Question

efetuar as seguintes operaçoes, exprimindo os resultado respectivamente em km e cm:             a) 21,32hm+309dm+0,15.2km+432,52m+1.235dam                                                                 b)(48,392km-832dam)+[3,568km-(8,01hm-223m)]

Answer 1

    Km     Hm     Dam    M     Dm     Cm     Mm

a) 21,32hm+309dm+0,15.2km+432,52m+1.235dam       =   14,9901km                                                        
21,32hm a km =   2,132km           
309dm a km = 0,0309km              
0,152km a km = 0,152km  
432,52m a km = 0,43252  
1.235dam a km =12,35km 

21,32hm a cm = 213200
309dm a cm = 3090
0,15.2km a cm = 15200
432,52m a cm =  43252
1.235dam a cm = 1235000
 
213200 +3090 + 15200 + 43252 + 1235000 = 12.624.742cm
 

b)(48,392km-832dam)+[3,568km-(8,01hm-223m)]

48,392km a km= 48,392 
832dam a km= 8,32
3,568km a km= 3,568
8,01hm a km= 0,801
223m a km= 0,223 

(48,392 - 8,32) + [3,568 - (0,801 - 0,223)] = 40,072+3,568-0,578==> 43,062km

48,392km a cm= 4839200
832dam a cm=832000
3,568km a cm=356800
8,01hm a cm=80100
223m a cm=22300

(4839200-832000)+[356800-(80100-22300)]
(4007200)+[356800-57800]
4007200 + 299000
     4306200cm