I'm soooo lost! I need MAJOR help!?

Question

Okay, so I really need help with my science homework. Actually It's more like math but it's science. I kno, complicated right?? I think so.

I took notes but I can't understand them! I feel sooooo stupid!

Heres one of the problems: 3km=________m

It seems simple but I'm supposed to something really complicated to get the answer. I'm supposed to set it up like this: 3km(10m/1km)

The 10 should have an exponnt of zero i just don't know how to do that on the computer. I have a chart that shows me the exponents I need to use for the measurments kilo, hecta, deka, deci, centi, and milli. What about liters, grams and meters?!?! How do i punch a problem like this in on my scientific calculator?? Dont i have to use the EE button or something?? PLEASE SOMEONE WHO KNOWS WHAT THEY ARE TALKING ABOUT HELP ME!!!!!!!!!!!!!!!!!!

Answer 1

I have no idea what you're talking about. But I'll give it a shot.

Meters, liters, and grams are all called the base unit.

Kilo, Hecta, Deka, Base, Deci, Centi, Milli.

3km(10m/1km)=10 meters makes a kilometer.

So 3km=300m, moving the decimal over three spaces.

But that's just simple 6th/7th grade math. I don't know what grade you're in or how you're supposed to do it but that's what I thought.

Answer 2

Oh i can do that one!! Its its 300 meters. You move the decimal point to the right two place. And the way to remember it is King Henry Died By Drinking Chocolate Milk. B is the base for liters, meters, and grams. Hope i helped!!

Answer 3

It's quite simple sam...you go to school tomorrow ask your teacher and then he will tell you! lol

SEE I KNOW HOW TO DO THINGS! lol

Aren't you proud?

Answer 4

3km x 1000m divided by 1km=  3000m (and I used a calculator from a website the converts it for you and it is 3,000 and not 300. The others are wrong. In case you didn't know, there's 1000m in a km and if you could do math at all, you'd know that if there were 10m in a km, it'd still only equal 30 not 300)

Here's a different chart w/o the exponents:

(there are more, but these are the most common)

1 liter, meter, or gram= that many of the prefix

For example: 1 gram = 1000 kilograms

kilo(k)=1000

deci(d)=.1

centi(c)=.01

milli(m)=.001

micro(M)=.000001

nano(n)=.000000001

You don't have to use EE, but here's how:

The EE botton should put an E on the screen. And for example, let's say you wanted 1,000, you'd push EE and then push 3 and then equals and it'll give you 1,000. Another example: If you want 150,000 you'd: type 15 x E4 = 150,000.

When converting, you'd:

For example: 3km to m

You'd type 3 x E3

If you're going from 5000 cm to m, you'd:

5000/E2 = 50

Therefore there are 50 meters in 5000 centimeters.

To check, you could do 50 x 10^2 = 5000

If you're doing the second problem by hand, you'd:

5000cm x .01m divided by 1 = 50m

Now if you're multiplying, you'd do it a little differently:

Let's say you did 6 x 10^5 multiplied by 4 x 10^3 = 2.4x10^9

You'd enter: 6E5 x 4E3 = 2,400,000,000 or 2.4x10^9

The others are right about liters, meters, and grams are the base units and you put a prefix in front of it (kilo, milli, etc.)

Hope I helped! And I hope these other people don't live somewhere where they use the metric system. They'd be in trouble.

Whoever gave a thumbs down is dumb b/c I'm in chemistry and we just did this exact problem. And here's a source to say it's the right answer (just enter a 3 where is says km): http://www.convertunits.com/from/km/to/m

Answer 5

ktgurl2 is right!!!

The response may not have been written too kindly, but it was correct.  Not only that, it was thorough.  I'm a 7th/8th grade science teacher, and we're going to be working on these problems for the next two weeks.

Unfortunately, ktgurl2 probably told you exactly what the teacher said in class.  At least, that's how I would have taught it.  I'm concerned that my students are going to have the same problem.  They'll have the notes, but they won't understand.

So the real question is, how do you learn this stuff?  Did ktgurl2 help at all?  I know the other two answers were mostly wrong.  Did they help your understanding or hurt it?

My response: ktgurl2 was right.

My request: let me know if ktgurl2 helped you.