Significant Figures And Rounding
In mathematics, significant figures are numerical digits that carry and add up to its measurement resolution. Rounding off, on the other hand, is turning decimals and fractions into the closest whole number. Find out more below.
Questions and Answers
- 1.
Tell how many significant figures are in: 31.0 cm
Explanation
Zeros at the end and right of the decimal point are significantRate this question:
- 2.
Tell how many significant figures are in: .0058 cm
Explanation
Leading zeros are not significantRate this question:
- 3.
Tell how many significant figures are in: 14500 cm
Explanation
Trailing zeros are not significantRate this question:
- 4.
Tell how many significant figures are in: 7108 cm
Explanation
Zeros that are surrounded by significant figures are significant as well.Rate this question:
- 5.
Tell how many significant figures are in: 14.600 cm
Explanation
Zero at the end and right of the decimal point is significant, the zero after the 6 is surrounded by significant figures.Rate this question:
- 6.
46.4 cm x 18.2 cm x 3.8 cm = ? cubic centimeters. (leave the units off, no comma)
Explanation
You are allowed 2 sig. figs, trailing zeros do not count but MUST be written or the decimal point will be in the wrong place.Rate this question:
- 7.
.0034 cm x .056 cm = ? square centimeters.
Explanation
leading zeros are not significant but must be written or the decimal point will be in the wrong placeRate this question:
- 8.
14.0 g / 8.10 cm3 = ? g/cm3
Explanation
Each of the numbers had 3 sig. figs.Rate this question:
- 9.
5100 m x 12.33 m = ? square meters (no comma)
Explanation
5100 has 2 sig. figs. so answer must be rounded to 2 sig. figs. You must include trailing zeros to get decimal point in right place.Rate this question:
- 10.
27.0 m / 3.568 s = ? m/s
Explanation
27.0 has 3 sig. figs., you are allowed 3 in your answer. 7.567 rounds up to 7.57.Rate this question:
- 11.
64.07 m - 1.3 m = ? m (this is different math!)
Explanation
round to nearest 1/10thRate this question:
- 12.
16.2 g - 9.20 g = ? g
Explanation
round to nearest 1/10thRate this question:
- 13.
93.1 kg - 85 kg = ? kg
Explanation
round to the nearest kg (ones column) due to the fact that 85 kg is listed to the nearest kg (ones)Rate this question:
- 14.
.88 cm + 2.291 cm = ? cm
Explanation
Round to the nearest 1/100th because of .88Rate this question:
- 15.
.81 g + 158 g = ? g
Explanation
158 is to the nearest g (ones column) so answer goes to the ones column.Rate this question:
Quiz Review Timeline +
Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.
-
Current Version
-
Mar 16, 2023Quiz Edited by
ProProfs Editorial Team -
Sep 17, 2013Quiz Created by
Shuling
- Cartography Quizzes
- Civics Quizzes
- Economics Quizzes
- El112 Quizzes
- English Quizzes
- Geography Quizzes
- History Quizzes
- Humanities Quizzes
- Law Quizzes
- Linguistics Quizzes
- Logic Quizzes
- Philosophy Quizzes
- Political Science Quizzes
- Politics Quizzes
- Science Quizzes
- Social Science Quizzes
- Sociology Quizzes
Back to top