a)
$5,31 * 10 = 53,1$
$0,23 * 10 = 2,3$
$4,3 * 10 = 43$
$0,1 * 10 = 1$
$0,02 * 10 = 0,2$
б)
$5,431 * 100 = 543,1$
$30,45 * 100 = 3045$
$0,009 * 100 = 0,9$
$0,24 * 100 = 24$
$0,1 * 100 = 10$
$0,02 * 100 = 2$
в)
$78,71 * 1000 = 78710$
$5,4 * 1000 = 5400$
$0,00039 * 1000 = 0,39$
$0,009 * 10000 = 90$
$0,203 * 10000 = 2030$
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