小升初真題-四則混合運(yùn)算380題(有答案解析)

.32/32WORD格式整理.小升初真題混合運(yùn)算專(zhuān)項(xiàng)練習(xí)〔有答案.1．〔2012?瑤海區(qū)基本計(jì)算：①428÷[32÷〔4+4]②127×8÷127×8．2．〔2012?武勝縣計(jì)算．9080﹣35×2617÷3.4+1.48÷〔﹣×〔+3÷÷÷4〔+÷+10÷[﹣〔÷+]．〔2012?武勝縣計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算．2004+75×54÷45〔0.125×8﹣0.5×432%×76.4+1.36×3.2×+÷〔﹣×〔+1110÷[56×〔﹣]4．〔2012?武勝縣計(jì)算．〔108÷25×〔75÷183.5×〔20.6﹣16.8÷4.8〔﹣×〔+×[7﹣4÷〔+]．5．〔2012?萬(wàn)州區(qū)計(jì)算：9﹣5.4=780÷26=3.14×3=27×=625﹣199=10+0.1=0÷=9.42×0.1=﹣=0.42=1÷=1﹣+=6．〔2012?桐廬縣計(jì)算．①92×13+28②4.2÷1.5﹣0.36③78×④1÷﹣÷1⑤×5÷×5⑥2﹣÷⑦36×〔+7．〔2012?天柱縣脫式計(jì)算．3060÷15﹣25×1.04×÷+〔+×〔÷5×[﹣〔﹣]．〔2012?桃源縣脫式計(jì)算．

99×87+8718.7﹣3.375﹣6.6255×〔+0.5÷2÷[〔﹣÷]．〔2012?XX計(jì)算下面各題,能簡(jiǎn)算的要簡(jiǎn)算．

①630÷18×24 ②0.7+3.9+4.3+6.1 ③16×+4×④〔7.5﹣7.5×0.6÷4 ⑤〔+÷3×⑥．10．〔2012?順昌縣脫式計(jì)算．〔能簡(jiǎn)算的要簡(jiǎn)算①14×75﹣624÷39②÷9+×③+〔﹣÷④÷[﹣〔1﹣]．11．〔2012?XX用遞等式計(jì)算〔11379+450÷18×40〔2〔3.2÷16+10.8÷22〔3×+×〔4×÷〔﹣〔2012?硚口區(qū)脫式計(jì)算．〔友情提醒：有的可以簡(jiǎn)算

800﹣608÷32×5 3.68﹣3.6×0.2+0.18 48×9.9+48×0.1〔1﹣÷0.25×4〔6﹣6×÷12．〔2012?吉水縣脫式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算．97÷1+35.6+0×6 1375+450÷15×25[4.5+〔13×+13×]÷48×+48×+48×894.47﹣〔94.47﹣86.555 3.42×76.3+76.3×5.76+9.18×23.7．〔2012?洪山區(qū)能簡(jiǎn)便的要用簡(jiǎn)便方法計(jì)算,寫(xiě)出主要過(guò)程

〔1360+240÷15×28 〔26÷2.4﹣0.3×1.4 ×6+6×〔4〔﹣0.4÷×．15．〔2012?鳳陽(yáng)縣用遞等式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算〔143×8﹣420÷15〔2+2++3〔3×÷15〔4〔+÷﹣〔53.9×9.77+0.23×3.9+〔﹣×．16．〔2011?XX計(jì)算下面各題,怎樣簡(jiǎn)便就怎樣計(jì)算．420÷216÷18×17 25×12.5×32×+÷40÷[×〔+]〔2011?游仙區(qū)用自己喜歡的方法算

〔315+285÷〔315﹣2555﹣〔÷+〔+﹣×363.3×+0.75×3.7+75%×3．〔2011?永州下面各題,怎樣簡(jiǎn)便就怎樣計(jì)算．

405×〔20﹣172÷43 ×+×17.31﹣6.15﹣3.85 ÷[×〔﹣]．〔2011?武昌區(qū)遞等式計(jì)算：360﹣225÷15×18 ÷×4.72﹣1.16﹣2.84 +÷+．〔2011?田東縣計(jì)算下列各題．

860﹣560÷8×7 〔5.9+1.65÷2.5 〔+×20÷÷[〔+×]．〔2011?瑞安市〔1360+24÷15×30〔20.25×7.2+2.8÷0.5〔3×29﹣8×〔4〔+﹣÷．〔2011?南縣下面各題,能簡(jiǎn)算的要簡(jiǎn)算．〔能簡(jiǎn)算的要寫(xiě)出主要簡(jiǎn)算過(guò)程

