Question

please solve this questions​

Answer 1

What is Scientific notation:

Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, $23,00,00,000$ can be written in scientific notation as $2.3 \times 10^8$.

How to Convert a Number to Scientific Notation:

The proper format for scientific notation is $a\times10^b$ where $a$ is a number or decimal number such that the absolute value of $a$ is greater than or equal to one and less than ten or, $1 \leq |a| < 10$. $b$ is the power of 10 required so that the scientific notation is mathematically equivalent to the original number.

1. Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. The resulting decimal number is a.
2. Count how many places you moved the decimal point. This number is b.
3. If you moved the decimal to the left b is positive.
4. If you moved the decimal to the right b is negative.
5. If you did not need to move the decimal b = 0.
6. Write your scientific notation number as $a\times10^b$.
7. Remove trailing 0's only if they were originally to the left of the decimal point.

Now Let's Solve the question:

Question 13.

A) 1121.36 = $1.12136 \times 10^3$

B) $\bold{120.36 \times 10^{-8}}$ = $= 1.2036 \times 10^{-6}$

C) 0.00821 = $= 8.21 \times 10^{-3}$

D) $\bold{0.00236 \times 10^{8}}$ = $= 2.36 \times 10^5$