Which model shows the correct expression and solution to 0.3×0.4

Question

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Answer 1

To find the product of 0.3 and 0.4, you can follow these steps:

1. Multiply the numbers as if they were whole numbers: \[ 3 \times 4 = 12 \]

2. Count the total number of decimal places in the original numbers:

   • 0.3 has 1 decimal place.
   • 0.4 has 1 decimal place.
   • In total, there are 2 decimal places.

3. Place the decimal point in the result:

   • Since we have 12 from our multiplication and need to account for 2 decimal places, we place the decimal point two places from the right: \[ 0.12 \]

Thus, the correct expression and solution for \(0.3 \times 0.4\) is:

\[ \boxed{0.12} \]