Dimensions: 25.1cm x 15.9cm x 1.2cm - Learn essential maths skills the easy way!This clever book is packed with fun activities to help you practise your addition and subtraction. Write your answers, lift the flaps to check you got them right, then wipe clean and repeat again and again! - Perfect for ages 5 and up and practising Key Stage 1 maths - Wipe-clean pen included - A reusable format that provides endless learning fun! - Great for home learning