What is 3.5 × 6?

To determine the product of 3.5 and 6, we can break down the multiplication step-by-step. When we multiply a decimal by a whole number, it’s similar to multiplying whole numbers but paying attention to the decimal.

First, we can think of 3.5 as ( \frac{35}{10} ). Thus, multiplying 3.5 by 6 can be expressed as:

[

3.5 \times 6 = \frac{35}{10} \times 6 = \frac{35 \times 6}{10}

]

Calculating ( 35 \times 6 ) gives us 210. So now we have:

[

\frac{210}{10} = 21

]

Therefore, the product of 3.5 and 6 is 21. This reasoning demonstrates how to accurately perform the multiplication and correctly identify the answer. The value 21 is the only option that reflects this multiplication correctly, illustrating an understanding of decimal operations in the context of whole number multiplication.