please i really need help on these math examples if i don't get this i will fail my math class?

Question

wats 15km____m
165ml=____L
251g=_____mg
23gm=______kg
0.4L=_______mL
17mm=_____cm
2500mg=_____kg

Answer 1

It's a question of moving the decimal point right or left. This is metric so everything is in multiples of 10. You are either dividing by multiples of 10 or multiplying by multiples of 10 to find these answers. You first need to find out the basic unit break down. I'll give you ONE to get you started. Part of learning and improving this and NOT failing math is learning it for yourself so you can do it again correctly without someone just doing it for you.

KILO means 1000. If there are 1000 meters in 1 kilometer, how many meters are in 15 kilometers? Simple multiplication!

Answer 2

Check out this table:
1. Kilo - means thousand (1000) - that's the "k"
2. Hecto - means hundred (100)
3. Deca - means ten (10)
4. UNIT (1)
5. Deci - means one-tenth (1/10) - that's the "d"
6. Centi - means one-hundredth (1/100) - that's the "c"
7. Milli - means one-thousandth (1/1000) - that's the "m"

Look at letters. The first letter is like a measure from the table (kilo, centi, ...), the second letter is the unit (like grams, meters, litres). So 1 km = one "kilo" "meter" = 1000 meters.

Looking back at the table, you can move the decimal point one place to the left or to the right for every step up or down in the table.

For example,
15km - this is 15 kilo meters.
To get to meters, you have to go down 3 steps in the table from kilo (#1) to UNIT (#4) (just meters).
Three steps down the table means moving the decimal point to the right by three places (or just add three zeros).
So, 15km = 15000m (I just added 3 zeros).
To go from 15km to __ cm, you have to go down 5 steps in the table, so 15km is 1500000cm.

Here's another:
165mL = ___ L
To go from milli to UNIT (just the litre), you have to go three steps UP the table. So you move the decimla point to the left (if you don't see a decimal point, assume that it is to the right of the last number).
So, 165mL = 0.165 L (the decimal point started on the right hand side of the number 5, I moved it 3 steps to the left)

Good luck!

Answer 3

You have to learn the meaning of the metric prefixes.

kilo = 1000
centi = 1/100 = .01
milli = 1/1000 = .001

So a kilogram is 1000 grams. A milligram is .001 grams.

15 km = 15 * 1000 m = 15000 m

165 ml = 165 * .001 l = .165 l

251 g: this one is a little harder. Turn it around:

x mg = x * .001 g = 251 g

x = 251/.001 g = 251,000 g. If you think about it, it should make sense. There are 1000 mg in a gram, so there are 251,000 mg in 251 grams.

Can you get the rest of them from there?

Answer 4

Some people are trying to foul you up. I'm going to set things up for you, but you'll have to finish the job.

15km = 15(1,000)m; k = 1000
165mL=165(1/1000)L; m = 1/1000

251g=_____mg
1g = 1000mg

23gm=______kg
1g = 1/1000 kg

0.4L=_______mL
1L = 1000mL

17mm=_____cm
17(1/1000)m = ???(1/100)m; c=1/100
1mm = 0.1cm

2500mg=_____kg
1mg = 0.001g = 0.000001kg

Don't worry about failing math class. If you don't learn this, you'll fail in real life. Please, work on it.

Answer 5

Do not accept any of the answers so far. They are some correct and some wrong in each of them.

Do a web search for metric system and Learn correctly. Print it out so you can keep it.

the table probably is in your text book as well.

Answer 6

You dumb whore. Get a life and answer your own math problems. You are the stupidest whore I've ever seen. You should just drop out now and go be a janitor at McDonalds you stupid ****.

Answer 7

learn to spell what's
do your own home work
shame on you for cheating!

Answer 8

15km 150,000m
165ml .165L
251g 251,000mg
23g .023kg
.4L 400mL
17mm 1.7cm
2500mg .002500kg

Answer 9

.15 m
1.65 L
25100mg
.0023 ML
.17 cm
.2500 kg..


I THINK.... I DON'T KNOW IF THEY ARE ALL RIGHT OR NOT