In mathematics, compatible numbers are the numbers that are easy to add, subtract, multiply, or divide mentally. Compatible numbers are close in value to the actual numbers that make estimating the answer and computing problems easier. We can round the numbers to the nearest ten, hundred, thousand or ten thousand to make them compatible numbers.


 · Definition of a Compatible Number When we think of the word, 'compatible,' we often think of two people that go quite well together, like the historical Shakespearian couple, Romeo and Juliet, or...

Compatible numbers are numbers that look nice or friendly with each other when we do mental calculation to estimate a product, an addition, a subtraction, but especially a division. Using the figure above, we can make the following conclusions about compatible numbers:

compatible numbers • are close in value to the actual numbers in a problem but easier to estimate or calculate with, e.g. using 20 and 5 rather than 20.25 and 5.1 to estimate 20.25 ÷ 5.1. EXAMPLES:


 · Compatible numbers are only used in mental computation. Working with decimals can make it difficult to multiply and divide, so compatible numbers help to simplify these tasks. For example, with the equation 5.8 multiplied by 3.2, the compatible numbers would be 6 and 3. The sum of these compatible numbers is 18, while the actual answer is 18.56 ...

Compatible number can be defined as, "The numbers which are close to the actual numbers, and can be easily added, subtracted or divided orally are known as compatible numbers." These numbers are used for carrying out some basic mathematical functions.

"Compatible numbers" don't exist in math. 3780 / 9 is 420. What is the definition of a compatible number? this means two numbers that are the same and that can compare

Compatible numbers activity. For this activity you will need a whiteboard. On the whiteboard write a list of compatible numbers in random order within a frame. Below is an example of compatible numbers you could use that total 10 (for younger students) as well as some that total 100.

Compatible numbers are numbers that are easy to perform arithmetic operations such as addition, subtraction, multiplication, or division in your head. These numbers are helpful for performing easy mental calculations and help in solving any math problem easier in our head by rounding each number to the nearest ten, twenty, fifty or hundred.