109×x+109×x 9.5﹣〔4.6+5.8÷1.3 23．〔2011?金堂縣用自己喜歡的方式計(jì)算下面各題〔要寫(xiě)出主要的解答過(guò)程〔13600﹣800÷40×35〔264﹣15.8﹣14.2〔3〔4〔5〔638÷[2.5×〔4.36+3.64]．24．〔2011?XX選擇合適的方法計(jì)算〔要寫(xiě)出主要的計(jì)算過(guò)程．6760÷13+17×213.33×4.5+4.5×6.67．25．〔2011?河西區(qū)脫式計(jì)算．〔能簡(jiǎn)算的要簡(jiǎn)算53×13+211.65×45+55×1.65÷[1﹣〔+]．26．〔2011?XX用你喜歡的方法計(jì)算．25×12﹣850÷170.25×99+25%6÷7﹣〔×13+4÷17．27．〔2011?海州區(qū)神機(jī)妙算：2842÷14+74×3÷〔﹣3.6×99+3.6÷〔××+÷72×〔﹣28．〔2011?豐都縣脫式計(jì)算〔384+336÷15×13〔11+30.6÷16+16.52﹣×﹣〔1﹣〔+〕÷．29．〔2010?自流井區(qū)計(jì)算,能簡(jiǎn)便的要簡(jiǎn)便〔73.6÷0.16+370×183.84÷+5.16×．30．〔2010?雨花區(qū)計(jì)算下列各題,能簡(jiǎn)便的要簡(jiǎn)便計(jì)算3618÷45+162067﹣67×〔23+19200.8×73﹣6.3×2008118÷〔14+2.5×4599﹣97+95﹣93+91﹣89+…+7﹣5+3﹣12008÷200820082009．31．〔2012?咸安區(qū)靈活計(jì)算①②③④．32．〔2012?仙游縣神機(jī)妙算：〔+×〔﹣×+÷÷〔〔﹣×3〕〔+×12=33．〔2012?萬(wàn)州區(qū)怎樣算簡(jiǎn)便就怎樣算．①520+2613÷13②×5×③〔+÷+④〔+﹣÷⑤÷62.5%+×．34．〔2012?遂昌縣用遞等式計(jì)算．①[1﹣〔+]×36②〔+×36③7.5×4.7+4.7×2.5④25.3×12﹣33.46÷0.35⑤×[÷〔1﹣]⑥+〔﹣÷．35．〔2012?XX縣遞等式計(jì)算〔能簡(jiǎn)便的要簡(jiǎn)算+÷×+÷〔156×﹣26×2012+558÷18×243.87+1.44﹣0.87+0.5635×〔1﹣÷．36．〔2012?平壩縣用遞等式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算．÷﹣×13.54﹣6.88﹣3.12〔+÷+．37．〔2012?XX13×1+86.6÷．38.〔2012?瑞安市脫式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算．÷5+÷〔+﹣×18．

39.〔2012?樂(lè)清市直接寫(xiě)得數(shù)．

﹣+0.375=9×〔0.5﹣=﹣=12×〔+=÷2÷=9﹣﹣=2÷﹣÷2=90.5×99+90.5= 0.125×0.25×32=40.〔2012?金沙縣脫式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算[25﹣〔﹣×12]÷5×+×99×1011.25×32×2.54.3×6.7+0.67×67﹣6.7．41.〔2012?建華區(qū)計(jì)算下面各題．

657+360÷45×19 21×28.6﹣〔12.6+18.4÷1.6 〔÷．42．〔2012?XX計(jì)算下面各題,怎樣簡(jiǎn)便就怎樣計(jì)算．×++﹣×﹣÷﹢÷13．43．〔2012?XX計(jì)算下面各題,怎樣簡(jiǎn)便就怎樣計(jì)算．．44.〔2012?漢陽(yáng)區(qū)選擇合適的方法計(jì)算．

2929÷29×34﹣1422÷÷〔+﹣×24﹣〔+÷45.〔2012?海港區(qū)脫式計(jì)算〔+÷+9÷[1﹣〔]

1.02÷〔5+0.4×0.2546.〔2012?XX用遞等式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算﹣+﹣=2﹣÷×=÷[56×〔﹣]

÷[1÷〔﹣]47.〔2012?XX計(jì)算下面各題,能簡(jiǎn)便的要簡(jiǎn)便．

4÷1.25÷8×〔÷+÷÷〔1﹣〔﹣〕×+×48.〔2011?沿灘區(qū)計(jì)算．8470﹣104×65； 0.6×〔5.3﹣1.7÷0.9； 5.2÷0.8×6+42；÷〔﹣×；[﹣〔﹣]÷．49.〔2011?新邵縣下面各題,怎樣算簡(jiǎn)便就怎樣算

50．〔2011?XX計(jì)算：〔1〔+÷+〔2[1﹣〔+]÷〔3×﹣×．51.〔2011?龍灣區(qū)用遞等式計(jì)算,能簡(jiǎn)便的要用簡(jiǎn)便方法計(jì)算．

÷×5÷9+×5×〔﹣÷48×〔+﹣52．〔2011?嘉禾縣用遞等式計(jì)算下面各題：〔15﹣14××21×〔53.〔2011?滑縣怎樣簡(jiǎn)便就怎樣算+×35﹣﹣0.125÷+×[﹣〔﹣]÷．54.〔2011?XX計(jì)算下列各題．〔能簡(jiǎn)算的寫(xiě)出簡(jiǎn)算過(guò)程

〔14.27×+4.73÷8+,〔2〔2.3+2.3+2.3+2.3×2.5,55．〔2011?福安市下面各題怎么簡(jiǎn)便怎么算．×〔﹣÷；78÷[32×〔1﹣+144]；×﹣×；0.32×2.5×0.125．56．〔2011?XX選擇你喜歡的方法進(jìn)行計(jì)算：×27﹣÷〔1﹣×9×4.25+4×〔6﹣3÷〔13+1157．〔2011?XX地區(qū)計(jì)算下面各題,要寫(xiě)出計(jì)算的主要過(guò)程．58.〔2011?XX計(jì)算下面各題,注意使用簡(jiǎn)便運(yùn)算．×÷÷÷〔3〔15﹣14×××+×〔5÷[〔+×]﹣﹣÷．59.〔2011?XX．60．〔2010?XX計(jì)算下面各題,能簡(jiǎn)算和要簡(jiǎn)算．〔+÷×〔+6.28+5.74+3.72+5.2661．〔2012?康縣計(jì)算．〔能簡(jiǎn)算的要簡(jiǎn)算1.9﹣1.9×〔÷×[1﹣〔﹣]48×85×÷23+×．62．〔2012?姜堰市計(jì)算下面各題,能簡(jiǎn)便計(jì)算的用簡(jiǎn)便方法計(jì)算．4.82﹣5.2÷0.8×0.6[﹣〔﹣]÷×+×12.3×9957.5﹣14.25﹣153.2×12.5×0.25．63.〔2012?豐潤(rùn)區(qū)用最喜歡的方法計(jì)算12.5×38×0.8 〔8.5﹣4×〔0.32÷1.66.5×4.6+6.5×15.4 ÷[]．64.〔2012?東城區(qū)脫式計(jì)算．

