Answers

Scientific notation is a way to deal with writing out very large or very small numbers.

10 October 2011

Do you have any examples you are struggling with?

10 October 2011

a new movie costs £320 million to make write this amount in scientific notation

10 October 2011

okay, how would you write it normally - without the word million?

10 October 2011

320 000 000

10 October 2011

So what do you think the scientific notation would look like?

10 October 2011

7

10 October 2011

Spot on, so how many 0's are there?

10 October 2011

thats what i need help with i don't understand how to write it out

10 October 2011

okay so we could write:

10 October 2011

What does equal?

10 October 2011

10000000 i think

10 October 2011

Yes!

10 October 2011

So

10 October 2011

Does that make sense?

10 October 2011

to see if i understand

10 October 2011

can you maybe ask me a question

10 October 2011

We're not quite there yet, but I will in a second

10 October 2011

Scientists often prefer to use normalised scientific notation. So if the first number is greater than 1, but less than 10 - we add a decimal point, and add one to the exponent. So we get

10 October 2011

okay

10 October 2011

Okay, let's give it a go. What is the scientific notation for ?

10 October 2011

9.75 to the power of 6

10 October 2011

Almost! We must not say "to the power of 6" because that would look like this , what we want (and what I think you mean) is

10 October 2011

okay i think i understand

10 October 2011

and we would say "9.75 times 10 to the power 6"

10 October 2011

You might see it on the calculator shortened to this as well.

10 October 2011

Why do you think scientific notation is useful?

10 October 2011

okay then

10 October 2011

because you don't need to write a large number with lots of zero's?

10 October 2011

Yes, often scientists deal with huge numbers, like the distance from the earth to the sun. It is a lot easier to write it out in scientific notation in these cases. They also often round the number to only a few significant figures to keep things really short.

10 October 2011

thankyou for helping me understand

10 October 2011

No problem Maina

10 October 2011

smiley face

10 October 2011

Add an answer Cancel reply