Which of the following card games revolves around numbers and basic math?

Uno revolves around numbers and basic math because the objective of the game is to get rid of all the cards in your hand by matching either the number, color, or action on the top card of the discard pile. Players must strategically play cards by either matching the number or adding/subtracting it to continue the flow of the game. Therefore, Uno not only tests players' number recognition skills but also requires them to perform basic mathematical calculations.