(0:40)Real-Life Applications of Mass Units: Use milligrams (mg) in science, grams (g) for grocery items, kilograms (kg) for body weight, and tonnes (t) for heavy cargo.

(1:33)Converting Mass Units: Convert between milligrams, grams, kilograms, and tonnes by multiplying or dividing by 1000. Multiply when converting to a smaller unit and divide when converting to a larger unit.

(2:26)Standardising Mass Units in Calculations: Convert all measurements to the same unit before adding or subtracting, then simplify the results.