Totally free mathmatics resources from MathSphere
You can find a lot of free resources on the MathSphere website.
Ultimately, they would like you to purchase the full version of Maths Worksheets: It's All Figured Out for £59.99. With over 5000 worksheets, it definitely represents good value, but you might simply find the free resources really useful.
They are conveniently organised by year group - from Year 1 to Year 6.
The Year 1 resources section has...
24 worksheets on Number Sequences
14 worksheets on Adding and Subtracting Tens
19 worsheets on Problem Solving
There are a similar number of worsheets for the other year groups covering topics from Problem Solving with Money to Roman Numerals.
There is also a really good free 58-page Maths Dictionary for you to download and print.
This website is definitely worth looking at.