0.6+32×0.25﹣6 ÷[〔+×]．65．〔2012?城廂區(qū)計(jì)算下面各題,能簡(jiǎn)算的要簡(jiǎn)算①96×〔72﹣14.4÷3.6②〔++×12③×36+36×④[﹣〔﹣]÷．66．〔2011?溫江區(qū)計(jì)算．〔122.7﹣1.8+17.3﹣18.2〔23899+3737÷37〔3385×6÷385×6〔4〔5〔638.4×13+30.8×26．67.〔2011?滿(mǎn)洲里市計(jì)算下面各題,能簡(jiǎn)算的要簡(jiǎn)算．6.8﹣1.36﹣0.64 〔2.5×73×0.4+﹣+0.25+++32.5×1.7+32.5×9.3﹣32.5．68.〔2011?建華區(qū)計(jì)算下面各題．

13.5﹣〔6.9+6.1÷2.615×573+900÷36×15〔÷+．69.〔2011?邗江區(qū)脫式計(jì)算．〔2.8+4.6×〔2.6﹣2． 0.25×〔32+64÷0.6÷[×〔﹣]×[1﹣〔﹣]．70.〔2010?云龍縣用遞等式計(jì)算．①3.6﹣2.8+6.4﹣7.2 ②②③〔6.9﹣3.15÷0.3×0.8 ④÷〔×﹣1．④÷〔×﹣1．71.〔2010?徐聞縣計(jì)算下列各題,能簡(jiǎn)算的要簡(jiǎn)算〔×36〔25.28﹣〔2.56+0.44+1.72 〔3〔425×12.5×32 〔5﹣4.75÷〔2×2.5﹣3 〔627÷7+43×〔1﹣72.〔2010?霞浦縣怎樣算簡(jiǎn)便就怎樣算．20.3×16﹣4560÷15 2.5×0.125×326.3×．73.〔2010?雙陽(yáng)區(qū)〔140.5÷0.81﹣16×2.4÷[×〔﹣〔36.72÷1.2〔418.1﹣5.7﹣4.3+1.9〔53.8×4.2+38×0.58 〔61.25×9﹣1.25．74.〔2010?曲周縣選擇你喜歡的方法計(jì)算．3.6﹣2.8+6.4﹣7.2 6.3×+13.7÷15÷〔+××17+×2375.〔2010?蘿崗區(qū)計(jì)算．〔寫(xiě)出解答過(guò)程,能應(yīng)簡(jiǎn)便方法的要用簡(jiǎn)便方法

〔1〔0.125×8﹣0.5×4 〔2〔+÷﹣〔3907+907×9﹣900 〔49÷[+〔﹣]76．〔2010?龍灣區(qū)用遞等式計(jì)算,怎樣簡(jiǎn)便就怎樣算〔13.7﹣2.2+7.3﹣7.8〔2375+450÷18×25〔32.9×+1.1×〔4÷〔﹣77.〔2010?龍海市選擇合適的方法,計(jì)算下面各題．

18.7﹣4.375﹣6.625 920÷40﹢23×5012×〔+﹣4.4×+3.6÷1+0.75×278.〔2010?樂(lè)清市〔14.5×9.9+0.1；〔216﹣+﹣；〔31.25×2.5×3.2；〔48.1÷〔9﹣6.3×1.4；〔559+59×13+14×41．79．〔2009?XX脫式計(jì)算．30.5﹣40÷8×2.41.6×+÷2.48.5+[〔﹣0.005×700÷][2﹣〔﹣1.5÷]×．80.〔2009?XX用自己喜歡的方法計(jì)算．205﹣105×12÷45 1.05×〔3.8﹣0.8÷6.3 〔+÷〔+÷50%884÷34+17×21 3.75×〔1.2﹣+．81．〔2009?淇濱區(qū)計(jì)算：45.78+45.78×993.6﹣2.8+7.4﹣7.2×67+33×．82．〔2009?XX1÷2.5+2.5×0.4+1．83.〔2008?資中縣用遞等式計(jì)算〔能簡(jiǎn)算的請(qǐng)簡(jiǎn)算

