1. 1 Press Ctrl-A ©G Dear 2010 – Not to be sold/Free to use Rounding Off Stage 6 - Year 11 Mathematics

2. 2 Rounding Off To round off decimals we use the  5/4 rounding. Example 1: Round 3.1418 to 3 decimal places. Look at the 4 th decimal place. therefore we round it up to 3.142. Example 2: Round 2.452 to 2 decimal places. Look at the 3 rd decimal place. therefore we round it down to 2.45. Is it 5 or greater? It is, It is not,

3. 3 Rounding Off Exercises Round to the number of decimal places between the [ ] signs. a)12.512[2]12.51 b)3.4428[3]3.443 c)27.252[1]27.3 d)0.0901[2]0.09 e)2.999[1]3.0 f)4.951[0]5 g)51.1124[3]51.112 Answer