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1、一年级数学下册口算分类练习题第二单元整十数加减整十数、整十数加减一位数及相应的减法50+20= 30+40= 80-20= 60-50= 80-10= 50-30=20+70= 30+50= 80-70= 40+50= 90-90= 40+60=60+30= 40-40= 90-70= 30+30= 10+50= 70-40=60-60= 100-40= 30+4= 34-4= 50+5= 55-5=86-6= 4+90= 9+20= 76-6= 50+7= 57-7=33-3= 8+20= 99-9= 40+7= 77-7= 54-4=60+2= 38-8= 7+90= 97-7=第四单元（
2、一）两位数加减一位数（不进位、不退位），两位数加减整十数51+3= 5+41= 5+33= 71+6= 35+4= 51+4=8+41= 7+32= 6+33= 3+44= 5+42= 5+64=3+24= 45+3= 81+5= 6+42= 51+7= 42+5=49-7= 26-2= 58-20= 63+10= 69-7= 66+3=87+10= 23+6= 43+5= 32+30= 56+20= 30+47=10+63= 84-3= 59-5= 4+74= 74-2= 25+50=66+30= 57-20= 88-80= 85-50= 67-3= 41+50=4+54= 53+40= 5
3、+30= 72+6 45+3 38-699-80= 47-6= 30+69= 67-50= 46+20= 7+81=51+7= 95-50= 30+25= 26+3= 14+40= 7+52=（二）两位数加一位数（进位）62+8= 35+5= 79+7= 86+6= 59+7= 75+5=46+8= 89+7= 28+5= 78+8= 29+6= 39+9=7+55= 6+88= 9+75= 9+46= 5+69= 4+47=8+88= 3+68= 897= 365= 429= 538=725= 638= 939= 374= 827= 13+9=9+12= 0+41= 67+0= 55+7=
4、38+5= 5+79=5+46= 7+54= 49+9= 79+2= 2+88= 8+26=6+56= 78+5= 8+17= 17+4= 6+66= 32+9=4+39= 77+3= 49+4= 6+68= 9+48= 2+49=9+56= 3+18= 89+2= 5+86= 72+9= 73+7=53+9= 66+5= 6+85= 4+17= 34+7= 58+6=6+57= 8+19= 89+1= 5+78= 55+7= 27+4=22+8= 17+4= 97+3= 6+54= 69+4= 5+77=8+82= 8+73= 74+6= 56+7= 7+46= 79+5=6+34= 46+
5、7= 39+1= 9+31= 26+5= 67+8=76+6= 7+66= 9+53= 34+8= 49+2=（三）两位数减一位数（退位）48-9 47-8 52-4 43-8 68-9 40-227-9 32-4 41-2 38-9 50-8 63-937-8 88-9 75-9 92-3 42-7 71-647-8 26-7 52-3 63-5 80-2 36-965-8 45-9 86-8 24-9 40-2 46-943-4 75-6= 41-6= 94-9= 96-7= 27-9=87-8= 30-6= 35-9= 64-6= 72-9= 31-7=71-2= 88-9= 54-7=
6、 50-7= 20-5= 42-7=63-5= 24-5= 82-9= 61-8= 43-9= 53-5=80-6= 22-9= 33-4= 95-7= 70-5= 72-5=23-7= 32-8= 42-8= 46-9= 71-8= 51-2=53-9= 31-5= 61-6= 21-7= 51-8= 62-4=84-8= 44-6= 81-8= 63-8= 51-7= 30-3=56-9= 83-8= 63-6= 31-9= 83-6= 90-7=92-8= 80-4= 53-8= 32-9= 60-5= 52-8=64-9= 36-8= 54-5= 74-5= 42-6=第六单元（一）笔
7、算两位数加两位数（不进位）的口算与笔算21+45= 75+11= 61+38= 21+64= 43+36= 51+25=12+61= 63+23= 72+13= 23+74= 13+53= 41+44=34+41= 31+67= 87+12= 31+67= 73+14= 32+53=42+12= 64+21= 61+17= 15+72= 55+11= 31+24=43+27= 87+11= 33+54= 44+51= 51+41= 33+32=27+51= 11+81= 13+43= 42+43= 16+52= 31+44=15+83= 31+52= 68+21= 52+15= 11+63=
8、44+51=43+24= 61+14= 44+23= 21+52= 54+21= 22+33=23+44= 27+32= 65+31= 14+41= 53+25= 11+81=37+62= 36+64= 35+31= 25+52= 32+45= 46+11=28+41= 34+23= 31+65= 73+26= 21+42= 13+55=25+43= 13+62= 75+24= 13+53= 41+44= 51+26=（二）笔算两位数减两位数（不退位）的口算与笔算67-36= 88-25= 99-87= 67-66= 97-75= 75-32=67-36= 88-25= 99-87= 39-3
9、4= 67-11= 86-54=98-55= 63-32= 75-25= 99-43= 24-14= 29-16=29-15= 81-31= 77-71= 87-73= 24-22= 78-43=36-25= 89-79= 26-13= 88-15= 25-24= 89-56=77-65= 69-16= 99-16= 49-44= 91-51= 59-38=79-17= 73-61= 58-35= 99-34= 87-46= 53-21=91-61= 86-74= 35-12= 44-22= 92-91= 75-43=39-11= 78-35= 89-28= 49-42= 93-72= 65-65=33-31= 69-17= 59-48= 97-43= 79-35= 77-21=24-23= 79-58= 56-44= 59-38= 59-19= 37-25=98-26= 97-55= 69-25= 54-32= 79-73= 97-74=67-53= 88-75= 47-11= 88-88= 94-24= 88-15=37-25= 79-34= 96-54= 49-28= 38-37= 57-57=