①7.6﹣4.8+8.4﹣5.2②4×0.8×2.5×1.25 ③×+÷④1375﹣375÷15×18 ⑤1.05×〔3.8﹣0.8÷6.3 ⑥×〔〔﹣÷〕84．〔2008?武進(jìn)區(qū)用遞等式計(jì)算：①0.6﹣0.2×1.9÷7.6；②5÷﹣×；③1.02÷〔5+0.4×0.25；④÷〔+×；⑤3÷×〔﹣．85．〔2008?XX混合運(yùn)算．〔能簡(jiǎn)便的要寫(xiě)簡(jiǎn)便過(guò)程①4.5×8.8﹣2.2×4.5﹣4.5②38﹣15.4+0.125﹣4.6③④．86．〔2008?邗江區(qū)用遞等式計(jì)算,能簡(jiǎn)算的要簡(jiǎn)算〔118﹣10.4÷〔6.2﹣4.9〔2〔32﹣〔43.6÷0.4+1.3×5〔5[6.85﹣〔0.75+0.2]÷0.5〔6÷[56×〔]．87．〔2008?廣西靈活計(jì)算下面各題〔154.75﹣5.25﹣14.75 〔216.4÷〔4.3×2﹣0.4〔31.25×32 〔4×[1﹣〔﹣]88．〔2008?大足縣脫式計(jì)算〔其中④、⑤兩小題必須簡(jiǎn)算．①730﹣240÷15×16②[2.06﹣〔1.73﹣0.29]×1.5③÷[〔+×]④6.8+2.37+7.63+4.2⑤×17÷9+3÷8×．89.〔2007?浦東新區(qū)〔113.72﹣1.65﹣2.35〔22.4+3.6÷1.2×0.2〔3〔12.5+1.25×0.8〔45.4×7.2+2.8×5.4〔52÷〔1.2﹣0.4×2.5〔60.3×[〔13.4﹣10÷0.5+1.5]．90．〔2008?長(zhǎng)汀縣用遞等式計(jì)算〔能簡(jiǎn)算的要用簡(jiǎn)便方法計(jì)算．①20﹣﹣②9.07×99+9.07③+×÷2④2.3+3.91÷〔22﹣19.7=5\*GB3⑤×[﹣〔﹣]．參考答案：1．①428÷[32÷〔4+4],=428÷[32÷8],=428÷4,=107；②127×8÷127×8,=127÷127×8×8,=8×8,=642．〔19080﹣35×26,=9080﹣910,=8170；〔217÷3.4+1.48,=5+1.48,=6.48；〔3÷〔﹣×〔+,=÷×,=×〔×,=×,=；〔43÷÷÷4,=9×÷4,=12÷4,=3；〔5〔+÷+,=×,=+,=；〔610÷[﹣〔÷+],=10÷[﹣〔+],=10÷[﹣],=10÷,=813．〔12004+75×54÷45,=2004+4050÷45,=2004+90,=2094；〔2〔0.125×8﹣0.5×4,=〔1﹣0.5×4,=0.5×4,=2；〔332%×76.4+1.36×3.2,=32%×76.4+13.6×0.32=0.32×〔76.4+13.6,=0.32×90,=28.8；〔4×+÷,=+,=；〔5〔﹣×〔+,=×,=；〔61110÷[56×〔﹣],=1110÷[56×﹣56×],=1110÷[24﹣21],=1110÷3,=3704．〔1〔108÷25×〔75÷18,=×,=18；〔23.5×〔20.6﹣16.8÷4.8,=3.5×〔20.6﹣3.5,=3.5×17.1,=59.85；〔3〔﹣×〔+,=×,=；〔4×[7﹣4÷〔+],=×[7﹣4÷],=×[7﹣4×],=×[7﹣5],=×2,=．5．9﹣5.4=3.6,780÷26=30,3.14×3=9.42,27×=15,625﹣199=426,10+0.1=10.1,0÷=0,9.42×0.1=0.942,﹣=,0.42=0.16,1÷=,1﹣+=；6．①92×13+28=1196+28,=1224；②4.2÷1.5﹣0.36=2.8﹣0.36,=2.44；③78×=〔79﹣1×,=79×﹣1×,=3﹣,=2；④1÷﹣÷1=4﹣,=3；⑤×5÷×5=×5×5,=1×5×5,=25；⑥2﹣÷=2﹣,=；⑦36×〔+=36×+36×,=6+24,=30．7．〔13060÷15﹣25×1.04=204﹣26,=178；〔2×÷+=×+,=+,=；〔3〔+×〔÷5=××,=；〔4×[﹣〔﹣]．=×[+﹣],=×,=．8．〔199×87+87,=〔99+1×87,=100×87,=8700；〔218.7﹣3.375﹣6.625,=18.7﹣〔3.375+6.625,=18.7﹣10,=8.7；〔35×〔+0.5÷2,=5×÷2,=6÷2,=3；〔4÷[〔﹣÷],=÷[÷],=÷,=．9．①630÷18×24,=35×24,=840；②0.7+3.9+4.3+6.1,=〔0.7+4.3+〔6.1+3.9,=5+10,=15；③16×+4×,=〔16+4×,=20×,=8；④〔7.5﹣7.5×0.6÷4,=〔7.5﹣4.5÷4,=3÷4,=0.75；⑤〔+÷3×,=〔+××,=〔+×,=,=；⑥[〔],=×[÷〔],=×[],=[],=,=110．①14×75﹣624÷39=1050﹣16,=1034；②÷9+×=×+×,=〔+×,=×,=；③+〔﹣÷=+×,=+,=；④÷[﹣〔1﹣]．=÷[﹣],=,=．11．〔11379+450÷18×40,=1379+25×40,=1379+1000,=2379；〔2〔3.2÷16+10.8÷22,=〔0.2+10.8÷22,=11÷22,=0.5；〔3×+×,=〔+×,=1×,=；〔4×÷〔﹣,=×÷,=××12,=×12×,=3×,=．12．