8.24 rounded to 1 decimal place is 8.2

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Presentation transcript:

8.24 rounded to 1 decimal place is 8.2 To round 8.24 to 1 decimal place… ... decide which two decimals it lies between .. 8.24 8.2 8.3 ... 8.24 is nearer to 8.2. 8.24 because the 4 is less than 5 (half way) we round down (the first decimal place is in blue (2) use the next digit to decide how to round) 8.24 rounded to 1 decimal place is 8.2

4.1 4.2 4.15 4.15 4.15 rounded to 1 decimal place is 4.2 To round 4.15 to 1 decimal place… ... decide which two decimals it lies between .. 4.15 4.1 4.2 ... 4.15 is half way. If it’s half way we always round up. 4.15 because it’s 5 we round up. 4.15 rounded to 1 decimal place is 4.2

7.63 16.79 7.63 rounded to 1 decimal place is 7.6 To round 7.63 to 1 decimal place 7.63 3 is less than 5 (half way) so round down 7.63 rounded to 1 decimal place is 7.6 To round 16.79 to 1 decimal place 16.79 9 is greater than 5 (half way) so round up 16.79 rounded to 1 decimal place is 16.8

2.781 0.816 2.781 rounded to 2 decimal places is 2.78 The 2nd decimal place is in blue – this is the number that changes To round 2.781 to 2 decimal places 2.781 1 is less than 5 (half way) so round down 2.781 rounded to 2 decimal places is 2.78 To round 0.816 to 2 decimal place 0.816 6 is greater than 5 (half way) so round up 0.816 rounded to 2 decimal places is 0.82