Question

find 5.55 × 6.4. 5.55 × 6.4 = \square

Explanation:

Step1: Multiply as whole numbers

First, ignore the decimal points and multiply 555 by 64.
$$555\times64 = 555\times(60 + 4)=555\times60+555\times4 = 33300+2220 = 35520$$

Step2: Count decimal places

The number 5.55 has 2 decimal places and 6.4 has 1 decimal place. So in total, there are \(2 + 1=3\) decimal places.

Step3: Place decimal in result

Now, take the product 35520 and place the decimal point 3 places from the right.
So, \(35520\) with decimal point 3 places from the right is \(35.52\).

Answer:

\(35.52\)