Homework Help: math

Posted by leelee on Sunday, April 15, 2007 at 12:02am.

how do u mutiply decimals
and how do u make a decimal into a fraction

do you mean long-hand??

write down the numbers the way you would whole numbers, skipping the decimal

perform the multiplication as if you had no decimals
count up the total number of decimal places in the two multipliers.

count off that many places in your answer going from right to left and mark the decimal place.

eg 3.41 x 52.6

3.41
52.6
---------
**2046
**682
1705
------
179366 -------> total of 3 decimal places needed

so 3.41 x 52.6 = 179.366

for your second question:

write down the number without the decimal place.
Divide by 10 if there is one decimal place, by 100 if you have 2 decimal places, by 1000 if you have 3 decimal places etc.
reduce your fraction to lowest terms

Does the longhand method of multiplication look familiar? Or are you more familiar with a multiplication grid?

No one has answered this question yet.

Answer this Question

Related Questions

wait that was the rong question... this is my ques - What is 3 and 1 over 2 as a...
math againn (converting decimals) - Write 6.4% as a decimal and as a fraction. ...
Math - Can someone help me with this problem? A) Separate the fractions 2/6, 2/5...
Math - Write each percent as a decimal and as a fraction in simplest form. 5/8% ...
fractions and decimals - Use the four numbers in each line to make a fraction ...
5th grade - We are working on Fractions, mixed numbers and decimals. the problem...
Math 115 - Every fraction has a decimal equivalent that either terminates (for ...
Math 115 - Every fraction has a decimal equivalent that either terminates (for ...
Math - how to use grids to mutiply decimals by decimals. please give example
algebra - true or false 1. fraction cant be written as decimal. 2. natural ...

For Further Reading

First Name:
School Subject:
Answer: