthiness results of this behaviour. contains topical concerns corresponding to needle fixation, transitions to and from injecting, and illicit drug use in felony settings.

Extra info for Algebraic and geometric topology. Proceedings of symposia in pure mathematics, V.32, Part.2

Sample text

Adding and Subtracting Fractions 2 — 4 You can’t add or subtract fractions unless they have the same denominator. If their denominators are different, you must find a common denominator for them. A common denominator for the fraction 2/3 and 1/2 must be found in order to add or subtract them. To find a common denominator, list the multiples of 3 and the multiples of 2. Some of your numbers will appear in both lists. One common denominator is 6. To add or subtract fractions, they must have the same denominator.

Everywhere on the curve is quadrilaterals. These include the the same distance from the point. parallelogram, the rhombus, the Diameter and Radius square, the rectangle, and the The distance all the way across trapezoid. the center of a circle is called the The sum of all the angles in a diameter. The distance from the quadrilateral is always 360°. center to the edge is the radius. face face face 90° 90° 90° 90° di am er An icosahedron et Polygons and Polyhedrons A polygon is a two-dimensional shape made of straight lines.

Instead, you can round it off. A number is rounded up if the next decimal is 5 or greater. The number stays the same if the next decimal is 4 or less. 024. Money is usually rounded off to the nearest penny. ” A percentage is the ratio of a number per 100. The percent symbol (%) shows that a number is a percentage. Twenty-five percent can be written as 25% and is equal to the ratio 25/100. An equivalent fraction to 25/100 is 1/4, or one-fourth. It is easy to write percentages with decimals. Just move the decimal point two places to the left.