二年级下册数学口算综合练习题(23页可直接打印)23页.doc

244=7+63=94=366=97=568=28+6=75=36+4=305=639=648=38+16=455=71=25+23=12+35=27+71=46+33=408=21+15=36+22=59+18=72+24=41-29=44-9=72+16=43+32=35-8=567=82=7+56=567=126=42=21-7=73=88=324=80-9=( )6=30427=35-6=287=( )8=48213=64=182=637=96=99=46+10=65+40=819=55-20=9+46=93=99=58+32=80-28=33+60=546=408=( )4=2061-13=155=93=42-15=189=180-60=72-40=47+8=14+85=61+27=170+20=59=77=73+16=60+30