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:

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