Question

A number is written in scientific notation.

2.089×105
Which is the same number written in standard notation?

A. 20,890
B. 28,900
C.208,900
D.289,000

Answer 1

If it’s 2.089 x 10^5 then the answer’s (c): 208,900

Answer 2

C. 208,900

Explanation:

Scientific notation with a positive exponent:

Start with the decimal number and move the decimal point to the right the same number of places as the exponent. The exponent of 10 is 5.

Start with 2.089

Now add some zeros to the right of the 9.

2.0890000

Now move the decimal point 5 places to the right.

208900.00

The number is 208,900