Question

What is $ 2.56 $ multiplied by $ 10 $ to the $ 9th $ power?

Answer 1

Hint: First of convert the given word statement in the form of the mathematical expression and then write the resultant value as required. Read the word statement properly and check it twice to know the exact form. There are basically two ways to express any number.
I.Ordinary method
II.Scientific method

Complete step-by-step answer:
Scientific notation can be expressed as the means of expressing very large numbers by powers of ten so that the values are more easily understood. The standard form for the scientific notation can be expressed as $ a \times {10^b} $ where $ \left| a \right| < 10 $ here we will convert the given number in scientific notation by framing the number for “a” by taking every number from the first non-zero number to the last non zero number.
Given word statement: $ 2.56 $ multiplied by $ 10 $ to the $ 9th $ power
Mathematical expression: $ 2.56 \times {10^9} $ = $ 2560000000 $
This is the required solution.
So, the correct answer is “ $ 2560000000 $ ”.

Note: An ordinary number is the expanded version of the standard form of the number. Here we will divide the number with the times of power given. Think of the given power as being the positive.
Write as many zeros, including one before the decimal and then write down the given number.
In case of having positive power to ten, simply write zeros after the number. If number two is given to the power ten, then write two zeros after the number.
Also, remember the difference between the ordinary number and ordinal number. Ordinal number is the number which tells the position of the object or something in the list. For Example first, second, third, etc. It simply tells us the rank or the position of something in the group.
Whereas, the ordinary numbers are the numbers which include whole numbers, rational, irrational numbers and real and imaginary numbers.