Definition of significant digits

Significant Digits | Rules & Examples

What is meant by two significant digits? - TimesMojo

How to Count Significant Digits | Chemistry | Study.com

Chemistry Lesson: Significant Digits & Measurements - Get Chemistry Help

Counting Significant Digits when Measurements are Multiplied or Divided | Chemistry | Study.com

1.12: Significant Figures in Calculations

Determine the accuracy (the number of significant digits) of each measurement.2.4 \times 10^{3} \mathrm{~kg}