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Rounding Rules

SWTJC STEM – ENGR 1201. Rounding Rules. In general, an answer should be given in engineering or scientific notation unless it is between 1 and 999.99...

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Rounding Rules

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  1. SWTJC STEM – ENGR 1201 Rounding Rules • In general, an answer should be given in engineering or scientific notation unless it is between 1 and 999.99... • In general, for calculations involving multiplication and division, round the answer to the number of significant digits of the least precise number involved.125.6  0.62 = 77.872 = 78 • In general, for calculations involving addition and subtraction, round the answer to the least accurate value.Unless otherwise indicated, use the smallest valued digit in each number to determine accuracy.18.018 + 2.14 = 20.158 = 20.16 LeastAccurate Number (nearest hundredth) Content Goal 14

  2. SWTJC STEM – ENGR 1201 Rounding Rules However, in class and unless otherwise instructed complete the calculation, then round to three significant digits. (23.45 + 181.3) / 829.1 = 0.246954529 = 2.47  10-1 Content Goal 14

  3. SWTJC STEM – ENGR 1201 Calculation Calculator Ans GeneralAns ClassAns More Examples 32.432 . 0.012 / 33.3 11.687207 12  0.012 is least precise 12.7Std. Notation 243.1 + 93.023 - 143.82 192.303 192.3 243.1 isleast accurate 192Std. Notation 125. (718.4m + 8.78m)=125 . 727.18m = 125 . 727.2m = 90,900m 90.9 . 103mEngr. Notation125 isleast precise 90.9kmAppro. Unit! Content Goal 14

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