Question

What is 0.045 in scientific notation

Answer 1

4.5 x 10 exponent -2

Answer 2

The decimal moves 2 spaces to the left to be placed before 4, which is the first non zero number. Thus is 4.5x10 2nd power negative since the decimal moved left. The decimal point moves 5 places left to be placed after 2, which is the first non zero number