Exponents and Scientific Notation

zee-f · 2011-07-06 10:06:41

so 16 has no mistake ???????

Bob · 2011-07-06 10:14:25

You think the conversion is correct?

To change from micro-meters to meters you must divide by 1000 000

To change into cm, you must x by 100

What does that give you?

Bob

zee-f · 2011-07-06 10:40:30

it gives me 1.3478

Bob · 2011-07-06 10:41:58

Good. So what letter will you pick?

Bob

zee-f · 2011-07-06 10:44:11

i would chose A

zee-f · 2011-07-06 10:47:32

yayyy 4 more left amm for 17

98kg= 216.053 lb

Bob · 2011-07-06 10:54:30

A is correct for 16.

That conversion kg to lb is correct but ...

17? The one I'm looking at has kL and liters

Bob

Last edited by Bob (2011-07-06 10:57:36)

zee-f · 2011-07-06 10:59:44

so this has no mistakes

Bob · 2011-07-06 11:02:46

If we are talking about converting 98 kiloLiters into Liters then it has a mistake.

Which is bigger? one kL or one Liter?

Bob

zee-f · 2011-07-06 11:04:23

kiloliter is bigger then a liter

zee-f · 2011-07-06 11:06:29

its 98000

zee-f · 2011-07-06 11:08:58

so d is my answer ?

Bob · 2011-07-06 11:11:13

That's correct. Well done. You got there.

I'm going to log off now. It's past midnight here in the Uk.

Back in the morning.

Bob

zee-f · 2011-07-06 11:13:02

ok thanx alot am logging of 2

zee-f · 2011-07-07 04:30:46

for #18 -f
for 19-f
for 20-a

18. Estimate the length of a pen in centimeters.

A about 1 cm
B about 2 cm
C about 5 cm
D about 13 cm
E about 23 cm
F about 30 cm
19. Estimate the amount of juice in a typical orange juice carton in liters.
A about 8 liters
B about 5 liters
C about 4 liters
D about 3.5 liters
E about 2 liters
F about .5 liters

20. Estimate the weight of a small can of soup in grams.
A about 30 grams
B about 500 grams
C about 250 grams
D about 325 grams
E about 750 grams
F about 100 grams

Bob · 2011-07-07 04:38:16

hi zee-f,

How are you today?

Ready for some more math?

edit: Just checking your answers.

Bob

Last edited by Bob (2011-07-07 04:38:52)

Bob · 2011-07-07 04:41:50

Answers:

I'm guessing you are more used to feet, inches, gallons etc.

18 f = 30 cm That's about a foot! What sort of pen are you using?

19 f Yes that look good to me.

20 a 30 grams is just over one ounce. That's too low.

Bob

Last edited by Bob (2011-07-07 04:42:35)

zee-f · 2011-07-07 04:48:30

hhhhhh ok so for 18 ill go with b and for 20 F

zee-f · 2011-07-07 04:53:12

i dont see the point of estimating these

Bob · 2011-07-07 04:54:18

18 b. Now you have gone to the other extreme.

2 cm is less than an inch. You couldn't hold a pen that small.

20 f. I think I'd accept that as it says a small can.

While you were answering I did a search online for soup. It was harder than I thought. One site wanted to sell me a picture of Andy Walhol's "Can of Soup" picture! Eventually found a medium size can of Heinz tomato at 400g. So 100g may still be a bit small.

Why do the estimating? Just so you get a 'feel' for how big a measurement is. Do you usually use pounds and ounces, feet and inches, pints and gallons? I can give you some conversion factors.

Bob

Last edited by Bob (2011-07-07 04:56:30)

zee-f · 2011-07-07 04:56:00

so would 500g be ok

zee-f · 2011-07-07 04:57:01

for 18 d is good ?

Bob · 2011-07-07 05:01:18

500g

I suppose so. If I'd been making up the choices I'd have put them further apart so one answer was obviously the one. 100g, 250g, 350g, 500g, and even 750g seem possible to me, depending on the size of can.

18d I like.

I've just measured my pen and that's what it is!

Why do the estimating? Just so you get a 'feel' for how big a measurement is. Do you usually use pounds and ounces, feet and inches, pints and gallons? I can give you some conversion factors.

Bob

zee-f · 2011-07-07 05:03:28

yup ill be happy to do conversion factors

zee-f · 2011-07-07 05:08:34

so i submitted my work i got 5 incorrect
1-c incorrect
14-e
17-d
19-f
20-f

i need help getting the correct answer and explain the new answer plzzz

Math Is Fun Forum

#76 2011-07-06 10:06:41

Re: Exponents and Scientific Notation

#77 2011-07-06 10:14:25

Re: Exponents and Scientific Notation

#78 2011-07-06 10:40:30

Re: Exponents and Scientific Notation

#79 2011-07-06 10:41:58

Re: Exponents and Scientific Notation

#80 2011-07-06 10:44:11

Re: Exponents and Scientific Notation

#81 2011-07-06 10:47:32

Re: Exponents and Scientific Notation

#82 2011-07-06 10:54:30

Re: Exponents and Scientific Notation

#83 2011-07-06 10:59:44

Re: Exponents and Scientific Notation

#84 2011-07-06 11:02:46

Re: Exponents and Scientific Notation

#85 2011-07-06 11:04:23

Re: Exponents and Scientific Notation

#86 2011-07-06 11:06:29

Re: Exponents and Scientific Notation

#87 2011-07-06 11:08:58

Re: Exponents and Scientific Notation

#88 2011-07-06 11:11:13

Re: Exponents and Scientific Notation

#89 2011-07-06 11:13:02

Re: Exponents and Scientific Notation

#90 2011-07-07 04:30:46

Re: Exponents and Scientific Notation

#91 2011-07-07 04:38:16

Re: Exponents and Scientific Notation

#92 2011-07-07 04:41:50

Re: Exponents and Scientific Notation

#93 2011-07-07 04:48:30

Re: Exponents and Scientific Notation

#94 2011-07-07 04:53:12

Re: Exponents and Scientific Notation

#95 2011-07-07 04:54:18

Re: Exponents and Scientific Notation

#96 2011-07-07 04:56:00

Re: Exponents and Scientific Notation

#97 2011-07-07 04:57:01

Re: Exponents and Scientific Notation

#98 2011-07-07 05:01:18

Re: Exponents and Scientific Notation

#99 2011-07-07 05:03:28

Re: Exponents and Scientific Notation

#100 2011-07-07 05:08:34

Re: Exponents and Scientific Notation

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