'Significant digit' presentation slideshows

Chemistry Chapter 3 Notes

Chemistry Chapter 3 Notes. Using and Expressing Measurements measurement a quantitative description that includes both a number and a unit (3.1).

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Uncertainty

Uncertainty. All about uncertainty _____________________________________. Uncertainty. All about uncertainty ALL measurements have some uncertainty. Uncertainty. _____________ numbers: Examples: ___________________ ___________________ ___________________ ___________________

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SI units and Conversions

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TECHNICAL COMMUNICATION

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MEASUREMENT AND CALCULATIONS

MEASUREMENT AND CALCULATIONS. Chapter 9.2. Why is it important to be accurate? Drug design Construction Sports. Example. At the 2008 Olympics, Usain Bolt and Asafa Powell were very close. They both registered times of 9.7 seconds. How are significant digits important here?

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LO: To add/subtract any pair of two-digit numbers, including crossing 100.

LO: To add/subtract any pair of two-digit numbers, including crossing 100. 28.06.05. What is 54 add 37?. What is the sum of 43 and 66?. What is 76 subtract 34?. What is the difference between 85 and 58?. How much more is 97 than 45?. What is the total of 67 and 82? etc.

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SIGNIFICANT DIGITS

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Sig digs Significant Digits

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SI units and sig figs

SI units and sig figs. SI (systeme internationale). Precision: to describe how well a group of measurements made of the same object or event under the same conditions actually do agree with one another. These points are precise with one another but not accurate.

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Significant Digits

Significant Digits. Uncertainty of Measurement. Three Rules. Non-zero digits are significant Zeros between two significant digits are significant Zeros at the right end of a number, after a decimal point, are significant. Number 455.6 7.98 0.6224 5.2.

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4.158

4 digits. 4.158. thousandths. Precision =. Accuracy =. Round to 3 significant figures. 4.16. 5 digits. 74.158. thousandths. Precision =. Accuracy =. Round to 3 significant figures. 74.2. 6 digits. . 158700. millionths. Precision =. Accuracy =. Round to 3 significant figures.

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Significant Digits

Significant Digits. Significant Digits. Significant figures are extremely important when reporting a numerical value. The number of significant figures used indicates the confidence (certainty) of that value. Significant Digits. How many?. Number known to:. Number of sig. figures. 1.

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Measurement Notes

Measurement Notes. Chapter 2:1. Measurement. A way to describe the world with numbers Answers questions such as how long, how much, or how far. Estimation. A rough measurement of an object You use prior knowledge to help you with an estimation

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Percent Error Sample Problem

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Significant Figures in Mathematical Operations

Significant Figures in Mathematical Operations. The result of the mathematical operation cannot be expressed to any greater degree of certainty than the measured values used in the operation. In a series of calculations ~. Carry the extra digits through the final results, then round

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Significant Figures

Significant Figures. Rules and Applications. Rules for Determining Significant Figures. 1.) All Non-Zero digits are Significant. For example: 134.987 m = SIX Significant Figures. 2.) All Zeros between two non-zero digits are significant.

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Radix Sort

Radix Sort. Algorithm sort by the least significant digit first (counting sort) => Numbers with the same digit go to same bin reorder all the numbers: the numbers in bin 0 precede the numbers in bin 1, which precede the numbers in bin 2, and so on sort by the next least significant digit

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Error in Measurement

Error in Measurement. Some error or uncertainty always exists in any measurement. skill of the measurer limitations of measuring instruments When recording measurements, report all digits known for certain plus one last digit that is an estimate. Recording Measurements.

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Aim: How can we express very large and very small numbers easily?

Aim: How can we express very large and very small numbers easily?. Do Now Choose one: Express 534 megameters in meters Describe in full sentences the method for converting between unit prefixes (for example grams to kilograms). Big and small numbers.

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Significant Digits

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