100以内两位数不退位减法（2023-10-26）

100以内两位数不退位减法（2023-10-26）：77-22= 96-80= 92-91= 69-46= 93-41= 83-72= 19-17= 73-11= 98-51= 77-65= 95-13= 62-21= 79-19= 21-11= 77-25= 67-53= 96-32= 69-48= 48-45= 66-34= 89-30= 24-21= 57-13= 51-30= 26-15= 47-42= 89-55= 53-50= 58-32= 35-12= 55-44= 76-71= 28-10= 87-61= 49-36= 99-67= 98-26= 58-34= 82-30= 35-14= 87-13= 14-11= 94-40= 57-15= 59-10= 55-21= 79-61= 19-16= 96-34= 97-50= 99-44= 28-12= 24-23= 62-42= 37...