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Express the very small number 0.000000045 in standard form.

Class 8Exponents and PowersExponents and Powers

A $4.5 \times 1 0^{- 8}$
B $4.5 \times 1 0^{- 7}$
C $45 \times 1 0^{- 9}$
D $4.5 \times 1 0^{8}$

Step-by-Step Solution

0.000000045 = 4.5 \times 1 0^{- 8}

; the decimal moves 8 places to give one digit before it.

Answer: A)

4.5 \times 1 0^{- 8}

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