Addition Squares up to 10, 20 50 & 100 - (almost) Unlimited Worksheets

With Addition Squares up to 10, 20 50 & 100 with (almost) Unlimited Worksheets, your students can practice addition at 4 different levels throughout the whole year. You will never run out of worksheets
On every worksheet there are four 5 by 5 grids. You can make a mix (or have them all set to the same range of numbers) from the following:
- Addition up to 10
- Addition up to 20
- Addition up to 50
- Addition up to 100

Why will you never run out of worksheets ?
At the click of a button all the numbers in each square are randomized so you have an (almost) endless set of worksheets that could be used for classwork, homework, revision, end of lesson activity, etc. It is also a straightforward activity to leave for a replacement teacher that needs little explanation. 

These pages are ideal If you want to set individualized work for each student or for small groups within the class.

Are Answers provided ?
Yes. These can be found on the second page of every worksheet,  and are automatically generated every time you create a new worksheet.

Want the whole class to practice together ?
The  self checking Interactive Teaching Resource can be used on an Interactive Whiteboard 

Note
These resources are PDF documents and work with the official  Adobe Acrobat Reader on Windows or Mac computers, with the randomizing buttons also working via a touchscreen or on an Interactive Whiteboard.