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Addition and subtraction, Size of each puzzle: 140 x 120mm Set of 20 Suitable for ages 3+, Reinforce basic addition and subtraction skills with these beautifully made wooden puzzles, hand cut in the UK. The set includes 20 puzzles (10 addition and 10 subtraction), with 3 pieces each, that illustrate a simple calculation in both pictures and numbers. Complete the puzzle to solve the sum. Size of each puzzle: 140 x 120mm. Suitable for ages 3+.
