100以内加法减法（进退位）口算练习题19+18= 34+29= 59+16=37+25= 48+19= 53-48=70-6= 45+27= 88+56=49+29= 55-27= 63+18=56-17= 20-9= 66-38=21-9= 8+24= 18-18=15+6= 35+37= 51-3=64+18= 42-7= 34+9=45+43= 58-36= 54-7=26+16= 62+19= 48+8=52-7= 54+19= 87-29=73-36= 45-39= 64+17=34-26= 87-39= 90-67=85+15= 67+23= 52-43=78-18= 52-43= 74-58=100-36= 55+18= 83-46=92-48= 84-35= 67+15=36+28= 56-39= 34-18=57-38= 58-36= 34+70=100-56= 95-26= 82-54=36+39= 52-38= 35-19=