Mathematics
Grade5
Easy

Question

Convert 40 fraction numerator 1 over denominator 4 end fraction mg into grams.

  1. 0.04025    
  2. 0.4025    
  3. 40.50    
  4. 0.0405    

The correct answer is: 0.04025


    We know,
    1000mg = 1g Or 1mg = fraction numerator 1 over denominator 1000 end fractiong
    Then, 40 fraction numerator 1 over denominator 4 end fraction mg = fraction numerator 40 over denominator 1000 end fraction + fraction numerator fraction numerator 1 over denominator 4 end fraction over denominator 1000 end fraction
    = 0.040 + 0.00025
    = 0.04025
    1 mm= fraction numerator 1 over denominator 1000 end fraction m = 2000 mm = 2000 ÷ 1000 = 2m

    One g is equal to 1000 mg. therefore, (4 x 40 +1)/4 mg = 161/4 mg= 161/4  x 1/1000 g = 0.4025 g

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