Question

Find \[2.71 \times 5\]?

Answer 1

Hint: In this problem, we have to find the value of \[2.71 \times 5\]. We will use multiplication and then we will count the digit from right to left to plot the decimal point.
Thus we will perform decimal multiplication in this question.

Complete step-by-step answer:
The given question is \[2.71 \times 5\] .
First, multiply \[5\] with \[2.71 \times 5\] starting from right to left .
\[2.71 \times 5 = 13.55\]
So, we multiply \[5\] with \[1\], we get \[5\] at the unit digit.
Then we multiply \[5\] with \[7\], we get \[35\] at tens digit , but instead we write \[5\] and carry \[3\] to hundredth digits and add into it .
Then we multiply \[5\] with \[2\] , we get \[10\] and add \[3\] to it to get \[13\].
Then we finally count the decimal point from the right side and put it into the answer.
Hence \[13.55\]is the required answer.
Therefore, \[2.71 \times 5 = 13.55\].
So, the correct answer is “ 13.55”.

Note: We note that the given problem is in decimal form. Decimal numbers are those numbers which consist of two parts:
Whole number (left of decimal)
Fractional number(right of decimal)
These two parts are separated by a decimal point.
For example: \[13.55\] is a decimal number. It consists of two parts \[13\] and \[55\] separated by decimal point ( . ) . This is read as \[13\] point \[55\].
 While multiplication of decimal numbers by any number we multiply as usual and just plot the decimal point after counting from right.
For example: \[2.25 \times 5 = 11.25\].
When both the multiplying numbers are decimal numbers then we simply count and add the decimal point and plot into the answer. For example: \[2.25 \times 1.5 = 3.375\].