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Mathematics 8 Online
OpenStudy (anonymous):

Estimate 51% of 162. Use mental math to calculate 51% of 162.

OpenStudy (ghazi):

\[\frac{ 51}{ 100 }*162\]

OpenStudy (anonymous):

work out what half would be in this case 81 10% of 162 is 16.2 so 1% is 1.62 add 1.6 or round it up to 2 then add to 81 full answer would be 82.62 (which is possible in head as ive just shown) estimate would be between 81 and 83

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