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Add or subtract the following measurements. Ensure each answer contains the correct number of significant digits.

[tex]
\[
\begin{aligned}
18.500 \, \text{mL} - 6.97 \, \text{mL} &= 11.53 \, \text{mL} \\
14.8 \, \text{mL} + 6.677 \, \text{mL} &= 21.5 \, \text{mL} \\
18.727 \, \text{mL} + 17.6 \, \text{mL} &= 36.3 \, \text{mL} \\
\end{aligned}
\]
[/tex]

Answer :

Sure! Let's go through each calculation step-by-step, making sure our answers have the correct number of significant digits.

### Calculation 1: [tex]\(18.500 \, \text{mL} - 6.97 \, \text{mL}\)[/tex]

1. Identify significant digits:
- 18.500 has significant digits up to the thousandth place.
- 6.97 has significant digits up to the hundredth place.

2. Determine the least number of decimal places:
- 6.97 has the least number of decimal places (2 decimal places).

3. Perform the subtraction:
- [tex]\(18.500 - 6.97 = 11.530\)[/tex]

4. Round the result to 2 decimal places:
- The final answer is [tex]\(11.53 \, \text{mL}\)[/tex].

### Calculation 2: [tex]\(14.8 \, \text{mL} + 6.677 \, \text{mL}\)[/tex]

1. Identify significant digits:
- 14.8 has significant digits up to the tenth place.
- 6.677 has significant digits up to the thousandth place.

2. Determine the least number of decimal places:
- 14.8 has the least number of decimal places (1 decimal place).

3. Perform the addition:
- [tex]\(14.8 + 6.677 = 21.477\)[/tex]

4. Round the result to 1 decimal place:
- The final answer is [tex]\(21.5 \, \text{mL}\)[/tex].

### Calculation 3: [tex]\(18.727 \, \text{mL} + 17.6 \, \text{mL}\)[/tex]

1. Identify significant digits:
- 18.727 has significant digits up to the thousandth place.
- 17.6 has significant digits up to the tenth place.

2. Determine the least number of decimal places:
- 17.6 has the least number of decimal places (1 decimal place).

3. Perform the addition:
- [tex]\(18.727 + 17.6 = 36.327\)[/tex]

4. Round the result to 1 decimal place:
- The final answer is [tex]\(36.3 \, \text{mL}\)[/tex].

These steps will help ensure each answer respects the significant digits rule, giving us a precise and accurate result for each operation.

Thanks for taking the time to read Add or subtract the following measurements Ensure each answer contains the correct number of significant digits tex begin aligned 18 500 text mL 6 97. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

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