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Rounding Significant Figures Calculator
Rules for rounding. When making calculations with measured values, the answer will need to be rounded to the correct number of significant figures according to the following rules. Round down whenever the digit following the last significant figure is a 0,1,2,3, or 4. For example, 30.24 becomes 30.2.
rounding off to significant figures

GLP 9 - NIST
There are two rules to remember when rounding off numbers: If the first digit to be dropped is . 4 or less, it and the following digits are just dropped. Ex. Rounding off 5.3132 to 3 significant figures = 5.31. If the first digit to be dropped is . 5 or greater, the last retained digit is increased by 1. Ex. Rounding off 15.684 to 3 significant ...
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[DOC File]Rules for Determining Significant Figures in Measurements
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Rules for Rounding Numbers. If the digit to the . immediate right. of the last significant figure is < 5, do not change. the last significant figure. > 5, round up. the last significant figure. = 5, and is . followed by. a . nonzero digit, round up. the last significant figure. = 5, and …
significant figures and rounding

[DOC File]Chemistry - North Thurston Public Schools
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When multiplying or dividing measured quantities, what determines the number of significant figures in the result? When adding or subtracting measured quantities, what determines the number of significant figures in the result? What are the rules for rounding off the results of calculations? Explain the difference between precision and accuracy.
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[DOC File]Rules for Recognizing Significant Figures
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Practice Problems for Significant Figures . RULE -1: If the decimal is . Present: Find the first non zero on the left, then count all digits to the . RIGHT. If the decimal is . Absent: Find the first non zero on the right, then count all digits to the . LEFT. RULE-2: Every digit in scientific notation is Significant
significant figures in chemistry

[DOC File]Rules for Using Significant Figures in Mathematical Operations
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***Exact quantities do not affect the process of rounding an answer to the correct number of significant digits.*** Calculating with Significant Figures. Multiply/Divide. Count the number of significant figures in each of your measurements used in the calculation. The . answer. will have as many as the . least number of significant digits.
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[DOCX File]Cumulative Problems - Chemistry | University of Missouri
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B. Rules for Counting Sig Figs. Rule #1: Rule #2: Rule #3: Rule #4: You must memorize the rules and learn to use them or lose points throughout the year! Example 1L.2 State the number of significant figures in the following set of measurements: 1.2304 mm. 1.23400 cm. 1.200 x 105 mL. 0.0230 m. 0.02 cm. 8 ounces = 1 cup. 30 cars in the parking lot
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[DOCX File]PC\|MAC
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Chemistry Name: Worksheet: Significant figures Date: A. Read pp. 56 - 62 and answer the following questions: 1. _____ (T/F) Significant figures include all the digits that can be known precisely and the last digit which must be estimated. 2. _____ (T/F) Significant figures are an indication of the precision of a measurement. 3.
rounding significant figures in chemistry

[DOC File]Significant Figures Practice Worksheet
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In the midst of all these technicalities, it is important to keep in mind the reason why we use significant figures and rounding rules—to correctly represent the certainty of the values we report and to ensure that a calculated result is not represented as being more certain than …
rounding off to significant figures

[DOC File]Rules for Counting Significant Figures
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Rounding Rules. Identify the first two significant digits. Moving from left to right, the first non-zero number is considered the first significant digit. Zeros, which follow a decimal point, when there are only zeros ahead of the decimal point, are not considered significant figures.
scientific rounding rules for 5

Significant figures and rounding rules