100以内不退位减法 96-10=47-40= 22-20= 98-40= 88-50=82-40= 94-80= 76-50= 62-50= 43-20=95-70= 74-30= 31-10=84-70= 82-10=86-60= 59-10=80-40=69-40= 95-90=76-40= 50-20=43-40= 77-20= 51-20=66-60= 91-10=100-30=54-50= 80-70=87-80= 51-20=77-70= 63-60= 71-40=54-30= 98-80= 27-20= 76-40= 91-80=87-80= 34-10=28-10=88-40= 43-10=23-20= 89-20= 85-40= 68-60= 45-20=100-90=83-60= 82-10=70-20=32-30=94-50= 43-10=82-60= 97-70= 89-10=第 1 页,共 10 页 100以内不退位减法 73-40= 70-40=74-50= 23-20=33-10=33-30= 43-20=41-20=36-20=86-70=63-60= 93-20=41-30=51-20=20-10=53-10=24-10=55-40= 41-20=89-60=72-70=19-10=59-10=87-50= 70-10=82-50=94-50= 99-60= 95-50= 91-60=97-20=87-30= 80-20=65-10=61-30=85-40= 95-10=90-70=85-40= 63-40=66-30= 49-40= 86-40= 67-30= 58-10=94-60= 39-10=81-20=97-80= 86-50=47-10=60-20=89-70= 70-60=56-40=88-50= 86-20=52-50=8