Practise the method.Example 1Round 6.612 to one decimal place.Show worked answerAnswer: 6.6Inspect the hundredths digit, 1. Keep the tenths digit.Example 2Round 6.523 to two decimal places.Show worked answerAnswer: 6.52Inspect the thousandths digit, 3. Keep the hundredths digit.Example 3Estimate 4.4×6.2 by rounding each factor to the nearest whole number first.Show worked answerAnswer: 24The rounded factors are 4 and 6; their product is 24.