Let's analyze each digit: The zeros before 4 (0.00...) are leading zeros and are NOT significant—they only show where the decimal point is. The digit 4 is the first non-zero digit and IS significant. The digit 5 IS significant. The final zero IS significant because it comes after a non-zero digit and after the decimal point, indicating precision. Total significant figures: 4, 5, and 0 = 3 significant figures. This concept frequently appears in ECZ Paper 1, especially in questions involving measurements and calculations.

Break down complex topics into smaller, manageable chunks for easier recall.

Zambia

• ivwananji siwale – 29 pts

• Mid-point of A Line
• Equation of a Straight Line
• Parallel and Perpendicular Lines
• Area of Rectilinear Figures
• Distance of A Straight Line