Primary School 'KS1 (Key Stage 1) Maths - Counting Practice - Ages 5-7' eBook is a broad based introduction to counting, addition and subtraction and problem solving involving addition and subtraction. It provides a great basis for children aged 5-7 to develop their fluency and proficiency in counting, preparing them well for KS2 (key stage 2).
Just remember: 'The more you practice, the better you'll be at maths!' - John Kelliher.