Question

Divide. Write the final answer in scientific notation.

0.25 x 1027
0.25 x 1011
2.5 x 1011
2.5 x 1010

Answer 1

Divide the non-exponential parts

2.275/9.1 = 0.25

For the exponential parts, you have 10^19 / 10^8

You can subtract the two exponents and keep the same base 10

Finally, rewrite in scientific notation. 0.25 is less than 1 so you’ll need to rewrite it as 2.5 and decrease the exponent by 1 to make up for the 10x increase