100以内两位数退位减法（2023-09-11）

100以内两位数退位减法（2023-09-11）：92-68= 80-15= 71-19= 91-26= 90-51= 42-39= 60-29= 90-76= 87-38= 83-49= 71-68= 76-27= 94-65= 57-18= 46-28= 83-74= 70-67= 75-49= 62-25= 93-88= 56-17= 90-53= 26-18= 81-57= 31-26= 85-46= 73-15= 42-16= 94-17= 90-28= 64-19= 60-55= 62-23= 51-33= 93-46= 32-26= 86-19= 50-14= 91-27= 80-61= 84-25= 42-37= 76-48= 82-33= 51-35= 84-27= 53-29= 46-27= 80-14= 74-56= 21-12= 95-17= 91-29= 92-45= 73...