二年级数学上100以内加减法竖式计算笔算练习题
二年级上册100以内加减混合笔算竖式计算练习题240道
二年级上册100以内加减混合笔算竖式计算练习题240道There seems to be a string of math XXX。
there are several formatting errors and some paragraphs that do not make sense。
Here is a revised n:78-35+13=5689-45+27=7178-69+56=6525+56-67=1489-34+17=7286-69+49=66XXX97-46+38=8996-67+32=6186-67+31=5098-59+23=6288-35+13=6646+34-25=5536+24-15=45 28+65-67=26 78-69+66=75 23+58-66=15 23+58-56=25 96-87+22=31 35-27+54=62 XXX38+45-67=16 96-77+52=71 99-75+22=46 45-26+49=68 100-66+33=67 78-75+13=16 28+66-77=17 79-65+38=52 77-69+56=64 69-62+45=52 89-64+28=53 36+35+25=9698-58+23=63 78-49+61=90 56+24-35=45 23+58-56=25 78-62+45=61 XXX86-69+49=66 XXX23+58-66=15 97-46+38=89 96-77+52=71 28+65-67=26 25+56-67=14 23+54-60=17 86-67+31=50 99-75+22=46 87-26+35=96 45-26+64=83 78-69+63=72 89-64+28=53100-66-33=1 36+24-15=45 96-67+32=61 XXX96-87+22=31 99-65+32=66 46+34+25=105 79-65+18=32 88-35-13=40 77-29+32=80 98-59+23=62 59+24-25=58 99-45-27=27 28+66-77=17 35-27+54=62 78-75+13=16 100-68-32=0 87-34-27=26 87-62+45=70This article seems to be a list of math XXX deleted as theydid not make sense.这是一篇数学题，需要计算一些简单的加减法。