Compatible Numbers Definition Math

Compatible numbers are numbers that when added produce a tidy sum one that usually ends in zero or multiples of 10. Numbers in the multiplication table assuming that we know the table by heart. This video is intended for 3rd 5th graders.

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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.

Compatible numbers definition math. Are close in value to the actual numbers in a problem. They are visually easier to compute mentally than other numbers for various reasons. Compatible numbers are either rounded up or down to give a whole number. Compatible numbers are close in value to the actual numbers that make estimating the answer and computing problems easier.

To estimate 20 25 5 1. 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. 38 and 62 are also compatible numbers because when added they total 100 end in zero. When estimating compatible numbers are numbers that are close in value to the actual numbers and which make it easy to do mental arithmetic.

But easier to estimate or calculate with e g. We can round the numbers to the nearest ten hundred thousand or ten thousand to make them compatible numbers. Numbers that end with 1 or more zeros are compatible. And 9 and 1 are considered compatible because when added they total 10 end in zero.

Jenny eather 2014. The answer from compatible numbers should be close in value to the correct figure. Some examples of compatible numbers when doing division are 400 and 10 36 and 6 2400 and 12 and 64 and 8. Using 20 and 5 rather than 20 25 and 5 1.

Simply speaking compatible numbers are numbers that are easy to add subtract multiply or divide in your head. This tutorial discusses how to use compatible numbers friendly numbers to add subtract multiply and divide. Also 70 and 30. In mathematics compatible numbers are the numbers that are easy to add subtract multiply or divide mentally.

For example 7 and 3. Compatible numbers are numbers that are easy to perform arithmetic operations such as addition subtraction multiplication or division in your head. According to math goodies compatible numbers in math are whole numbers close in value to the real numbers but allow easier computation.