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Significant Figure Qualifying Quiz T1 (you need 100% on this to access the Significant Figures Credit Quiz)

1.

The number 0.230 has ____ significant figures.

  • 1
  • 2
  • 3
  • 4
  • 5

3

  • Hint: Leading zeroes are never significant, trailing zeros are significant if there is a decimal point in the number.
2.

What is the answer to the following equation with correct significant figures?

15000 x 1.26570 = ______

  • 20000
  • 18985.5
  • 18990
  • 19000
  • 18986

19000

  • Hint: With multiplication, the number of significant figures in the answer is given by the smallest number of significant figures.
3.

What is the answer to the following equation with correct significant figures?

234 + 1.26 = ______

  • 234
  • 235.2
  • 235
  • 235.3
  • 235.26

235

  • Hint: With addition, the number of significant figures in the answer is given by the smallest number of decimal places.
4.

What is the answer to this conversion problem, with correct significant figures?
Convert 13.4 oC to K (K = 273.15 + C).

  • 287 K
  • 290 K
  • 286.55 K
  • 286.6 K
  • 286.5 K

286.6 K

  • Hint: This is a temperature conversion problem, so we need to use addition rules. The answer needs as many decimal places as what you are starting with.
5.

The number 25.00 has ____ significant figures.

  • 1
  • 2
  • 5
  • 3
  • 4

4

  • Hint: Leading zeroes are never significant, trailing zeros are significant if there is a decimal point in the number.
6.

What is the answer to the following equation with correct significant figures?

234.1 + 1.26 = ______

  • 235.36
  • 235
  • 235.3
  • 235.4
  • 236

235.4

  • Hint: With addition, the number of significant figures in the answer is given by the smallest number of decimal places.
7.

What is the answer to this conversion problem, with correct significant figures?
Convert 5.000 m to cm

  • 500.000 cm
  • 500 cm
  • 500.00 cm
  • 500. cm
  • 500.0 cm

500.0 cm

  • Hint: The answer needs as many significant figures what you start with.
8.

The number 2346 has ____ significant figures.

  • 1
  • 2
  • 3
  • 4
  • 5

4

  • Hint: All non-zero digits are significant.
9.

What is the answer to the following equation with correct significant figures?

0.23400 x 1.267000 = ______

  • 0.296478
  • 0.29648
  • 0.297
  • 0.30
  • 0.2965

0.29648

10.

What is the answer to this conversion problem, with correct significant figures?
Convert 5.0 lb to g

  • 2270 g
  • 2267.96 g
  • 2267.962 g
  • 2268 g
  • 2300 g

2300 g

  • Hint: The answer needs as many significant figures what you start with.