〔1800﹣608÷32×5,=800﹣19×5,=800﹣95,=705；〔23.68﹣3.6×0.2+0.18,=3.68﹣0.72+0.18,=2.96+0.18,=3.14；〔348×9.9+48×0.1,=48×〔9.9+0.1,=48×10,=480；〔4〔1﹣÷0.25×4,=0.25÷0.25×4,=1×4,=4；〔5〔6﹣6×÷12,=〔6﹣4÷12,=2÷12,=．13．〔197÷1+35.6+0×6=97+35.6+0,=132.6；〔21375+450÷15×25=1375+30×25,=1375﹣750,=625；〔3[4.5+〔13×+13×]÷=[4.5+〔13××2]÷,=[4.5+9.75]÷,=14.25×,=8.55；〔448×+48×+48×8=〔++8×48,=9×48,=432；〔594.47﹣〔94.47﹣86.555=94.47﹣94.47+86.555,=0+86.555,=86.555；〔63.42×76.3+76.3×5.76+9.18×23.7=〔3.42+5.76×76.3+9.18×23.7,=9.18×76.3+9.18×23.7,=〔76.3+23.7×9.18,=100×9.18,=91814．〔1360+240÷15×28,=360+16×28,=360+448,=808；〔26÷2.4﹣0.3×1.4,=2.5﹣0.42,=2.08；〔3×6+6×,=〔+×6,=1×6,=6；〔4〔﹣0.4÷×,=÷×,=×,=15．〔143×8﹣420÷15,=344﹣28,=316；〔2+2++3,=〔++〔3+2,=1+6,=7；〔3×÷15,=×,=；〔4〔+÷﹣,=×﹣,=﹣,=；〔53.9×9.77+0.23×3.9=3.9×〔9.77+0.23,=3.9×10,=39；〔6+〔﹣×,=+×,=+,=．16．〔1420÷216÷18×17,=÷18×17,=×17,=；〔225×12.5×32,=25×12.5×8×4,=〔25×4×〔12.5×8,=100×100,=10000；〔3×+÷,=×+×,=〔+×,=1×,=；〔440÷[×〔+],=40÷[×],=40÷,=8017．〔1〔315+285÷〔315﹣255,=600÷60,=10；〔25﹣〔÷+,=5﹣〔4,=5﹣4﹣,=；〔3〔+﹣×36,=×36+×36﹣×36,=9+6﹣12,=3；〔43.3×+0.75×3.7+75%×3,=〔3.3+3.7+3×0.75,=10×0.75,=7.518．①405×〔20﹣172÷43,=405×16,=6480；②×+×,=×〔+,=；③17.31﹣6.15﹣3.85,=17.31﹣〔6.15+3.85,=17.31﹣10,=7.31．④÷[×〔﹣],=÷[×],=×,=319．〔1360﹣225÷15×18,=360﹣15×18,=360﹣270,=90；〔2÷×,=×,=；〔34.72﹣1.16﹣2.84,=4.72﹣〔1.16+2.84,=4.72﹣4,=0.72；〔4+÷+,=++,=++,=1+,=1．20．860﹣560÷8×7=860﹣70×7,=860﹣490,=370；〔5.9+1.65÷2.5=7.55÷2.5,=3.02〔+×20÷=〔×20+×20,=〔15+16×,=31×,=21；÷[〔+×]．=÷[×],=,=．21．〔1360+24÷15×30,=360+×30,=360+48,=408；〔20.25×7.2+2.8÷0.5,=1.8+5.6,=7.4；〔3×29﹣8×,=×〔29﹣8,=×21,=9；〔4〔+﹣÷,=〔+﹣×24,=×24+×24﹣×24,=20+21﹣10,=41﹣10,=3122．〔1109×x+109×x,=〔109+109×x,=218x；〔29.5﹣〔4.6+5.8÷1.3,=9.5﹣10.4÷1.3,=9.5﹣0.8,=8.7；〔3,=÷+,=+,=．23．〔13600﹣800÷40×35,=3600﹣20×35,=3600﹣700,=2900；〔264﹣15.8﹣14.2,=64﹣〔15.8+14.2,=64﹣30,=34；〔3,=〔40﹣27×,=13×,=9；〔4,=×36﹣×36+×36,=15﹣6+14,=9+14,=23；〔5,=〔18﹣5+1×,=14×,=9；〔638÷[2.5×〔4.36+3.64],=38÷[2.5×8],=38÷20,=1.924．〔16760÷13+17×21,=520+357,=877；〔23.33×4.5+4.5×6.67=〔3.33+6.67×4.5,=10×4.5,=45；〔3〔+÷〔﹣=,=；〔4=12÷[×],=12÷,=48．25．〔153×13+21,=689+21,=710；〔21.65×45+55×1.65,=1.65×〔45+55,=1.65×100,=165；〔3÷[1﹣〔+],=÷[1﹣],=,=．26．〔125×12﹣850÷17,=300﹣50,=250；〔20.25×99+25%,=0.25×〔99+1,=0.25×100,=25；〔36÷7﹣,=﹣,=；〔4〔×13+4÷17,=×13+×13+4÷17,=++,=+〔+,=+1,=2．27．〔12842÷14+74×3=2848÷7÷2+74×3,=203+222,=425；〔2÷〔﹣=×12,=10；〔33.6×99+3.6=〔99+1×3.6,=100×3.6,=360；〔4÷〔×=×,=；〔5×+÷=×+×,=〔+×,=1×,=；〔672×〔﹣=72×﹣72×,=40﹣30,=1028．