This site contains information, graphics and quizzes on basic
concepts of fractions. Fractions and fractional numbers are an
important part of the study of mathematics as we always seek
knowledge of the whole of things by studying its parts.
You are shown four fractions. Three of the fractions are equivalent.
They can all be simplified to to the same fraction. Click on
the fraction that is not equal to the others. If you get the
answer correct, Jackson gets another piece of pie.
In a fraction, the denominator tells us how many parts the whole
is divided into, and the numerator tells us how many of those
parts we're dealing with.
These pages teach operations on decimals covered in K8 math courses.
Each page has an explanation, interactive practice and challenge
games about decimals.
Information, graphics and quizzes on the basic concepts of decimal
numbers. Decimal numbers are important to study as they are the
basis of our money or monetary system and our system of scientific
measure. It is also an area of infinite possibilities from the
smallest to greatest numbers.
The zero and the counting numbers (1,2,3,...) make up the set
of whole numbers. But not every number is a whole number. Our
decimal system lets us write numbers of all types and sizes,
using a clever symbol called the decimal point.
Percent means "out of 100." We can use the percent
symbol (%) as a handy way to write a fraction with a common denominator
of 100. For example, instead of saying "8 out of every 100
professional basketball players are female," we can say
"8% of professional basketball players are female."
For Great Cakes, Get the Ratios Right
Experienced cake bakers would never dream of trying to bake a
cake without first "doing the math" to make sure that
the ingredients are in balance. Having the right proportions
of flour, eggs, sugar, and fat makes all the difference.
Ratio and Proportion
Ask Dr. Math: Ratio
A selection of answers to questions about ratios from the Dr. Math archives.
Ratio and Proportion
A ratio is a comparison of two numbers. We generally separate the two numbers in the ratio with a colon (:).
In this fun and accessible guide, McKellar - dubbed a "math superstar" by The New York Times - gives girls and their parents the tools they need to master the math concepts that confuse middle-schoolers most, including fractions, percentages, pre-algebra, and more.
(Barron's Painless Series)
by Alyece Cummings, Laurie Hamilton
Written especially for middle-school
students, "Painless Fractions" takes a light-hearted
approach to teaching fractions, defining all the terms, then
demonstrating the correct ways to add, subtract, multiply, and
divide them, plus conversion to decimals.