Here is a good maths blog that has a lot of free maths worksheets for Reception and Year 1 to 6. They are arranged in years, based on the UK curriculum i.e Year 1 is for children aged 5/6.
The links below will take you to the Maths blog site.
Reception Maths Worksheets (4 to 5 years old)
Year 1 Maths Worksheets (5 to 6 years old)
Year 2 Maths Worksheets (6 to 7 years old)
Year 3 Maths Worksheets (7 to 8 years old)
Year 4 Maths Worksheets (8 to 9 years old)
Year 5 Maths Worksheets (9 to 10 years old)
Year 6 Maths Worksheets (10 to 11 years old)
Wassalamu’alaikum