Standard form is used to express and work with very large and very small numbers, without writing out all the zeros can be written as 3.4 x. - ppt download

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How to convert ordinary numbers into standard form numbers A x 10n First work out what the first part of the standard form number, this must be between 1 and …… Next work out the second part, this shows the size and must go x 10n 5.4 x 105 One way of doing this is to see how many places the decimal has to move to match its position in the first part. If the number doesn’t have a decimal then it goes on the end. This has moved 5 times, so x 105. A positive power means a large number.
can be written as 3.4 x can be written as 7.2 x Both of these types of standard form numbers have two parts, the first part has to be between 1 and ….. and the second part, which has to be x 10n, tells you the size of the number. Your calculator may show these types of numbers differently. Type in x to see how it show the answer of
A x 10n. First work out what the first part of the standard form number, this must be between 1 and …… Next work out the second part, this shows the size and must go x 10n. 5.4 x 105. One way of doing this is to see how many places the decimal has to move to match its position in the first part. If the number doesn’t have a decimal then it goes on the end. This has moved 5 times, so x 105. A positive power means a large number.
What would these be: x x x x 108.
What would these be: 23 x x x 101 x x 10-1 x x x
The x 105 tells you this is going to be a large number and the decimal point need to move 5 place (to the right) 5.4 x Fill the gaps with zeros. What would these be: 3.4 x x