To check the answer to a decimal multiplication problem, you can use a couple of different methods. The most straightforward approach is to perform the multiplication again and see if you arrive at the same result. This step is crucial, as a simple arithmetic mistake can lead to an incorrect answer.
Another method involves estimating the values before multiplying. Round the decimals to the nearest whole number and multiply these rounded numbers. This will give you a rough idea of what the product should be close to. If your actual multiplication result is significantly different from this estimate, there may be an error in your calculations.
Lastly, you can also utilize a calculator to verify your multiplication. Just input the same decimal numbers into a calculator and compare the outcome with your own. If both results match, you can be more confident that your answer is correct.