Post on 05-Jan-2016
description
Key words for Key words for rounding and rounding and
estimatingestimating
Key words for Key words for rounding and rounding and
estimatingestimating
Unit 1.6Unit 1.6
Sample Problem
197 – 50 = 147
Rounding
To write a number to a given amount of accuracy. Rounding 197 to the nearest 100 would be 200
197 – 50 = 147
200
Estimate To give a rough answer that may be
a little less or a little more than the actual result. To estimate 197 – 50 you may instead work out 200 – 50 to give an estimate of 150.
197 – 50 = 147
200 - 50= 150