A rational number is any number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Before we add or subtract, the rational numbers should have the same bottom number (called a Common Denominator). The educational videos and apps will give you unit rate examples and help you learn about rational numbers.
The apps, sample questions, videos and worksheets listed below will help you learn Add and subtract rational numbers
Sample Questions on Add & subtract Rational Numbers
Add & subtract Rational Numbers Worksheets
Educational Apps related to Rational numbers
Educational Videos related to Rational numbers
Related Topics
To divide rational numbers, you turn the division problem into a multiplication problem by flipping the second rational number. Then you go ahead and multiply the tops and bottoms together to get your answer. If you can simplify your problem before multiplication, you can go ahead and do so to make your problem easier.
If your calculator does not have a percent key and you want to add a percentage to a number multiply that number by 1 plus the percentage fraction. For example 25000+9% = 25000 x 1.09 = 27250. To subtract 9 percent multiply the number by 1 minus the percentage fraction. Example: 25000 – 9% = 25000 x 0.91 = 22750.
A rational number is a number that can be written as a ratio. That means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. The number 8 is a rational number because it can be written as the fraction 8/1.
All numbers that are not rational are considered irrational. An irrational number can be written as a decimal, but not as a fraction. An irrational number has endless non-repeating digits to the right of the decimal point. Here are some irrational numbers: π = 3.141592…
