Numbers of Any Magnitude, SMB-023

A red blood cell and a white blood cell have a combined total mass of `4.2 xx 10^-11` grams.

If the red blood cell has a mass of `2 xx 10^-12` grams, what is the mass of the white blood cell? (2 marks)

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`4.0 xx 10^-11\ text(grams)`

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`text{Mass}`	`=4.2 xx 10^-11-2 xx 10^-12`
	`= 4.0 xx 10^-11\ text{(by calculator)}`