Q: What is a good estimation for 0.41 as a decimal?

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It depends upon for what you need the estimation. However, 0.3 is exactly 3/10 which is a much more useful estimate (if it could be called one) as dividing a non-repeating decimal number by 10 guarantees an exact answer in decimals whereas dividing by 3 (or multiplying by 1/3 which is the same) can lead to repeating decimals which can only be approximated as a terminating decimal.

19.0274

If an estimation, or estimate, is a guess, an approximate estimation is a rougher guess.

A reasonable estimate will give an indication of the order of magnitude of the number. The order of magnitude is determined by the decimal point and so knowing the order can help in placing it.

It increases the accuracy of the estimation and reduces the associated error range.

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It could be 0.2 to one decimal place.

The smallest number (decimal) is .041

front end estimation means to use only the whole number part of the decimal. we only use whole numbers to do front end estimation

When using front-end estimation, we add or subtract the front digits, and then adjust for a more accurate estimation by estimating the sum of the digits to the right of the decimal point.

0.8 to one decimal place or 1 as a whole number.

4 as a whole number or 4.2 to one decimal place.

You could try estimation to get an idea of the magnitude of the answer.

To work out the nearest number or decimal to the exact number by using an educated guess.

It is not possible to tell because the "number" is the question appears to have two decimal points!

It depends upon for what you need the estimation. However, 0.3 is exactly 3/10 which is a much more useful estimate (if it could be called one) as dividing a non-repeating decimal number by 10 guarantees an exact answer in decimals whereas dividing by 3 (or multiplying by 1/3 which is the same) can lead to repeating decimals which can only be approximated as a terminating decimal.

44/22 = 2 so the decimal point should be placed after the first digit (which is a 1).

20 is a good estimate, 22 is better.