Abacus Maths Pearson

Google Preview Y7

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https://books.google.co.uk/books?id=XENxGj2fM3UC&printsec=frontcover&dq=abacus+maths+textbooks&hl=en&sa=X&ved=0ahUKEwihkdOm4OHeAhXHJsAKHaNJCNwQ6AEIPTAF#v=onepage&q&f=false

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https://books.google.co.uk/books?id=NwJeQRXA-CIC&printsec=frontcover&dq=abacus+maths+textbooks&hl=en&sa=X&ved=0ahUKEwihkdOm4OHeAhXHJsAKHaNJCNwQ6AEIUTAJ#v=onepage&q&f=false