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Previous Next Addition Tables Booklet: 1 Enlarge Read more Article number: 559521 Where to buy this product? Print page Description The ‘traditional’ addition tables for the numbers 1–9 with second addend in numerical order, i.e. table of 1: 1+1= through 1+9= (40 booklets). Specifications Brand Nienhuis Montessori Minimum age 3 years, 5 years