Question

How do you write four trillion in scientific notation?

Answer 1

Hint: In the given question, we have been given to write the scientific notation of a number written in phrase. To solve this, we must know what a scientific notation is – it is a way of writing extremely large numbers including lots of zeroes, in the form of a single digit followed by a decimal point, followed by the rest of non-zero numbers, followed by multiplication with ten raised to the power of condensed numbers, including the zeroes.

Complete step by step answer:
In the given question, we have to write the scientific notation of four trillion.
First, one trillion is one followed by twelve zeroes, or, \[1,000,000,000,000\].
Now, we use scientific notation,
\[1 \times {10^{12}}\]
Hence, four trillion can be written as \[4 \times {10^{12}}\].

Note: In the given question, we had to write the scientific notation of four trillion. We must first of all know the correct procedure of writing the scientific notation, a point where a lot of students make an error – there is only one digit on the left of the decimal point, and the rest of the digits go behind the point. We cannot put the decimal anywhere we want. Then the place where there can be an error is not knowing the number of zeroes of a given figure; not knowing how many zeroes there are in million, billion, and so on and so forth.