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. View our Lesson on Estimating Decimal Products.
This normally refers to multiples of 10.
Compatible numbers are close in value to the actual numbers in a problem but easier to estimate or calculate with eg. Some of the worksheets for this concept are Fractions and estimation Compatible numbers to 20 Lesson name estimate quotients using compatible Math made easy Compatible numbers third grade math pdf Math 5 unit 1 lesson 3 Decimals and estimation Division and multiplication. A friendly number is simply a number that is easy to work with. 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.