Question

______number (0, 1 ,2 ,3 etc.).

Consider the following calculation:

1. 143.321 g

2. + 17.89 g

3. + 100.1 g

4. 261.311 g

The answer should be round to _____________________ decimal places.

Answer 1

The final answer, after adding the numbers together, should be rounded to the same number of decimal places as the least precise number involved in the addition. In this case, the answer should be rounded to the tenths place, resulting in 261.3 g.

Step-by-step explanation:

When performing an addition involving multiple numbers with different numbers of decimal places, the rule is to round the final answer to the same number of decimal places as the number with the fewest decimal places. This principle ensures that we do not report a false precision that is not supported by the least precise measurement.

In your calculation, you have the numbers 143.321 g (thousandths place), 17.89 g (hundredths place), and 100.1 g (tenths place). After performing the addition, the tentative result is 261.311 g. However, since the least precise number (100.1 g) is to the tenths place, the answer should be rounded off to the tenths place. Therefore, the final answer should be rounded to 261.3 g.