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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.

See Delivery & Returns page for further information.

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