1. SIGNIFICANT DIGITS

2. SIGNIFICANT DIGITS
The certainty of any measurement is communicated by the number of significant digits in its measurement.
In a measured value, they are the digits that are known for certain and include the last digit that is estimated or uncertain.

3. THE RULES: 1. Non-zero digits are always significant. 23.8
2. Zeros at the beginning are never significant.
0.25

4. THE RULES: 3. Zeros between non-zeros are always significant. 5006
4. Zeros at the end of an integer are USUALLY not significant.
2500

5. THE RULES:
5. Zeros after a decimal and behind a non- zero are significant.
0.250

6. HOMEWORK: