WE ARE PROUD TO OFFER ALL OUR CUSTOMERS A 24 HOUR 'NO QUIBBLE GUARANTEE'. THIS ALLOWS YOU TO GET A FULL REFUND IF YOU ARE NOT COMPLETELY SATISFIED WITH YOUR PURCHASE. You are downloading this truly amazing 13-20 times tables race challenge worksheet. Print it off and give it to learners as a starter or get it laminated and reuse on a regular basis. The times table worksheet allows learners to practice their 13 to 20 times tables skills.