To convert numbers into scientific notation, we follow a specific format: a number between 1 and 10 multiplied by a power of ten. Let’s break down each of the given values:
- a) 29,500
We express 29,500 as 2.95 × 104. We move the decimal point four places to the left to get a number between 1 and 10 and count how many places we moved it, which indicates the exponent of ten. - b) 0.000082
For this value, we write it as 8.2 × 10−5. We moved the decimal point five places to the right, resulting in a negative exponent. - c) 650,000,000
This number is converted to 6.5 × 108. We shift the decimal point eight places to the left to obtain the number between 1 and 10. - d) 0.0100
Finally, 0.0100 is expressed as 1.00 × 10−2. We move the decimal point two places to the right to get a valid scientific notation.
In summary, the scientific notations are:
- a) 29,500 = 2.95 × 104
- b) 0.000082 = 8.2 × 10−5
- c) 650,000,000 = 6.5 × 108
- d) 0.0100 = 1.00 × 10−2