100以内两位数不退位减法（2023-10-08）

100以内两位数不退位减法（2023-10-08）：67-51= 35-11= 76-25= 97-77= 72-62= 99-96= 38-12= 87-24= 75-34= 92-32= 98-87= 63-11= 54-40= 56-34= 58-56= 64-14= 76-45= 85-41= 79-68= 89-80= 87-61= 93-31= 97-60= 57-25= 96-41= 21-20= 99-40= 85-15= 98-65= 69-61= 86-83= 78-41= 76-22= 92-41= 41-21= 37-32= 83-10= 79-21= 67-64= 35-22= 84-53= 49-26= 73-21= 87-76= 18-13= 45-23= 97-22= 47-44= 65-34= 74-30= 49-39= 89-60= 99-71= 89-10= 93...