Chapter 0, Problem 22P

To determine

To find: the product of the given number

Answer to Problem 22P

The required product is, $6.2\times 3.9=24.18$ .

Explanation of Solution

Given: $6.2\times 3.9$

Calculation:

So, count no of digits after decimal in each entry.

These are 1 and 1.

And them to get 2, which is no. of digits (from right) after which to place decimal.

  $\begin{array}{l}62\\ \underset{\_}{\times \text{ 39 }}\\ \text{ 558 Obtain by multiply 62 by 9}\\ \underset{\_}{+\text{ 186 }}\text{ Obtain by multiply 62 by 3}\\ \text{ 2418 Add}\end{array}$

Now, place decimal after 2 digits from right to get, product to be 24.18.

Conclusion:

Hence, the required product is, $6.2\times 3.9=24.18$