〔1〔384+336÷15×13,=720÷15×13,=48×13,=624；〔2〔11+30.6÷16+16.5,=41.6÷16+16.5,=2.6+16.5,=19.1；〔32﹣×﹣,=2﹣﹣,=2﹣〔+,=2﹣1,=2；〔4[1﹣〔+]÷,=[1﹣]÷,=÷,=．29．〔1〔73.6÷0.16+370×18,=〔460+370×18,=830×18,=14940；〔23.84÷+5.16×,=3.84×+5.16×,=〔3.84+5.16×,=9×,=12；〔3,=7.35﹣﹣0.35﹣,=〔7.35﹣0.35﹣〔+,=7﹣,=6；〔42.5×〔+++,=2.5×〔×4,=〔2.5×4×,=10×,=．30．〔13618÷45+1620,=80.4+1620,=1700.4；〔267﹣67×〔23+19,=67×〔1﹣23﹣19,=67×〔﹣41,=﹣2747；〔3200.8×73﹣6.3×2008,=2008×7.3﹣6.3×2008,=〔7.3﹣6.3×2008,=1×2008,=2008；〔4118÷〔14+2.5×45,=118÷〔14+112.5,=118÷126.5,=；〔599﹣97+95﹣93+91﹣89+…+7﹣5+3﹣1,=2+2+…2+2,=2×25,=50．〔62008÷200820082009=；31．〔1,=﹣+,=〔+,=1﹣,=；〔275﹣25×,=75×﹣25×,=〔75﹣25×,=50×,=30；〔3,=×14+×14﹣,=5+〔14﹣1×,=5+13×,=5+4,=9；〔4,=÷+,=+,=32.〔1〔+×〔﹣,=×,=；〔2×+÷,=×+×,=×〔+,=×1,=；〔3÷[〔﹣×3],=÷[×3],=÷,=；〔4〔+×12,=×12+×12,=4+9,=1333．①520+2613÷13,=520+201,=721；②×5×,=××5,=×5,=；③〔+÷+,=+,=+,=1；④〔+﹣÷,=〔+﹣×42,=×42+×42﹣×42,=28+24﹣7,=52﹣7,=45；⑤÷62.5%+×,=×+×,=〔+×,=1×,=34．①[1﹣〔+]×36,=[1﹣〔+]×36,=[1﹣]×36,=×36,=；②〔+×36,=36×,=8+21,=29；③7.5×4.7+4.7×2.5,=4.7×〔7.5+2.5,=4.7×10,=47；④25.3×12﹣33.46÷0.35,=303.6﹣95.6,=208；⑤×[÷〔1﹣],=×[÷],=[],=×5,=4；⑥+〔﹣÷,=+〔﹣×2,=+×2,=+,=．35．〔1+÷,=+,=；〔2×+÷,=×+×,=×〔+,=×1,=；〔3〔156×﹣26×,=〔48﹣26×,=22×,=16；〔42012+558÷18×24,=2012+31×24,=2012+744,=2756；〔53.87+1.44﹣0.87+0.56,=〔3.67﹣0.87+〔1.44+0.56,=3﹣2,=1；〔635×〔1﹣÷,=35×÷,=20,=4836．〔1÷﹣×,=4﹣,=3；〔213.54﹣6.88﹣3.12,=13.54﹣〔6.88+3.12,=13.54﹣10,=3.54；〔3〔+÷+,=,=,=237．13×1+86.6÷=13.4×+86.6×,=〔13.4+86.6×1.25,=100×1.25,=12538．〔1÷5+,=〔×,=,=；〔2÷,=[],=,=；〔3〔+﹣×18,=×18+×18﹣×18,=9+6﹣3,=15﹣3,=1239.﹣+0.375=,9×〔0.5﹣=1.5,﹣=,12×〔+=5,÷2÷=,9﹣﹣=82÷﹣÷2=2,90.5×99+90.5=90500.125×0.25×32=1．40．〔1[25﹣〔﹣×12]÷5,=[25﹣×12]÷5,=〔25﹣3÷5=22,=4；〔2×+×,=×+×,=〔+×,=1×,=；〔399×101,=99×〔100+1,=99×100+99×1,=9900+99,=9999；〔41.25×32×2.5,=1.25×〔4×8×2.5,=〔1.25×8×〔2.5×4,=10×10,=100；〔54.3×6.7+0.67×67﹣6.7,=4.3×6.7+6.7×6.7﹣6.7,=〔4.3+6.7﹣1×6.7,=10×6.7,=6741．〔1657+360÷45×19,=657+8×19,=657+152,=809；〔221×,=21×××,=〔21××〔×,=8×,=；〔328.6﹣〔12.6+18.4÷1.6,=28.6﹣31÷1.6,=28.6﹣19.375,=9.225；〔4〔÷,=÷,=2+,=2．42．〔1×++,=++,=++,=2+,=2；〔2﹣×﹣,=﹣﹣,=﹣〔+,=﹣1,=；〔3÷﹢÷13,=×+×,=〔+×,=1×,=43．〔1,=35×,=20×,=48；〔2,=〔48﹣26×,=22×,=16；〔3,=×+×,=×〔+,=×1,=44．〔12929÷29×34﹣1422,=101×34﹣1422,=3434﹣1422,=2012；〔2÷÷,=〔,=,=2；〔3〔+﹣×24,=×24+×24﹣×24,=2+6﹣8,=8﹣8,=0；〔4﹣〔+÷,=,=,=45．〔1〔+÷+,=,=,=；〔29÷[1﹣〔],=9÷[1﹣],=9÷,=27；〔31.02÷〔5+0.4×0.25,=1.02÷〔5+0.1,=1.02÷5.1,=0.246．