Basic Math and Pre-Algebra For Dummies by Zegarelli Mark

Author:Zegarelli, Mark
Language: eng
Format: epub
ISBN: 9781118791981
Publisher: Wiley
Published: 2014-01-10T18:14:58+00:00

Even though the last digit in the answer is a 0, you still need to count this as a digit when placing the decimal point. When the decimal point is in place, you can drop trailing zeros (flip to “Understanding Basic Decimal Stuff,” earlier in this chapter, to see why the zeros at the end of a decimal don't change the value of the number).

So the answer is 3.760, which is equal to 3.76.

Dividing decimals

Long division has never been a crowd pleaser. Dividing decimals is almost the same as dividing whole numbers, which is why a lot of people don't particularly like dividing decimals, either.

But at least you can take comfort in the fact that, when you know how to do long division (which I cover in Chapter 3), figuring out how to divide decimals is easy. The main difference comes at the beginning, before you start dividing.

Here's how to divide decimals:

Turn the divisor (the number you're dividing by) into a whole number by moving the decimal point all the way to the right; at the same time, move the decimal point in the dividend (the number you're dividing) the same number of places to the right. For example, suppose you want to divide 10.274 by 0.11. Write the problem as usual:

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