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1. Intro to Physics Units
Counting Significant Figures
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
How many significant figures are in each of the following numbers?
a) 0.0032
b) 10790
c) 08.02
A
a) 5, b) 5, c) 4
B
a) 2, b) 5, c) 3
C
a) 5, b) 3, c) 3
D
a) 2, b) 4, c) 3
Verified step by step guidance1
Understand the concept of significant figures: Significant figures are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and any trailing zeros in the decimal portion.
Analyze number a) 0.0032: Identify the significant figures by ignoring leading zeros. The digits '3' and '2' are significant, giving us 2 significant figures.
Analyze number b) 10790: Identify significant figures by considering all non-zero digits and any zeros between them. The digits '1', '0', '7', '9' are significant. The trailing zero is not significant unless specified by a decimal point, giving us 4 significant figures.
Analyze number c) 08.02: Ignore leading zeros and identify significant figures. The digits '8', '0', and '2' are significant, giving us 3 significant figures.
Review the correct answer: Compare your analysis with the given correct answer, which is a) 2, b) 4, c) 3, confirming the understanding of significant figures.
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