〔1﹣+﹣,=+﹣〔+,=﹣1,=；〔22﹣÷×,=2﹣××,=2﹣,=；〔3÷[56×〔﹣],=÷[56×﹣56×],=÷[24﹣21],=÷3,=×,=；〔4÷[1÷〔﹣],=÷[1÷],=÷,=×,=；47．〔14÷1.25÷8,=4÷〔1.25×8,=4÷10,=0.4；〔2×〔÷,=×,=；〔3+÷,=+,=2；〔4÷[1﹣〔﹣],=÷[1﹣],=÷,=；〔5×+×,=×〔+,=×1,=48．〔18470﹣104×65,=8470﹣〔100+4×65,=8470﹣100×65﹣4×65,=8470﹣6500﹣260,=1710；〔20.6×〔5.3﹣1.7÷0.9,=0.6×3.6÷0.9,=0.6×〔3.6÷0.9,=0.6×4,=2.4；〔35.2÷0.8×6+42,=39+42,=81；〔4÷〔﹣×,=÷×,=××,=；〔5[﹣〔﹣]÷,=[﹣]÷,=×,=．49．〔12﹣÷﹣,=2﹣﹣,=2﹣〔+,=2﹣1,=1；〔2×﹣÷,=×﹣×,=〔﹣×,=×,=；〔34÷﹣÷4,=5﹣,=4；〔4÷[〔﹣×],=÷[×],=÷,=50．〔1〔+÷+=×+,=,=2；〔2[1﹣〔+]÷=[1﹣]×,=×,=；〔3×﹣×=,=．51．〔1÷×5,=×5,=；〔2÷9+×,=×+×,=×〔+,=×1,=；〔35×〔﹣÷,=5×÷,=×,=；〔448×〔+﹣,=48×+48×﹣48×,=16+12﹣24,=28﹣24,=452．〔110÷+×4,=10×+×4,=18+,=18；〔2×+×,=×〔+,=×1,=；〔3〔15﹣14××,=〔15﹣8×,=7×,=；〔421×〔,=21××21,=3+14,=1753．〔1+×3,=+,=；〔25﹣﹣0.125,=5﹣〔0.875+0.125,=5﹣1,=4；〔3÷+×,=×+×,=〔+×,=1×,=；〔4[﹣〔﹣]÷,=[﹣]÷,=÷,=54．〔14.27×+4.73÷8+,=4.27×+4.73×+,=〔4.27+4.73+1×,=10×,=；〔2〔2.3+2.3+2.3+2.3×2.5,=2.3×4×2.5,=2.3×〔4×2.5,=2.3×10,=2355．〔1×〔﹣÷=××2,=；〔278÷[32×〔1﹣+144]=78÷[32×+144],=78÷[12+144],=78÷156,=0.5；〔3×﹣×=〔﹣×,=×,=；〔40.32×2.5×0.125=0.4×0.8×2.5×0.125,=〔0.4×2.5×〔0.8×0.125,=1×0.1,=0.156．〔1×27﹣=〔27﹣1×,=26×,=18；〔2÷〔1﹣×=÷×,=；〔39×4.25+4×=9×4.25+4.25×,=〔9+×4.25,=10×4.25,=42.5；〔4〔6﹣3÷〔13+11=÷,=57．〔1〔1﹣×70÷,=〔1﹣×,=×,=；〔2÷[×〔+],=÷[×],=÷,=×,=58.〔1×÷,=××,=；〔2÷÷,=××,=；〔3〔15﹣14××,=〔15﹣8×,=7×,=；〔4×+×,=〔+×,=1×,=；〔5÷[〔+×],=÷[×],=÷,=×,=3；〔6﹣﹣÷,=﹣﹣×,=﹣﹣,=﹣〔+,=﹣1,=59．2.7×﹣0.35=9﹣2=660．〔1〔+÷,=×,=；〔2×〔+,=×,=；〔36.28+5.74+3.72+5.26,=〔6.28+3.72+〔5.74+5.26,=10+11,=21；61．〔11.9﹣1.9×〔,=1.9﹣1.9×0,=1.9﹣0,=1.9；〔2[1﹣〔﹣]÷,=[1﹣]÷,=÷,=1；〔3×[1﹣〔﹣],=×[1﹣],=×,=；〔448×=48×+48×﹣48×,=12+8﹣4,=16；〔585×,=〔86﹣1×,=86×﹣=85﹣=84；〔6÷23+×=×+×,=〔+×=1×,=．62．〔14.82﹣5.2÷0.8×0.6,=4.82﹣6.5×0.6,=4.82﹣3.9,=0.92；〔2[﹣〔﹣]÷,=[﹣]÷,=÷,=；〔3×+×,=〔+×,=1×,=；〔412.3×99,=12.3×〔100﹣1,=12.3×100﹣12.3×1,=1230﹣12.3,=1217.7；〔557.5﹣14.25﹣15,=57.5﹣〔14.25+15,=57.5﹣30,=27.5；〔63.2×12.5×0.25,=8×0.4×12.5×0.25,=〔8×12.5×〔0.4×0.25,=100×0.1,=1063．〔112.5×38×0.8,=〔12.5×0.8×38,=10×38,=380；〔2〔8.5﹣4×〔0.32÷1.6,=4.5×0.2,=0.9；〔36.5×4.6+6.5×15.4,=6.5×〔4.6+15.4,=6.5×20,=130；〔4÷[÷〔1﹣],=÷[÷],=÷[×],=÷,=×,=64．〔10.6+32×0.25﹣6,=0.6+8﹣6,=2.6；〔2÷[〔+×],=÷[×],=÷,=5．65．①96×〔72﹣14.4÷3.6,=96×57.6÷3.6,=1536；②〔++×12,=×12+×12+×12,=6+4+3,=13；③×36+36×,=〔+×36,=1×36,=36；④[﹣〔﹣]÷,=[﹣]÷,=×,=．66．〔122.7﹣1.8+17.3﹣18.2,=〔22.7+17.3﹣〔1.8+18.2,=40﹣20,=20；〔23899+3737÷37,=3899+101,=4000；〔3385×6÷385×6,=〔385÷385×〔6×6,=1×36,=36；〔4,=+×,=+,=；〔5,=8×4×1.25×,=〔8×1.25×〔4×,=10×1,=10；〔638.4×13+30.8×26,=38.4×13+61.6×13,=〔38.4+61.6×13,=100×13,=130067．