MATH GUIDE

October 10, 2010

There's a great website to visit at www.mathisfun.com

Statistics

Mode- the number that appears most frequently, the most likely number

Median- the number in the middle. Find this by ordering the numbers from smallest to greatest first.

Mean- the average. Add all of the numbers and divide by the amount of numbers added

Range-the difference between the smallest and the greatest number

Geometry

Quadrilateral- a polygon with 4 sides

Pentagon- a polygon with 5 sides

Hexagon- a polygon with 6 sides

Octagon- a polygon with 8 sides

Polygon- a shape with three or more angles that does not cross, is not open, and has no curved lines

Parallelogram- a quadrilateral with both pairs of opposite sides parallel

Right angle- measures 90 degrees

Ray- illustrated with a dot on one side and an arrow on the other

Line-both sides go on forever, illustrated with an arrow on each side

Line segment- both sides have endpoints

Order of Operations

PEMDAS- parentheses, exponents, multiplication, division, addition, subtraction

Fraction Equivalencies

1/4= .25

1/2= .5

3/4= .75

1/1= 1

Decimal Place Values

.5 = tenths

.05 = hundredths

.005 = thousandths

.0005 = ten thousandths

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COMMENTS

Thanks Ms. Heather this does help a lot. Appreciate

Kris mom 1:53PM 04/27/11

Thanks -- the median had me flummoxed, and I'm grateful that the definition includes examples!

Izzy's Dad 7:06PM 10/15/10

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