Basic mathematics blog

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How to Derive the Equation of an Ellipse Centered at the Origin

Learn how to derive the equation of an ellipse when the center of the ellipse is at the origin.

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Converse of a Conditional Statement -Definition and Examples

What is the converse of a conditional statement ? The converse of a conditional is ...

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Truth Value of a Conditional Statement

Learn how to determine the truth value of a conditional statement

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Definition of Conditional Statement and examples

What is a conditional statement? A conditional statement, also known as if-then statement, is ...

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Angle Bisector Theorem

Learn about the angle bisector theorem and how to use it to solve geometry problems

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Angle Bisector -Definition and Examples

What is an angle bisector ? An angle bisector is an angle that ...

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Place Value Word Problems with Solutions

Hey! Where did you find these interesting place value word problems?

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Multiplying Integers Word Problems

Explore a few examples of word problems when multiplying integers

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Place Value Chart with Examples

A place value chart that will help students learn the value of each digit in a number.

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What is a Deficient Number ? Definition and Examples

In number theory, a deficient number is a number where the sum of its ..

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The Density Property of Real Numbers

What is the density property? The density property is a property of real numbers that says...

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What is a Perpendicular Bisector ? Definition and examples

What does perpendicular bisector mean in geometry ? In geometry, a perpendicular bisector of a segment or triangle is ...

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Ratio Word Problems with Answers

Learn how to solve some interesting ratio word problems.

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What is the Cavalieri's Principle ?

The cavalieri's principle is a theorem states that if two or more figures have the same cross-sectional ...

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Define Locus in Geometry

Here is how to define locus in geometry. A locus is the set of points ...

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Proof that There is no Rational Number Whose Square is 2

There is no rational number whose square is 2. An easy to follow proof by contraction.

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What is Orthographic Drawing

Lesson about orthographic drawing and examples. An orthographic drawing is

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Printable Algebra Worksheets with Answers

A wide variety of algebra worksheets that teachers can print and give to students as classwork or homework.

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Military Time Converter ( The 24 Hour Clock! )

This is the best military time converter online. Convert from standard time to military time and from military time to standard time.

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How to Find the Radius of a Circle when Circumference is Given

Learn how to find the radius of a circle when the circumference of the circle is known or given

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Free Printable Geometry Worksheets

A wide variety of geometry worksheets that teachers can give to students as classwork or homework.

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How much money Ana has all together?

Ana found a 15 dollar bill on the floor on Saturday. Then on Sunday her parents gave her 155 dollars. How much does Ana have all together? CLUE: Saturday~15

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A test word problem

A multiple-choice test contains 25 questions. Correct answers are worth 4 points each; 2 points are deducted for each wrong answer; and unanswered questions

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Solve a simple system with five equations

The sum of four numbers a, b, c, and d is 68. If we increase a by 7, we get x. If we increased b by 8, we get x. If we decrease c by 15, we get 2x.If we

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Pizza and Fraction

3 friends share 4/5 of a pizza. what fraction of pizza does each person get? The amount to share is 4/5 Since the amount will be shared between 3 friends,

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A Tricky Percentage Math Problem

If someone wants to make $10.00 when selling an item and I get 40%. How much do I need to add to $10.00? It's not coming out when I add 40% to 10.00.

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Advanced Algebra for High School Math and College Math

Learn advanced algebra online. Topics include exponential and logarithmic functions, algebra proofs, tough algebra word problems

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A subtraction word problem with apples

Karla brings 15 apples to school. She gives away 9 apples. How many apples does Karla have left? Karla will have 15 - 9 apples = 6 apples Karla has

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Children and the Apples Word Problem

Once upon a time, there was a family of children. The oldest of these children was in charge of making sure that each of the other children did what

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Solve a system of linear equations to find the cost of a cd

Andrew had $93.00. With this money, he could buy 3 CDs and 4 books. However, he bought only 2 CDs and 3 books and had $27.00 left. What was the cost

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How to Find the Cost to Rent Bikes

The cost to rent a bike for 1 person under age five is 3£ and 5.50£ for anybody over age five. Calculate the cost to rent 7 bikes if 4 people are under

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Solving a Hot Dog Word Problem with a Linear Equation

Shawn was training for a hot dog contest. He trained for 6 days and each day he ate 4 more hot dogs. At the end of 6 days he had ate 150 hot dogs. How

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Solving a system of linear equations when the lines are parallel

Find the value of k so that the two given lines will be parallel. 3X-KY=7 2X+5Y=-1 First, put the two equations in standard form 3X - KY = 7 3X - 7

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Solving an Age Problem with a System of Linear Equations

The sum of Mira and Shaheena is 40 years. After 10 years Mia will be twice as old as Shaheena. What is Mia's age. What is Shaheena's age? Solution

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Hourly to Salary Calculator - Convert Hourly Wage to a Salary

Hourly to salary calculator- Convert your income to a yearly salary or a monthly salary

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Overtime Calculator - How much for Time and a Half or Double rate ?

This overtime calculator will help you figure out how much money earned for working overtime

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Convert Square Feet to Acres Calculator

Convert square feet to acres and acres to square feet with this conversion calculator

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Convert Kilograms to Tons calculator

Convert kilograms to tons and tons to kilograms with this conversion calculator

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How to Convert Square Feet to Acres

Here is how to convert square feet to acres - To convert square feet to ...

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Modeling Multiplication

Modeling multiplication with number counters - Learning multiplication is fun!

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Properties of Congruence

Learn the three properties of congruence. Examples to illustrate which property.

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Compound Interest Word Problems and Solutions

Practice with these well chosen compound interest word problems

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Compound Interest Formula- Explained

What is the compound interest formula? Which one is the principal?

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How to Write an Inequality

Learn how to write an inequality quickly with this easy to follow math lesson.

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Optical Illusions with Geometry

Take a good look at these optical illusions with geometry

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Recent Articles

  1. How to Derive the Equation of an Ellipse Centered at the Origin

    Mar 13, 19 11:50 AM

    Learn how to derive the equation of an ellipse when the center of the ellipse is at the origin.

    Read More

New math lessons

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Math quizzes

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Scientific Notation Quiz

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Tough algebra word problems

Tough Algebra Word Problems.

If you can solve these problems with no help, you must be a genius!

Recent Articles

  1. How to Derive the Equation of an Ellipse Centered at the Origin

    Mar 13, 19 11:50 AM

    Learn how to derive the equation of an ellipse when the center of the ellipse is at the origin.

    Read More

K-12 math tests


Everything you need to prepare for an important exam!

K-12 tests, GED math test, basic math tests, geometry tests, algebra tests. 

Real Life Math Skills

Learn about investing money, budgeting your money, paying taxes, mortgage loans, and even the math involved in playing baseball.