Multiplying decimals can be easily be calculated just remove the decimals and multiply then add the total number of decimal places to the answer.
What is a decimal ?
A decimal can be thought of as a point or dot separating the whole part and the fractional part.
In the given question we have to multiply 3.42 x 5.15 first we will remove the decimals and multiply. so, 342 x 515 = 176130.
Here the two multiples have total 4 digits after the decimal place so we write 176130 and count from right side four digits and it becomes 17.6130 or we can write 17.613 as 0 to the rightmost of the decimal has no meaning.
Learn more about Decimal multiplication here :
https://brainly.com/question/548650?referrer=searchResults
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