100以内两位数不退位减法（2023-07-28）

100以内两位数不退位减法（2023-07-28）：46-45= 68-47= 43-32= 98-46= 92-22= 69-66= 58-11= 43-30= 65-11= 92-20= 57-34= 77-66= 98-93= 34-13= 87-12= 13-10= 56-14= 54-20= 79-60= 18-15= 99-22= 95-33= 59-28= 98-44= 29-28= 50-30= 25-15= 46-41= 88-54= 59-51= 58-32= 69-62= 34-11= 79-58= 54-43= 75-70= 86-60= 69-22= 48-35= 98-67= 82-72= 89-75= 69-67= 75-25= 87-56= 96-52= 71-61= 93-63= 97-27= 88-31= 74-71= 64-10= 76-65= 97-92= 49...