Question

put each number in scientific notation.
(3) 450,000,000 =
(4) 0.00098 =
(5) 1,200,000,000 =
(6) 0.00000004 =

Explanation:

Step1: Recall scientific - notation form

Scientific notation is $a\times10^{n}$, where $1\leqslant|a|\lt10$ and $n$ is an integer.

Step2: Convert 1,200,000,000

Move the decimal point 9 places to the left. So, $1200000000 = 1.2\times10^{9}$.

Step3: Convert 450,000,000

Move the decimal point 8 places to the left. So, $450000000=4.5\times 10^{8}$.

Step4: Convert 0.00098

Move the decimal point 4 places to the right. So, $0.00098 = 9.8\times10^{-4}$.

Step5: Convert 0.00000004

Move the decimal point 8 places to the right. So, $0.00000004=4\times10^{-8}$.

Answer:

(3) $450,000,000 = 4.5\times 10^{8}$; (5) $1,200,000,000 = 1.2\times10^{9}$; (4) $0.00098 = 9.8\times10^{-4}$; (6) $0.00000004 = 4\times10^{-8}$