三年级口算练8424=4824=69023=习（一）0291=54029=49＋33=26+9=93023=9029=70027=57-38=39023=13X3=23X3=1500-700=0＋22=600X7=78-36=42X2 二83-57=120X3=11X4=99F3 二29＋68=48022=230X3=77027=68-49=3923=310X3=66023=80X7=56028=39023=96023=80024=99023=230X3=18029=33023=3X200=11X4=65＋15=3X23=62022=82-55=66026=6422=66022=310X3=800X2=58＋26=64028=72029=5025=34X2=88024=4700-700=3X800=55025=7500-500=60023=42027=800X8=0291=48＋28=3X220=42022=12X4=64028=48024=6323=3X31=48028=58＋33=16024=0X57=7X50=420-20=800＋700=120X4=80028=9323=69023=0X97=88028=88024=58-0=36029=9X500=1200-200=2X440=44X2=80＋17=11X7=4822=96023=54＋28=80-46=48022=32X2=三年级口算练0251=60X5=2X440=习（三）0276=2X44=46022=42X3=0X85=84024=70＋500=1700-800=7027=三年级口算练3X33=9023=14X2=习（二）28024=18023=5X900=44024=9X400=30025=2X200=32X3=3X330=93023=80024=150-90=40X50=22X3=60-15=1800-800=30X21=60X90=90023=6323=7X11=39X10=45029=26＋57=50X70=21X2=36026=80028=24X2=44X20=37＋56=33＋57=30X70=12X4=32X3 二600X3=10X74=22X30=70X7 二37＋8=50X10=22X4=1200-700=48028=70X11=30X80=30026=63023=30X40=33X10=50X7=62-33=24X20=50X90=0X37=500＋500=12X20=12X40=53-14=33X2=30X21=220X3=17＋27=80022=20X70=22X40=84024=70028=28X1=90X40=2X14=0247=20X13=200X3=14022=56027=1X36=41X20=66026=44024=10X19=三年级口算练7X800=9323=11X50=习（五）7X700=24X2=30X30=21X30=84022=0254=28X10=10X46=430X2=三年级口算练20X50=3X700=54029=习（四）10X36=33X30=31X3=23X3=30X33=20X41=13X3=12X30=21X40=6X600=34＋56=7X80=12X10=24X20=9623=48X10=31X2=50X30=2X330=40X40=14X20=0X45=50X6=40X10=6X90=50X70=68022=23X30=20X33=800X7=62022=60X50=90X20=6026=6X800=70X80=20X13=10X89=96023=10X68=31X20=69X10=13X30 二6X500=21X40=0243=23X30 二8X70=80X40=31X30=4X90=42X20=10X37=21X30=60X60=400＋300=20X50=43X2=60X40=5X900=2000＋300=0X20=90X30=10X33=88022=75＋18=21X40=22X0=70X20=23＋48=30X20=80X70=40024=90X30=40X90=200X4=0X66=30X12=2X31=0^20=50X30=三年级口算练33X20=6X60=64028=习（七）40X70=22X40=88024=46＋24=48＋19=44＋20=400＋300=0273=70X6=三年级口算练34＋39=42X20=4X900=习（六）36026=10025=2...
