Question

state the number of significant figures scientific notation and unit prefix , explain all the calculations

1. State the number of significant figures, scientific notation, and unit prefix. (a) 8,897.90 ), (b) 0.002343 , (c) 3,438, 000 , (d) 358.4600 , (e) 0.2860 M) m) G) n) T)

Answer 1

‘Significant figures’ represents to the number of important single digits (0 to 9) in the coefficient of an expression in scientific notation. The number of significant figures in a given mathematical expression indicates the confidence or precision with which one can state a quantity. Thus the following is the description of each of the given values.

Q. no	Values	scientific notation	significant figures	unit prefix
(a)	8897.90	8.89790x103	6 (Because the no. of digits is 6-including either side of decimal point)	The 'M' stands for mega. It means 106
		8.8979x103	5(But in the corresponding notation, the no. of digits is 5-including either side of decimal point)
(b)	0.002343	2.343x10-3	4	'm' stands for milli. It is 10-3
(c)	3438000	3.438000x106	7	'G' stands for giga. It is equal to 109
		3.438x106	4
(d)	358.4600	3.584600x102	7	'n' stands for nano. It is equal to 10-9
		3.5846x102	5
(e)	0.2860	2.860x102	4	'T' stands for tera. It is equal to 1012
		2.86x102	3