Gradebool Sapling Learning To what decimal place should each answer be rounded?

Question

Gradebool Sapling Learning To what decimal place should each answer be rounded? How many significant figures does the rounded answer have? (a) 101 cm-99.1 en =1.9 cm (unrounded) O ones place O After rounding, the number O tenths plade 1 significant figure 2 significant figures. and thus has should be reported to the O hundredths place O 3 significant figures (b) (unrounded) 0.5 atm+9.8 atm= 10.3 atm O 1 significant figure and thus has O 2 significant figures O ones place After rounding, the number should be reported to the O tenths place O hundredths place Exit Check AnswerNext

Explanation / Answer

Significant figures

(a) 101 cm - 99.1 cm = 1.9 cm (unrounded) = 2 (rounded)

After rounding the number, it is reported to the : once place

Thus the number has : 1 significant figure

(b) 0.5 atm + 9.8 atm = 10.3 atm (unrounded) = 10.3 (rounded)

After rounding the number should be reported to : tenth place

Thus the number has : 3 significant figures

(c) Measuring mass by digital balance

Statement decsribing what should be done is,

Press tare button, wait for balance to show 0.00 g and then put your sample and record the mass.

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