Answers

2015-12-11T02:42:47+05:30
When you estimate,
you round the decimal up.3.9 rounds up to 4 ,5.3 rounds up to 5.4 times 5 equals 20.The actual answer is 20.67
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2015-12-11T07:24:33+05:30
By estimation, 3.9 turns into 4 and 5.3 turns into 5. The answer after estimation is 20 while the real answer is 20.67. Well u see by estimation we get an answer of two places right. So, real answer should also have two places.Place the decimal point after it.
1 5 1