"Math Salamanders Free Math Sheets"
Welcome to our Number Fill in Puzzles Page.
Here you will find our range of printable fill in puzzles which are a fun way to enjoy learning math whilst developing your logical thinking and reasoning skills.
How to Print or Save these sheets
Need further help? Use our How to Print Support Page
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!
Using puzzles is a great way to learn Math facts and develop
mental calculation and thinking skills in a fun and easy way.
Most children are much more engaged and motivated solving puzzles than working out pages of traditional math facts.
Using these math puzzles below will help your child to develop their Math fact skills as well as their strategic thinking and reasoning.
There are different versions of each puzzle from 1st to 5th grade, so it is easy to find an easier or harder version of the same puzzle.
Each puzzle comes complete with answers.
Number Fill in Puzzles
These are all the same format and all work in the same way.
Each 'crossword' type grid contains spaces for numbers - each number that goes in the grid is written below.
The challenge is to use the existing numbers as clues to find out the correct positions of the remaining numbers.
Using these sheets will help your child to:
How the Number Fill-in Puzzles work...
In the example above, a 6 digit number has been written down, and there are spaces for two 3 digit numbers and two 4 digit numbers.
If we look at the first 3 digit number going down, we know that it has to have a number 4 in the middle. However both the 3 digit numbers in the example (246 and 549) have a 4 in the middle, so we do not yet know which number it is.
If we look at the other 3 digit number going down, we find out that it has to start with a 5. There is only one 3 digit number which has this property, which is 549. So we end up with ...
If we now go back to the first 3 digit number, we know that it cannot be 549, therefore it must be 246. So we get ...
Now let us look at the 4 digit numbers. There is a 4 digit number going across which we know nothing about, and there is also a 4 digit number going down that has a zero as the second digit. There is only one 4 digit number which has this property which is 4021. This gives us ...
There is only one remaining number to fill in, and only one number left to go which fits! The finished puzzle is ...
Number Puzzles to Fill In
The number fill in puzzles get gradually harder from puzzle 1 to puzzle 8. They start at roughly a 3rd grade level, though this is only a guide.
Looking for more printable puzzles?
Take a look at some more of our printable puzzles from 1st through to 5th grade! We have a wide range of puzzles for you to try.
Here is our collection of free math riddles from 1st grade to 5th grade.
You will find a range of number riddles which will help your child to develop their place value skills, as well as developing their problem solving and reasoning.
The riddles are also useful for developing understanding of mathematical language.
The Math Salamanders hope you enjoy using these free printable Math worksheets and all our other Math games and resources.
We welcome any comments about our site or worksheets on the Facebook comments box at the bottom of every page.
Check out our LATEST webpages.
Take a look at all our latest worksheets!
Have a look at some of our most popular pages to see different Math activities and ideas you could use with your child
Find out how the Math Salamanders all started...
And how you too could earn a living working from home!
If you are a regular user of our site and appreciate what we do, please consider making a small donation to help us with our costs.
Get a free sample copy of our Math Salamanders Dice Games book with each donation!
Looking for some cool math certificates to hand out?
A certificate is a great way to praise achievement in math learning.
Check out our printable math certificate collection!
Looking for some advice on Math Tutor Software?
Have a look at our top tips for getting hold of some decent math software.