About Lesson
By the end of this subtopic, students will:
-
Round numbers to a required number of decimal places (DP) or significant figures (SF)
-
Estimate the result of a calculation for checking purposes
-
Understand when and why approximation is used (e.g. during mental math or measurement)
📏 Examples:
-
Round 3.786 to 2 DP → 3.79
-
Round 0.00576 to 2 SF → 0.0058