What is Rounding? To simplify a number to make a numeric problem easier to solve, we use the concept of rounding-off. It can simplify a complex number as it allows adjusting the digits. The answers to numeric problems where students use rounding off are estimated answers and are not precise. It is an acceptable technique in situations where precision is not required. It is important to have a clear understanding of place values before one can learn to round off. Both these concepts can really ease out rough calculations. There are several rules that you need to follow when rounding of a number; Rule 1: - When the digit on the unit's place is less than 5, the number is to be rounded down. Rule 2: - When the digit on the unit's place is greater than or equal to 5, the number is to be rounded up. After you decide the last digit, you want to keep and if the digit next to it is less than five, you have to leave it as it is. The practice is known as rounding down. In case the digit is five or greater than 5, you add one to the number and this practice is known as rounding up. There are hundreds of new worksheets coming available for this skill in the coming weeks.
- Approximating Values - We learn how near exact a value needs to be to pass as acceptable.
- Estimate Differences - You guessed it, round and then subtract the values.
- Estimate Sums - Just the inverse of the last topic in this worksheet section.
- Estimating Sums and Differences with Fractions - We include slightly more difficulty numeric form to work with here.
- Math Operations with Rounding - These lead to pretty accurate understandings of the values that are present.
- Place Value: Understanding How to Round Decimals - We are always looking to the right of the place value to make our decisions.
- Rounding Decimals - It is all about being able to determine the exact integer we need to evaluate.
- Rounding Fractions - These often cause students difficulty when they first see them.
- Rounding Integers Based on Place Value - We work with a real mix of values here.
- Rounding Large Numbers - As the title indicates, the values on these worksheets are rather big.
- Rounding Numbers By Place Value - We should have a good notion of what place value is before we start this section.
- Rounding Up and Down - Five or more and it goes up. Four or less and it goes down.
- Rounding To The Nearest Tens or Hundreds (In Words) - Note that all the values that we are to evaluate are written in words and not numeric form.
- Significant Figures - The problem itself indicates how accurate our answer needs to be expressed.