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Addition Number Locks

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  • Free UK Delivery when you spend £75.00
£49.95 (ex. VAT)
£59.94 (inc. VAT) (inc. VAT)
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Unlock addition and subtraction facts to 20 with these 2 sets of innovative self-correcting locks and keys. Choose a key and solve one of the 2 equations printed on it (front and back) then find the lock with the answer. If it is correct the key will turn and the lock will open. Each set includes 20 locks and 39 keys. Size: locks 8cm.

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