-1.口算。481=777=698=193=350-80=135=7200=124=416=48+7=125= 1783= 278+534=3095= 678= 2.用竖式计算3.画图1.口算。802= 963=5607=363= 888=4207= 3006= 09=855= 724=6933=986=2464=7197=7503=2.用竖式计算3.画图1.口算。325= 2804= 7208=8000= 5008=0+76= 7009 84-56=2408=906=6809=1013547=7097=8756=29406=2.用竖式计算3.画图1.口算。8004= 2804=6003=682= 786=655= 3006=095=987= 524=6093=验算806=487529=5408=验算8638=2.用竖式计算3.画图1.口算。612= 684= 6003=800230= 8900=06= 137 84-26=2408=569=894=1187=8655=9086=4509=2.用竖式计算3.画图1.口算。613= 884= 5002=6000= 7800=045= 147 86-27=2208=568=27007=5794=验算2787=794=1687=2.用竖式计算3.画图1.口算。804= 2204=6303=282= 966=755= 3106=0365=982= 484=1894=987=8675=9096=4809=2.用竖式计算3.画图1.口算。233=0+35=546=352=88+6=370=606=7000=12070=57+6=2686=9877=1488499=9507=验算4858=2.用竖式计算3.画图1.口算。324=5624=807=812=95+8=8002= 4804=9003=662= 726=1894=987=8675=9096=4809=2.用竖式计算3.画图1小格表示1厘米1.口算。615= 884= 3003=2000= 3500=069= 117 84-29=2478=568=9506=9087=8734127=7855=27008=2.用竖式计算3.画图1.口算。855= 3007=0195=917= 564=+ =+ =- =1- =5896=9767=1477499=9708=验算4727=2.用竖式计算3.画图1.口算。484=6006=253=156=202=42080=80+120=323=75+25=163=4264= 3844= 4805= 269= 700-432=2.用竖式计算3.画图1.口算。602=52+4=130=402=6002=560=143=2020=1204=362=8530=6835= 4163= 2604=8742=2.用竖式计算1.口算。376=569=760+100=750+125=27=30+540=620-57=115=67-53=262=9806=7097=8934197=7856=9867=2.用竖式计算1.口算。4828 707 68024404 65006408 1200700 6202 933 870 1487499=9608=4823=验算8455=7086=2.用竖式计算1.口算。8008300668002424220880803796030544003004609=9803=7047=8936197=4609=2.用竖式计算1.口算。9500 5314 15009001230 7729 423 214 3357 4040 8070 7855=6013=7757=693=9933=2.用竖式计算1.口算。777=102-90=4008=224=76-25=85-53=3000+500=5007=332=600-400=844=9939=3050=2600=232=2.用竖式计算1.口算。255=1000+200=704=422=5100-100=862=184=602=223=44-29=2732=98008=6700=6003=462=2.用竖式计算1.口算。73+13=2340=240=806=2500-500=637=364=243=8006=78+17=4509=1003= 2214=8422=888=2.用竖式计算1.口算。+ =+ =- =- =- =2506=455=183=905= 844= 5005=7085=4106=1225= 484= 2.用竖式计算1.口算。7004=1217=9019=3052= 500= 137=1004=7024=41-20= 968= 2504=3233=138=3502=1407=2.用竖式计算1.口算。1736=1165=243=555= 3026=4152=1147=808=707=204=1794=8413=7035=847= 1054= 2.用竖式计算1.口算。1307=2016=2603=2204= 1045= 72+8=363=2263=903= 693= 8007=1893=1337=3702= 6553= 2.用竖式计算. z.