Verified Answer :

To answer this we just need to multiply. 

3.85 × 2 =  7.70

Another way to do this is add 3.85. 
  1 1      (carried 1's)
  3.85
+3.85
----------
  7.7 0

So, 3.85 × 2 = 7.70

Hope I helped ya!!

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