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What you need to know
What you need to know:
Truncating is what happens a decimal is made shorter by the process of rounding. You should know that when a number is rounded or truncated, some amount of information is lost. For example, if you’re told that some number x rounded to the nearest whole number is 5, you don’t know whether the actual value was 4.7 or 5.2. You are required to understand that there’s a range of numbers that could round to 5 (or any other number, of course), and that these are known as the error bounds or error intervals. In this example, anything that was greater than or equal to 4.5 would’ve been rounded up to 5, and anything that was less than 5.5 would’ve been rounded down to 5. This error due to rounding is expressed as:
4.5 \leq x < 5.5
Bounds and Truncation Revision and Worksheets
The Maths Made Easy bounds revision questions and online tests make an excellent resource for teachers and tutors to use. If you are a GCSE Maths Tutor in York to London, you are welcome to use these resources as homework’s and setting progress tests as long as you don’t republish them or distribute them in any other way. You can also get more tutoring work by becoming a Maths Made Easy Maths tutor.
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