FTCE General Knowledge- Math(Verified)Rated To Pass!!

Rational # Can be expressed as the ratio of two integers, where B is not equal to zero Integers Positive and negative whole numbers and zero Whole numbers Natural numbers and zero Natural numbers Counting numbers not including zero or negative Irrational numbers Real numbers that cannot be written as the ratio of two integers - they are infinite, not repeating decimals--- square root of 5 or pi -3...... Fraction An expression of numbers in the form of X/Y where X =the numerator and Y # the denominator 3/4 Mixed number Has an integer part and fraction part 5 2/3 Percent Means per 100 written with a percentage sign 10% = 10/100=1/10 Greatest common factor Largest number that is a factor of all members problem. Can be no larger than the smallest number of the problem - if smallest number in the problem is not a factor, continue increasing smaller until you find a common factor. GCF of 12, 20, 36 - 4 Least common multiple Smallest number of a group of numbers that all given numbers will divide into evenly - will always be the largest of the given numbers or a multiple of the largest 20, 30, 40 - largest is 40, but 30 won't divide into 40 evenly, so 120 is the only number that all will divide evenly Composite number Whole numbers that have two or more factors. 9-1,3,9 Prime numbers Whole numbers greater than 1 that have only 2 factors- 1 and itself Perimeter Some of the length of the sides of the polygon Area Number of square units covered by a polygon Rectangle Area formula - LW Perimeter formula - 2(L + W) Triangle Area formula - 1/2 bh Perimeter formula - A+ B+ C Parallelogram Area formula - BH Perimeter formula - some of length of sides Trapezoid 1/2BH (A+ B) Circumference The distance between a circle - pi -3.14 - 22/7 C=2pir or C=pid Polygon Simple, closed, two dimensional figure to post a blind statements - named according to the number of sides they have Quadrilateral Four Sides - some of angles is 360° Trapezoid Quadrilateral with exactly one pair of parallel sides Isosceles trapezoid Nonparallel sides are congruent Parallelogram Quadrilateral with two pairs of parallel sides - diagonals bisect each other - each diagonal divides parallelogram into two congruent triangles Rectangle Parallelogram with the right angle Rhombus Parallelogram with all sides equal in length Square Rectangle with all sides equal in length Triangle Polygon with three sides - classified by links of sides and types of Bengals Acute triangle Has exactly 3 acute angles that measure less than 90° Right triangle One right angle - one acute angle that measures less than 90° Obtuse triangle One angle between 90° and 180° Equilateral triangle All three sides are the same length Isosceles triangle A triangle in which two sides are the same length Scalene triangle The triangle in which no sides are the same length Acute angle An angle that measures less than 90° Right angle An angle that measures 90° Obtuse angle An angle that measures between 90° and 180° Cylinder Hey space figure that has two parallel, congruent circular bases Sphere Space figure having all its points in the same distance from the center Cone A space figure having a circular base and a single vertex Pyramid Space figure with a square base and four triangle shaped sides Tetrahedron If foresighted space triangle: each face is a triangle Prism Is based figure with two congruent, parallel bases that are polygons Ratio The comparison of two numbers Proportion An equation in which one fraction is set equal to another 4/15=x/60 to solve, cross multiply (4)(60)=15x. 16=x Congruent figures Figures that have the same size and shape Similar Two figures that have the same shape Pythagorean theorem Given that any right triangle ABC the square of the hypotenuse is equal to the sum of the square of the other two sides. A squared plus B squared equals C squared Side a B squared is equal to BC squared plus a C squared