Every purchase made with the Citi Rewards+ Mastercard credit card rounds up to the nearest 10 ThankYou Points. This means if cardholders spend $4 they earn 10 ThankYou Points instead of 4. The no-annual-fee card also gives cardholders 10% of their points back for the first 100,000 ThankYou Points redeemed per year. Cardholders earn 2 ThankYou Points per $1 spent at supermarkets and gas stations (on up to $6,000 in purchases per year) and 1 ThankYou Point per $1 spent on all other purchases. Other features of the card include 15,000 ThankYou Points after spending $1,000 in purchases withi...