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 Which zeros automatically count as significant? Between two non-zero digits How many significant digits in 36.00 m? 4 - the final zeros count because they are after the decimal AND after a non-zero digit. Why bother with significant digits? Significant digits tell you how well the values used in a calculation were measured. The more decimal places a measurement is the more ... it is. Precise The formula for percent error is... O-A/A * 100 The A in the percent error formula stands for the accepted value The O in the percent error formula stands for the ... observed or measured value In physics, we hope for less than ... % error in the lab. 10% 13.0050 has how many sig digs? 6 - the zeros between 3 and 5 count because they are between non-zeros. The last zero counts ecause it is after a decimal AND ALSO after a non-zero. 99.01 + 1 = ? 100. 99.01 goes to the hundreths place but 1 only goes to the ones place. Since you are adding, your answer must go to the ones place. Putting a decimal after the second zero makes both zeros count. Write 1400 as scientific notation. 1.4 x 10^3