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Question

Subtract:
25 hectometre - 12 decimetre 


  1. Metric System
  2. 13 decametre

  3. 249.88 decametre  

  4. 238 decimetre


Solution

The correct options are
A Metric System
C

249.88 decametre  


We know that 1 hectometre = 100 m
So, 25 hectometer = 25 x 100 m = 2500 m
Also, 10 decimetre = 1 m
so, 1 decimetre = 110 m
12 decimetre = 1210 m = 1.2 m

 25 hectometre - 12 decimetre = (2500 - 1.2) m = 2498.8 m

Also, 10 m = 1 decametre
1 m = 110 decametre
2498.8 m = 2498.810 decametre = 249.88 decametre  

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