Adding and Subtracting Activity Book Adding and Subtracting Activity Book Brain Boosters Penny Worms ; Illus. Graham Rich Arcturus2019Paperback96pp Illustrated197x168mm 9781789502428 Product Code: 513862 Details Aiming to help children become fluent in the fundamentals of mathematics, each workbook in the engaging Brain Boosters series comprises interac... DetailsBackDetailsAiming to help children become fluent in the fundamentals of mathematics, each workbook in the engaging Brain Boosters series comprises interactive puzzles and brainteasers to teach numeracy and logic skills and practice questions to test the learning. Age 6+See MoreSee Less publ £5.99now £3.50 Qty Qty123 Add to Basket CategoriesChildren'sEducationTagsEarly learning picture booksEducational material