A red blood cell and a white blood cell have a combined total mass of
If the red blood cell has a mass of
Numbers of Any Magnitude, SMB-022 MC
The age of the Universe is estimated to be 14 000 000 000 years old.
This number can also be written in scientific notation as
Numbers of Any Magnitude, SMB-021
An insect expert estimates that an anthill 30 cm high contains
He also estimates that a 25 cm high anthill contains
If his estimations are correct, how many more ants live in the 30 cm high anthill than the 25 cm high one? (2 marks)
Numbers of Any Magnitude, SMB-020
The diameter of a pinhead is 0.0023 mm.
What is this measurement written in scientific notation?
Numbers of Any Magnitude, SMB-019 MC
The diameter of the earth is approximately 13 000 kilometres.
Which of these shows 13 000 in scientific notation?
Numbers of Any Magnitude, SMB-018 MC
One billion is one thousand million.
Which of the following is 300 billion?
Numbers of Any Magnitude, SMB-015
The width of red blood cell is 8 nanometres or
How many red blood cells, lined up side by side in straight line, would it take to form a 1 cm distance. (2 marks)
Numbers of Any Magnitude, SMB-014
The moon is 384 400 kilometres from the Earth.
Express this distance in scientific notation. (1 mark)
Measurement, STD2 M1 2009 HSC 25b
The mass of a sample of microbes is 50 mg. There are approximately
In scientific notation, what is the approximate mass in grams of one microbe? (2 marks)
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Numbers of Any Magnitude, SMB-013
What is 0.000709 expressed in scientific notation? (1 mark)
Numbers of Any Magnitude, SMB-011 MC
What is 0.002073 expressed in scientific notation with two significant figures?
Measurement, STD2 M1 2015 HSC 1 MC
What is 1 560 200 km written in standard form correct to two significant figures?