By Brita Immergut
The publication is an alphabetical dictionary and guide that provides mom and dad of hassle-free, center university, and highschool scholars what they should recognize to aid their teenagers comprehend the maths they're studying. The ebook is additionally utilized by scholars themselves and is appropriate for anyone who's reviewing math to take standardized assessments or different checks. international scholars, whose English-language arithmetic vocabulary has to be bolstered, also will take advantage of this booklet
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Extra info for How to Help Your Child Excel in Math
Sample text
Practice: How many centigrams are there in one gram? CENTRAL ANGLE Definition: An angle in a circle with the VERTEX at the center of the CIRCLE. Example: L A O B is a central angle. 0 is the center of the circle. How TO HELPYOURCHILD EXCEL AT MATH Practice: Name the central angle in the following: R CHORD Definition: A LINE SEGMENT (part of a straight line) that joins two points on a curve. Example: Practice: Can a chord go through the center of the circle? CIRCLE Definition: A CLOSED CURVE consisting of all the points that are at a fixed distance (the radius r ) from a certain point To draw a circle, use either a compass or a piece of string with a pencil connected to one end and a thumbtack to the other.
Practice: Find the first three common multiples of 6 and 9. COMMUTATIVE O P E R A T I O N S Definition: Operations in which the order of doing the operations does not matter. Addition and multiplication are commutative operations. Subtraction and division are not commutative operations. 5 (division) COMPLEMENTMY ANGLES Definition: Two angles whose measure adds up to 90°. Examples: 1) 20" and 70" (20 + 70 = 90) a and p are complementary angles. COMPLETING THESQUARE Definition: A method of adding a number to an expression in order to get a TRINOMIAL that can be rewritten-as-%PERFECT SQUARE.
The square of a is a2. See QUADRATIC EQUATIONS for cases when the coefficient of the x2-termis different from 1. Examples: 1) x2 + 6x + 9 = x 2 + 6x + 32= (x + 3)2 + 9 = x 2 -6x + 32 = (x-3)2 + ( y5) 2 = ( x - 5 2) x2 -6x 3 ) x2 - 5 x y)2 Practice: What constant terms should be added to the following expressions, so that the trinomials are perfect squares? a ) x2 + &Ic b ) x2 -81: +2 COMPLEX FRACTIONS Definition: A fraction in which either the NUMERATOR or the DENOMINATOR is itself a fraction. See also FRACTIONS.