Answer
Verified
396.9k+ views
Hint:Scientific notation is a way of writing down very large or very small numbers easily.
\[{10^3} = 1000\], so \[4 \times {10^3} = 4000\] . So \[4000\] can be written as \[4 \times {10^3}\] . This idea can be used to write even larger numbers down easily in scientific notation.
The rules when writing a number in scientific notation is that first you write down a number between \[1\] and \[10\], then you multiply it by \[10\] to the power of a number.
Scientific notation =\[m \times {10^n}\] where, \[1 \leqslant m < 10\].
Complete step-by-step answer:
The given number is \[1000000 + 200000 + 70000\].We need to write the number in scientific notation.
We know that, if we need to write one number in scientific notation then we first need to write a number between \[1\] and \[10\] then multiply it by \[10\] to the power of a number.
Thus, \[1000000 + 200000 + 70000 = 1270000\]
So, for expressing \[1270000\] in the scientific notation we first need to write a number between 1 and \[10\] then multiply it by \[10\] to the power of a number.
That is, we can express \[1270000\] as \[1.27\] multiplied by \[10\] to the power 6.
i.e.\[1270000 = 1.27 \times {10^6}\]
Therefore we get,
Scientific notation of \[1000000 + 200000 + 70000\] is \[1.27 \times {10^6}\].
So, the correct answer is “Option B”.
Note:Scientific notation is a way of expressing real numbers that are too large or too small to be conveniently written in decimal form. It may be referred to as scientific form or standard index form, or standard form in the UK.
Small numbers can also be written in scientific notation. However, instead of the index being positive (in the above example, the index was \[3\]), it will be negative. The rules when writing a number in scientific notation is that first you write down a number between 1 and \[10\], then you multiply it by \[10\] to the power of a number.
\[{10^3} = 1000\], so \[4 \times {10^3} = 4000\] . So \[4000\] can be written as \[4 \times {10^3}\] . This idea can be used to write even larger numbers down easily in scientific notation.
The rules when writing a number in scientific notation is that first you write down a number between \[1\] and \[10\], then you multiply it by \[10\] to the power of a number.
Scientific notation =\[m \times {10^n}\] where, \[1 \leqslant m < 10\].
Complete step-by-step answer:
The given number is \[1000000 + 200000 + 70000\].We need to write the number in scientific notation.
We know that, if we need to write one number in scientific notation then we first need to write a number between \[1\] and \[10\] then multiply it by \[10\] to the power of a number.
Thus, \[1000000 + 200000 + 70000 = 1270000\]
So, for expressing \[1270000\] in the scientific notation we first need to write a number between 1 and \[10\] then multiply it by \[10\] to the power of a number.
That is, we can express \[1270000\] as \[1.27\] multiplied by \[10\] to the power 6.
i.e.\[1270000 = 1.27 \times {10^6}\]
Therefore we get,
Scientific notation of \[1000000 + 200000 + 70000\] is \[1.27 \times {10^6}\].
So, the correct answer is “Option B”.
Note:Scientific notation is a way of expressing real numbers that are too large or too small to be conveniently written in decimal form. It may be referred to as scientific form or standard index form, or standard form in the UK.
Small numbers can also be written in scientific notation. However, instead of the index being positive (in the above example, the index was \[3\]), it will be negative. The rules when writing a number in scientific notation is that first you write down a number between 1 and \[10\], then you multiply it by \[10\] to the power of a number.
Recently Updated Pages
The branch of science which deals with nature and natural class 10 physics CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
Define absolute refractive index of a medium
Find out what do the algal bloom and redtides sign class 10 biology CBSE
Prove that the function fleft x right xn is continuous class 12 maths CBSE
Find the values of other five trigonometric functions class 10 maths CBSE
Trending doubts
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
Write an application to the principal requesting five class 10 english CBSE
Difference Between Plant Cell and Animal Cell
a Tabulate the differences in the characteristics of class 12 chemistry CBSE
Change the following sentences into negative and interrogative class 10 english CBSE
What organs are located on the left side of your body class 11 biology CBSE
Discuss what these phrases mean to you A a yellow wood class 9 english CBSE
List some examples of Rabi and Kharif crops class 8 biology CBSE