100以内两位数退位减法（2023-07-12）

100以内两位数退位减法（2023-07-12）：62-46= 80-59= 95-38= 81-78= 70-23= 72-17= 41-19= 62-23= 51-33= 92-46= 72-59= 31-25= 86-19= 91-27= 26-18= 60-29= 84-25= 42-37= 76-48= 87-38= 95-56= 54-46= 53-27= 80-36= 51-35= 65-59= 70-67= 53-29= 93-88= 56-17= 45-27= 80-13= 42-14= 85-46= 74-56= 20-12= 95-17= 91-29= 95-58= 93-39= 80-38= 72-36= 30-25= 65-36= 76-27= 84-45= 72-38= 97-78= 43-35= 42-16= 90-28= 45-29= 70-44= 97-29= 70...