【Limited Time Offer】 This set of 4-color addition and subtraction cards helps you learn the basics of arithmetic. - Type: Flashcards - Colors: Red, Blue, Yellow, Green - Contents: Addition, Subtraction - Quantity: 4 sets ① Addition... Sum is a single digit, 45 cards ② Subtraction... Sum is a single digit, 45 cards ③ Addition... Sum is a double digit, 36 cards ④ Subtraction... Sum is a double digit, 36 cards Ideal for: - Replacing lost cards at school - Early learning In our home, we had two sets. One set stayed at school, and the other was used for homework and home study. ⚠︎ All cards have names written on them. This is a limited-time offer, as the cards will be discarded if there is no demand. Cards will be provided as is. ⚠︎ Cards show signs of use. Photos show everything included. Please refrain from purchasing if you are overly concerned about condition, as this is a personal inspection. These are intended for those looking for a supplementary set. Thank you for your understanding.