What expression gives the best estimate of 45 percent of 76?

Answer 1

34.2

Answer 2

If you are any good at arithmetic, it is easy to get an exact answer shown below. The written process is much longer than the calculations required: each line represents one only calculation: the intermediate stages are to better explain the process.

• 45% of 76 = (45/100)*76 = (45*2/100)*(76/2) = 90% of 38.
  
• 10% of 38 is 3.8
• So 90% of 38 is 38 - 3.8 = 34.2

Answer 3

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