March 5, 2015

Homework Help: math

Posted by morgan2 on Tuesday, September 12, 2006 at 7:02pm.

I am trying to convert km to meters, centimeters and milimeters. Some of the orignals are like 1.5 km= ?m or cm or mm. I am really having a hard time getting the decimal points in the right place or when to leave them out altogether. I'm only in 5th grade. HELP!

Here is an easy way to do it. Here are the first six prefixes.
unit as length, volume, second, etc.

Here is what you do. Start somewhere on the scale above. Move the decimal point to the left if we go UP the scale and to the right if we go DOWN the scale. For example,
4.5 meter = ?? kilometers.
We start at the unit position. We move 1 to deca, 1 to hecto and 1 to kilo for 3 total. So move the decimal point three places to the left and 4.5 m = 0.0045 km.
Or 0.0045 km = ?? millimeters.

Start at km, we move 1 to hecto, 1 to deca, 1 to unit, 1 to deci, 1 to centi and 1 to milli or 6 places total. So move the decimal 6 places to the right.
0.0045 km = 4500 mm. I hope this helps. There are other prefixes but those can come later.

Thank you!!!! That little light went on in an instant! My Mom thanks you too, even she understands it now!

Answer this Question

First Name:
School Subject:

Related Questions

math - can some one explain to me how to convert 3 meters to centimeters. and 3 ...
Math - they wanted me to choose an equivalent measure for 150 centimeters and ...
Math - Convert 2yd, 2ft, 5in. to centimeters. Convert 10yd,1ft, 7in. to meters. ...
Math - A rectangular prism has a length of 100 cm, a height of 10 cm and a ...
math - convert 2 meters to centimeters 2______=_____cm
science again again - so if i were saying i was something somethings tall........
math - What is the relationship between centimeters and meters?How do you ...
Math - 2 m 300 mm = ___centimeters I am confused on the meters part. I can't ...
Math - Please help to convert the following(Show work please!!! 1.62500 Grams to...
Pre-Algebra - Frank had 25 meters of string. He cut off 480 centimeters that ...