Monday, April 19, 2010

Week One - Tuesday 20th April

Welcome to the class Shannon.

Today we looked at rounding using decimal places (dp) or significant figures (sf). The rules for both are the same:
  1. Count how many sf or dp you want to keep.
  2. Circle the next number.
  3. If this number is 0,1,2,3 or 4 then drop the circled number and everything to the right. (Stay the same). If this number is 5,6,7,8 or 9 then round the number before up by one, and then drop. (Round up)
  4. For sf you may need to add zeros because the rounded number should be close to the original number.
Homework: 6.02 and 6.03

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