What are the seven fundamental quantities and their corresponding units of measurement?

Write the following number in ordinary decimal form :
$3.49 \times {10}^{-11}$

Write each of the following numbers in ordinary decimal form :
$5.00858585$

Express the following in the scientific notation:

$234,000$

Write the following in exponential notation :
$0.000098$

Write the following number in ordinary decimal form :
$0.00477 \times {10}^5$

Write the following number in ordinary decimal form :
$3.75 \times {10}^{-1}$

Write the following in exponential notation :
$198.75$

Express the following in the scientific notation:

$500.0$

Write the following in exponential notation : $0.00461$ 

Write the following in exponential notation :
$3,672,199$

Express the following in the scientific notation:

$8008$

Write the following number in ordinary decimal form :
$0.011 \times {10}^{-3}$

Express the given information in Scientific notation (standard form) and then arrange them in ascending order of their size.

$\begin{array}{|clc|}\hline \text{ S1.No. }& \text{ Deserts of the World }& \text{ Area (Sq. Kilometres) }\\ 1.& \text{ Kalahar1, South Africa }& 932,400\\ 2.& \text{ Thar, India }& 199,430\\ 3.& \text{ Gibson, Australia }& 155,400\\ 4.& \text{ Great Victorla, Australia }& 647,500\\ 5.& \text{ Sahara, North Africa }& 8,598,800\\ \hline\end{array}$

Represent the union of two sets by Venn diagram for each of the following.

$X=\{x | x$ is a prime number between $80$ and $100\}$

$Y=\{y | y$ is an odd number between $90$ and $100\}$

Express the following in the scientific notation:

$6.0012$

Write the following number in ordinary decimal form :
$14.3 \times {10}^{-2}$