How can you check the answer to a decimal multiplication problem?
You can check it the same way you do any multiplication problem. Divide the product by one of the multipliers.
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To check the answer to a decimal multiplication problem, you can follow these steps:
1. Multiply the decimal numbers again: Start by multiplying the decimal numbers in the original problem, just as you did initially.
2. Count the number of decimal places: Determine the total number of decimal places in the original problem.
3. Round the answer: Round the answer you got after multiplying the decimal numbers again to the same number of decimal places as in the original problem.
4. Compare the rounded answer: Compare the rounded answer with the original answer given. If they are the same, then the original answer is likely correct. If they are different, there might be an error in the initial multiplication.
For example, let's say you have the decimal multiplication problem 2.34 x 1.23. After multiplying these numbers, you get an answer of 2.8782.
Next, count the decimal places in the original problem, which is two.
So, rounding the answer 2.8782 to two decimal places, you would get 2.88.
Finally, compare the rounded answer (2.88) with the original answer given. If they match, it suggests that the original answer of 2.8782 is likely correct. If they don't match, there may be an error in the initial multiplication.