2 Finding Sig Figs
Find the sig figs using OCEANS or RULES.
Questions and Answers
- 1.
How many significant figures are in: 3.10e23 cm
Explanation
OCEAN METHOD explanation: Decimal is PRESENT - so PACIFIC OCEAN (left side of number) - find the first number that is not a zero, it is a (3) - once it is found that number is significant and everything after it is also significant
RULES METHOD explanation: Rule 4) Trailing zeros are only significant if there is a decimalRate this question:
- 2.
How many significant figures are in: 0.0058 cm
Explanation
OCEAN METHOD explanation: Decimal is PRESENT - so PACIFIC OCEAN (left side of number) - find the first number that is not a zero (5) - once it is found that number is significant and everything after it is also significant
RULES METHOD explanation: RULE 3) Leading zeros are never significantRate this question:
- 3.
How many significant figures are in: 1.4500 cm
Explanation
OCEAN METHOD explanation: Decimal is ABSENT - so Atlantic OCEAN (right side of number) - find the first number that is not a zero, it is a (5) - once it is found that number is significant and everything after it is also significant
RULES METHOD: Trailing zeros are only significant if there is a decimal.
RULE METHOD explanation: RULE 4) Trailing zeros are only significant if there is a decimalRate this question:
- 4.
How many significant figures are in: 7.108e2 cm
Explanation
OCEAN METHOD: Decimal is ABSENT - so Atlantic OCEAN (right side of number) - find the first number that is not a zero, it is an (8) - once it is found that number is significant and everything after it is also significant
RULES METHOD: Zeros sandwiched between numbers 1 thru 9 are significant.
RULES METHOD: RULE 2) Zeros smashed between 1-9 are significant.Rate this question:
- 5.
How many significant figures are in: 14.6 cm
Explanation
OCEAN METHOD explaination: Decimal is PRESENT - so PACIFIC OCEAN (left side of number) - find the first number that is not a zero, it is a (1) - once it is found that number is significant and everything after it is also significant
RULES METHOD explaination: The numbers 1 thru 9 are always significant
RULES METHOD: RULE 1) Numbers 1,2,3,4,5,6,7,8,9 are ALWAYS significant.Rate this question:
- 6.
How many sig figs are in the measurement 100 miles?
Explanation
OCEANS explanation: the decimcal if absent, so start on the Atlantic ocean side and find your first number that is a 1,2,3,4,5,6,7,8,9. The 1 is the only number that qualifies.
RULES explanation: Trailing zeros are only significant if there is a decimal. No decimal, so those 2 zeros are not significant.Rate this question:
- 7.
There are 512 students enrolled at Bushland HS. How many sig figs are in that number?
Explanation
Sig figs are only in measurements. You can count students, counting is NOT a measurement.Rate this question:
- 8.
Only __________ have sig figs?
Explanation
Sig figs, or significant figures, are a way to indicate the precision or accuracy of a measurement. They are used to show the number of reliable digits in a measurement. Therefore, only measurements have significant figures, as they are the values that are being measured and have a certain level of precision associated with them. Other types of data or information may not have sig figs as they may not involve measurements or quantifiable values.Rate this question:
- 9.
Which measurement has 6 sig figs?
- A.
100000 meters
- B.
654321 people
- C.
5.47832 centimeters
- D.
0.00092 mililiters
Correct Answer
C. 5.47832 centimetersExplanation
The question says find the measurement with 6 sig figs. The number of people is not a measurement. It is a counting number.Rate this question:
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- 10.
There are 420 apples on the apple tree. 420 apples has 2 sig figs.
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Only measurements have sig figs. 420 apples has NO sig figs because it is NOT a measurement. Things you can count do NOT have sig figs. Counting is not a measurementRate this question:
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- 11.
Find all numbers with no sig figs.
- A.
0.20 miles
- B.
5.5 e2 cm
- C.
2.3e1 atoms
- D.
34 liters
- E.
0.10 cents
Correct Answer(s)
C. 2.3e1 atoms
E. 0.10 centsExplanation
Only measurements have sig figs. Atoms and cents are not measurements, therefore do not have sig figs.Rate this question:
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Mar 20, 2023Quiz Edited by
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Sep 11, 2015Quiz Created by
Kyle Pearson
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