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Guided Reading: Significant FiguresName ____________________________________________________ Pg. 66-69What is a significant figure?Key Idea: Why must measurement always be reported to the correct number of significant figures?Instruments ______________________ in the number of ____________________________________ that can be obtained from their use and thus in the precision of measurements. Write the rules for determining significant figures and give one example of each rule. Write the number of significant figures in each measurement below then write the rule you used.MeasurementNumber of sig.figs.Rule (write the rule for the first 10 problems) 123 m34,506 mm4.6000 x 104 m34 students0.04523 m34,000 m0.05730 m8765 m0.00073 m40.007 m143 grams0.074 m6.570 x 10-2 g1.072 meters76.00 meters400 mm6.00 x 104 m28 students in the class0.654 m0.00034 m8000 m340,480 g341,480 meters4.098 x 10-4 g ................
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