Basic mathematics blog

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Recent Articles

  1. Proof that There is no Rational Number Whose Square is 2

    Feb 17, 19 12:04 PM

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

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  2. What is Orthographic Drawing

    Feb 16, 19 05:08 PM

    Lesson about orthographic drawing and examples. An orthographic drawing is

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  3. What is the Cavalieri's Principle ?

    Feb 15, 19 12:12 PM

    The cavalieri's principle is a

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  4. Printable Algebra Worksheets with Answers

    Feb 12, 19 07:55 AM

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

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  5. Military Time Converter ( The 24 Hour Clock! )

    Feb 08, 19 02:35 PM

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

    Feb 05, 19 11:28 AM

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

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  7. Free Printable Geometry Worksheets

    Feb 04, 19 03:16 PM

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

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  8. How much money Ana has all together?

    Feb 04, 19 12:01 PM

    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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  9. A test word problem

    Feb 03, 19 05:16 PM

    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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  10. Solve a simple system with five equations

    Feb 03, 19 05:12 PM

    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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  11. Pizza and Fraction

    Feb 03, 19 05:06 PM

    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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  12. A Tricky Percentage Math Problem

    Feb 03, 19 04:56 PM

    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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  13. Advanced Algebra for High School Math and College Math

    Feb 03, 19 11:45 AM

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

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  14. A subtraction word problem with apples

    Feb 01, 19 04:03 PM

    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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  15. Children and the Apples Word Problem

    Feb 01, 19 03:50 PM

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

    Jan 31, 19 05:05 PM

    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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  17. How to Find the Cost to Rent Bikes

    Jan 31, 19 04:59 PM

    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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  18. Solving a Hot Dog Word Problem with a Linear Equation

    Jan 31, 19 04:37 PM

    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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  19. Solving a system of linear equations when the lines are parallel

    Jan 31, 19 04:30 PM

    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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  20. Solving an Age Problem with a System of Linear Equations

    Jan 31, 19 03:51 PM

    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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  21. Hourly to Salary Calculator - Convert Hourly Wage to a Salary

    Jan 22, 19 08:11 PM

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

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

    Jan 18, 19 10:53 AM

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

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  23. Convert Square Feet to Acres Calculator

    Jan 14, 19 09:22 AM

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

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  24. Convert Kilograms to Tons calculator

    Jan 13, 19 03:47 PM

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

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  25. How to Convert Square Feet to Acres

    Dec 14, 18 04:05 PM

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

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  26. Modeling Multiplication

    Nov 15, 18 05:01 PM

    Modeling multiplication with number counters - Learning multiplication is fun!

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  27. Properties of Congruence

    Nov 09, 18 09:40 AM

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

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  28. Compound Interest Word Problems and Solutions

    Nov 07, 18 02:38 PM

    Practice with these well chosen compound interest word problems

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  29. Compound Interest Formula- Explained

    Nov 06, 18 02:37 PM

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

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  30. How to Write an Inequality

    Oct 29, 18 02:26 PM

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

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  31. Optical Illusions with Geometry

    Oct 22, 18 04:14 PM

    Take a good look at these optical illusions with geometry

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  32. Why the Rule of 72 Works

    Oct 15, 18 11:05 AM

    why the rule of 72 works- math explanation of where the 72 came from.

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  33. Rule of 72 definition

    Oct 10, 18 08:36 AM

    What is the rule of 72 ? Find out how you can use it to solve compound interest problems fast

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  34. Multiplication of Binomials Geometrically - Area models

    Oct 08, 18 08:47 AM

    The objective of this lesson is to examine the multiplication of binomials geometrically

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  35. Heart of Algebra : Key questions for the SAT math

    Sep 01, 18 04:07 PM

    These heart of algebra questions will help you prepare to take the math portion of the SAT

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  36. How to Solve Logarithmic Equations

    Jul 06, 18 12:29 PM

    Learn how to solve two types of logarithmic equations

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  37. Area Between Four Touching Circles

    Jun 27, 18 09:24 AM

    What is the area between four touching circles? How do I find it?

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  38. How to Solve Exponential Equations

    Jun 20, 18 04:10 PM

    Learn how to solve exponential equations quickly with this lesson that is easy to understand

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  39. Expanding Logarithms

    Jun 14, 18 09:55 AM

    Expanding logarithms made easy with this easy to follow lesson

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  40. How to Simplify Logarithms

    Jun 11, 18 02:27 PM

    Learn how to simplify logarithms with this easy to follow lesson

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  41. Properties of Logarithms

    Jun 08, 18 12:03 PM

    We help you see properties of logarithms clearly and fast using a table

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  42. How to Evaluate Logarithms

    Jun 04, 18 01:15 PM

    Learn quickly how to evaluate logarithms with this easy to follow math lesson

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  43. Exponential and Logarithmic Functions

    May 21, 18 09:24 AM

    Explore exponential and logarithmic functions with these easy to follow math lessons

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  44. What is the Logarithm of a Negative Number?

    May 16, 18 09:09 AM

    What is the logarithm of a negative number or zero? Find a crystal clear explanation here!

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  45. What is a Logarithm?

    May 14, 18 04:36 PM

    what is a logarithm? See the definition of logarithm

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Recent Articles

  1. Proof that There is no Rational Number Whose Square is 2

    Feb 17, 19 12:04 PM

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

    Read More

New math lessons

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Math quizzes


Scientific Notation Quiz

Graphing Slope Quiz

Adding and Subtracting Matrices Quiz  

Factoring Trinomials Quiz 

Solving Absolute Value Equations Quiz  

Order of Operations Quiz

Types of angles quiz

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. Proof that There is no Rational Number Whose Square is 2

    Feb 17, 19 12:04 PM

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

    Read More

K-12 math tests

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