Question

Write the following numbers in standard notation:
a. 7.9 x 105
b. 5 x 10-8

Answer 1

Numbers in standard notation are 7.9 x 10^5 as 790,000 and 5 x 10^-8 as 0.00000005.

Step-by-step explanation:

To write the numbers in standard notation, we move the decimal point to the right if the exponent is positive, and to the left if the exponent is negative. The number of places we move the decimal point corresponds to the value of the exponent.

1. For 7.9 x 105, move the decimal point 5 places to the right: 790,000.

2. For 5 x 10-8, move the decimal point 8 places to the left: 0.00000005.