Question

What is the scientific notation for 72.4

Answer 1

7.24 x 10 to the power of 1

Answer 2

7.24 x 10^1

Usually scientific notation is used to represent really big or really small numbers. The exponent to the upper left of the (10) tells us how many places you move the decimal point to the right (when it's positive) or to the left (when it's negative).