Significant Figures And Rounding

Reviewed by Editorial Team

The ProProfs editorial team is comprised of experienced subject matter experts. They've collectively created over 10,000 quizzes and lessons, serving over 100 million users. Our team includes in-house content moderators and subject matter experts, as well as a global network of rigorously trained contributors. All adhere to our comprehensive editorial guidelines, ensuring the delivery of high-quality content.

Learn about Our Editorial Process

| By Shuling

Shuling

Community Contributor

Quizzes Created: 6 | Total Attempts: 14,252

| Attempts: 746

Quiz Flashcard Lesson

Questions

Feedback

During the Quiz End of Quiz

Difficulty

Easy First Hard First Sequential

1/15 Questions

Tell how many significant figures are in: 7108 cm

About This Quiz

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.

Quiz Preview

2.

Tell how many significant figures are in: .0058 cm

Explanation
Leading zeros are not significant

Rate this question:
3.

Tell how many significant figures are in: 31.0 cm

Explanation
Zeros at the end and right of the decimal point are significant

Rate this question:
4.

Tell how many significant figures are in: 14500 cm

Explanation
Trailing zeros are not significant

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.

.88 cm + 2.291 cm = ? cm

Explanation
Round to the nearest 1/100th because of .88

Rate 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.

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:

1
12.

.81 g + 158 g = ? g

Explanation
158 is to the nearest g (ones column) so answer goes to the ones column.

Rate this question:

1
13.

64.07 m - 1.3 m = ? m (this is different math!)

Explanation
round to nearest 1/10th

Rate this question:

0
14.

16.2 g - 9.20 g = ? g

Explanation
round to nearest 1/10th

Rate this question:
15.

.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 place

Rate this question: