Question

Convert the following d fractions. Write answer 5. 0.450

Answer 1

To round numbers to three significant figures, adjust each given number to preserve only the three most important digits. Already rounded numbers like 7.210 × 10^6 and 5.00 × 10^-6 remain unchanged.

Step-by-step explanation:

To round each number to three significant figures:

1. c. 0.0004505 becomes 0.000450 when rounded.
2. d. 0.00045050 also becomes 0.000450 when rounded.
3. e. 7.210 × 10^6 remains the same as it already has three significant figures.
4. f. 5.00 × 10^-6 remains the same as it already has three significant figures.

For fractions like 0.00675 / (0.15)^m / 0.00300 / (0.10)^m, you would first simplify to get the basic fraction form and then round it to three significant figures. Similarly, you would convert units before rounding, such as 500 mm to 50 cm, or convert proportions to solve for unknowns as in the liters to milliliters conversion.