Welcome to the Math Salamanders Rounding Significant Figures collection.
Here you will find a selection of free printable rounding Worksheets,
which will help your child learn to round numbers to either 1, 2 or 3 significant figures.
Rounding to ... significant figures means that you are only interested in the first ... digits that make up a number.
You might need to round a number to the nearest 10, 100, 1000, etc., or you might need to round it to 1, 2 or even 3 decimal places.
Often when you are dealing with numbers in the real world, you do not need to know the exact answer but simply an approximation.
Rounding to 1 significant figure will give you a rough approximation of what the answer is.
Rounding to 2 significant figures will give you a reasonable approximation of your answer and it is usually enough for most quantities where you do not have to be exact.
Rounding to 3 significant figures will give you a very close approximation of your answer and it is usually the most precise that you will need to be for everyday working out.
Want to test yourself to see how well you have understood this concept?.
Quicklinks to ...
Rounding to significant figures is different from rounding to decimal places.
The first significant figure is the first non-zero digit a number has.
The second significant figure is the digit after the 1st significant figure.
The third significant figure is the digit after the 2nd significant figure, and so on.
See below for help to round a number to a set number of significant figures.
When you are rounding a number to 1 significant figures, you are trying to reduce the number to a single digit and zeros (and possibly a decimal point) to indicate its place value.
How to round a number to 1 significant figure
Look at the 2nd significant digit that the number has.
In a decimal, the first significant digit is the first non-zero digit. The 2nd significant digit is the digit after the first.
Examples
When you are rounding a number to 2 significant figures, you are trying to reduce the number to a two digits and zeros (and possibly a decimal point) to indicate its place value.
How to round a number to 2 significant figures
Look at the 3rd significant digit that the number has.
This is the digit which is two digits after the most significant digit.
Examples
When you are rounding a number to 3 significant figures, you are trying to reduce the number to a 3 digits and zeros (and possibly a decimal point) to indicate its place value.
How to round a number to 3 significant figures
Look at the 4th significant digit that the number has.
Examples
Here you will find a range of free printable rounding worksheets to help your child learn to round numbers to either 1,2 or 3 significant figures.
These sheets are carefully graded so that the easier sheets come first and give extra support.
Each sheet comes with a separate printable answer sheet.
Using these sheets will help your child to:
All the free Rounding Worksheets in this section support the Elementary Math Benchmarks.
The rounding numbers worksheets in this section involve rounding numbers to the nearest 10.
They are at a more basic level than those on this page.
Take a look at some more of our worksheets similar to these.
In our Rounding Practice zone, you can practice rounding a range of numbers. You can round numbers to the nearest 10, 100 or even 1000. Want to round numbers to the nearest decimal place, you can do that too!
Select the numbers you want to practice with, and print out your results when you have finished.
You can also use the practice zone for benchmarking your performance, or using it with a group of children to gauge progress.
Here is our generator for generating your own rounding off numbers worksheets.
Our generator will create the following worksheets:
Here is our rounding challenges collection which will give your child an opportunity to apply their rounding learning.
The challenges can be tackled individually or with a partner.
Each challenge involves using rounding knowledge and properties of numbers to work out the correct answer.
Using these sheets will help your child to:
All the rounding challenges support elementary math benchmarks.
On this webpage, you will find a larger selection of our rounding decimals challenges.
The challenges involve rounding numbers to the nearest 1, 0.1 or 0.01.
Each challenge involves using rounding knowledge and properties of numbers to work out the correct answer.
Using these sheets will help your child to:
All the rounding challenges support elementary math benchmarks.
Here you will find a range of Free Printable 4th Grade Decimal Place Value Worksheets.
The following worksheets involve using and understanding decimal notation - tenths and hundredths.
Using these sheets will help your child to:
All the Free 4th Grade Math Worksheets in this section are informed by the Elementary Math Benchmarks for 4th Grade.
Our quizzes have been created using Google Forms.
At the end of the quiz, you will get the chance to see your results by clicking 'See Score'.
This will take you to a new webpage where your results will be shown. You can print a copy of your results from this page, either as a pdf or as a paper copy.
For incorrect responses, we have added some helpful learning points to explain which answer was correct and why.
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This quiz tests your knowledge and ability to round off numbers to 1, 2 or 3 significant figures.
Fun Quiz Facts
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How to Print or Save these sheets
Need help with printing or saving?
Follow these 3 easy steps to get your worksheets printed out perfectly!
The Math Salamanders hope you enjoy using these free printable Math worksheets and all our other Math games and resources.
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