Density Calculations Worksheet I for Grade 9 Science, featuring practice problems and solutions for calculating density using the formula mass/volume.

- The worksheet contains several calculation errors that need correction.
- In problem 1b, the formula for density is incorrectly written as `d = M * V` instead of `d = M / V`. The correct calculation is `d = 95 g / 950 mL = 0.1 g/mL`.
- In problem 2b, the mass conversion is correct (1.5 kg = 1500 g), but the final answer is mislabeled as "M = 15g" instead of "d = 15 g/mL".
- In problem 2c, the density calculation is correct (`d = 0.5 g / 520 mL = 0.00096 g/mL`), but the final answer should be rounded appropriately and labeled correctly as `d = 0.00096 g/mL` or `9.6 x 10^-4 g/mL`.
- The word problem solution is correct: `d = 40.5 g / 15.0 mL = 2.7 g/mL`.