①6.8﹣1.36﹣0.64=6.8﹣〔1.36+0.64,=6.8﹣2,=4.8；②〔2.5×73×0.4,=2.5×0.4×73,=1×73,=73；③,=〔+〔,=；④0.25+++,=〔0.25+0.75+〔,=1+1,=2；⑤32.5×1.7+32.5×9.3﹣32.5,=32.5×〔1.7+9.3﹣1,=32.5×10,=32568．〔113.5﹣〔6.9+6.1÷2.6,=13.5﹣13÷2.6,=13.5﹣5,=8.5；〔215×,=3××,=2×,=；〔3573+900÷36×15,=573+25×15,=573+375,=948；〔4〔÷+,=×+,=+,=69．①〔2.8+4.6×〔2.6﹣2,=7.4×0.6,=4.44；②0.25×〔32+64÷0.6,=0.25×96÷0.6,=0.25×4×24÷0.6,=24÷0.6,=40；③÷[×〔﹣],=÷[×〔],=÷,=,=2；④×[1﹣〔﹣],=×[1﹣〔],=×[1﹣],=×,=．70．①3.6﹣2.8+6.4﹣7.2,=〔3.6+6.4﹣〔2.8+7.2,=10﹣10,=0；②,=7.2×[8÷0.4],=7.2×20,=144；③〔6.9﹣3.15÷0.3×0.8,=3.75÷0.3×0.8,=12.5×0.8,=10；④÷〔×﹣1,=÷﹣1,=﹣,=71．〔1〔×36,=×36+×36+×36,=12+6+4,=22；〔25.28﹣〔2.56+0.44+1.72,=5.28+1.72﹣3,=7﹣3,=4；〔3,=〔×,=1×,=；〔425×12.5×32,=24×4×12.5×8,=100×100,=10000；〔5〔5﹣4.75÷〔2×2.5﹣3,=0.25÷2,=0.125,〔627÷7+43×〔1﹣,=,=,=1072．①20.3×16﹣4560÷15,=324.8﹣304,=20.8；②2.5×0.125×32,=〔2.5×4×〔0.125×8,=10×1,=10；③6.3×+6.3÷,=6.3×+6.3×,=6.3×〔,=6.3；④[〔×],=÷[〔×],=[],=×,=173．〔140.5÷0.81﹣16×2.4=50﹣38.4,=11.6；〔2÷[×〔﹣=[×]=,=10；〔36.72÷1.2=6.72÷6÷0.2,=1.12÷0.2,=5.6；〔418.1﹣5.7﹣4.3+1.9=〔18.1+1.9﹣〔5.7+4.3,=20﹣10,=10；〔53.8×4.2+38×0.58=3.8×4.2+3.8×5.8,=〔4.2+5.8×3.8,=10×3.8,=38．〔61.25×9﹣1.25=〔9﹣1×1.25,=8×1.25,=1074．〔13.6﹣2.8+6.4﹣7.2,=〔3.6+6.4﹣〔2.8+7.2,=10﹣10,=0；〔26.3×+13.7÷15,=6.3×+13.7×,=〔6.3+13.7×,=20×,=；〔3÷〔+×,=÷×,=××,=；〔4×17+×23,=×14+×23,=×〔14+23,=×37,=1775．〔1〔0.125×8﹣0.5×4,=0.125×8×4﹣0.5×4,=4﹣2,=2；〔2〔+÷﹣,=÷﹣,=﹣,=；〔3907+907×9﹣900,=907×〔1+9﹣900,=907×10﹣900,=9070﹣900,=8170；〔49÷[+〔﹣],=9÷[+],=9÷,=876．〔13.7﹣2.2+7.3﹣7.8,=〔3.7+7.3﹣〔2.2+7.8,=11﹣10,=1；〔2375+450÷18×25=375+25×25=375+625=1000；〔32.9×+1.1×,=〔2.9+1.1×,=4×,=；〔4÷〔﹣,=÷,=1．77．〔118.7﹣4.375﹣6.625,=18.7﹣〔4.375+6.625,=18.7﹣11,=7.7；〔2920÷40﹢23×50,=23+23×50,=23+1150,=1173；〔312×〔+﹣,=12×+12×﹣12×,=3+2﹣4,=1；〔44.4×+3.6÷1+0.75×2,=4.4×+3.6×+×2,=×〔4.4+3.6+2,=×10,=78．〔14.5×9.9+0.1,=4.5×〔10﹣0.1+0.1,=4.5×10﹣4.5×0.1+0.1,=45﹣0.45+0.1,=44.55+0.1,=44.65；〔216﹣+﹣,=16﹣〔,=16﹣1,=15；〔31.25×2.5×3.2,=〔1.25×8×〔2.5×0.4,=10×1,=10；〔48.1÷〔9﹣6.3×1.4,=8.1÷〔9﹣8.82,=8.1÷0.18,=45；〔559+59×13+14×41,=59×〔13+1+14×41,=59×14+14×41,=〔59+41×14,=100×14,=140079．〔130.5﹣40÷8×2.4,=30.5﹣12,=18.5；〔21.6×+÷2.4,=1.6×+÷,=1.2+×,=1.2+0.5,=1.7；〔38.5+[〔﹣0.005×700÷],=8.5+[〔﹣3.5×],=8.5+[〔﹣×],=8.5+[×﹣×],=8.5+[﹣],=8.5+,=8.5+0.5,=9；〔4[2﹣〔﹣1.5÷]×,=[2﹣〔﹣×]×,=[2﹣×]×,=[2﹣]×,=×,=12．80．①205﹣105×12÷45,=205﹣105×