回收廢電池匯報(bào)人：1知網(wǎng)有一年冬天，日本平家市郊區(qū)出現(xiàn)了十六、七個(gè)奇怪的病人。他們雙手顫抖，雙腳僵硬，一會(huì)兒哭，一會(huì)兒笑。后來，其中有兩位病重死亡。經(jīng)解剖，病因是重金屬類物質(zhì)引起的中毒。研究人員發(fā)現(xiàn)，這些病人居住地的三口飲水井受到嚴(yán)重污染，他們還在附近挖出三百多節(jié)廢電池。廢電池中含有金屬和廢棄的液體，這些物質(zhì)會(huì)對(duì)土壤、對(duì)水、對(duì)人的健康產(chǎn)生直接影響。一顆紐扣大小的電池可以污染60萬升水，這些水相當(dāng)于一個(gè)人一生的飲用量。你知道嗎?一顆紐扣大小的廢電池污染的水相當(dāng)于一個(gè)人一生的飲水量。一班和二班共回收多少節(jié)?估一估112＋77=11080＋=190(節(jié))大約有190節(jié)。撥一撥算一算一班和二班共回收多少節(jié)?答：一班和二班共回收189節(jié)。相同數(shù)位要對(duì)齊從個(gè)位算起試一試用豎式計(jì)算估一估估一估估一估哪一位相加滿十，就向前一位進(jìn)一。試一試用豎式算一算估一估大約有240節(jié)。答：二班和三班共回收226節(jié)。用豎式計(jì)算加法時(shí)要注意什么？練一練練一練2、植樹（1）圖中有哪些數(shù)學(xué)信息，和同伴說一說。（2）估一估，林場(chǎng)今年植樹總數(shù)夠800棵嗎？（3）林場(chǎng)今年共植樹多少棵？（4）林場(chǎng)兩年一共植樹多少棵？練一練練一練24＋38＝

56＋14＝

32＋49＝

300＋80＝

720＋80＝450＋200＝

600＋700＝

760＋90＝

800＋900＝

7×4＋50＝

72÷8＋96＝

63＋7×6＝二、筆算下面各題462＋459＝

587＋246＝

347＋308＝

487＋519＝

486＋167＝

360＋542＝465＋389＝

366＋439＝

279＋458＝

754＋255＝

329＋239＝

303＋398＝

208＋489＝1）比560多198的數(shù)是多少？

2）845比一個(gè)數(shù)少45，這個(gè)數(shù)是多少？

3）一個(gè)數(shù)比72多278，這個(gè)數(shù)是多少？

4）比420多190的數(shù)是多少？

（1）養(yǎng)雞場(chǎng)賣出雞蛋560千克，還剩下224千克．原來有雞蛋多少千克？

（2）水果店賣出梨756千克，賣出的橘子比梨多127千克，賣出橘子多少千克？

（3）紡織廠有女職工337人，有男職工146人．全廠共有職工多少人？1．黃河全長5464千米，長江比黃河長836千米．長江長多少千米？

2．李明家在學(xué)校南面480米，王英家在學(xué)校北面，比李明家到學(xué)校遠(yuǎn)256米,王英家離學(xué)校有多少米？李明家到王英家要走多少米？

用豎式計(jì)算加法1、相同數(shù)位要對(duì)齊，從個(gè)位算起；2、哪一位相加滿十，就向前一位進(jìn)一。回收廢電池匯報(bào)人：1知網(wǎng)40頁簡(jiǎn)約商務(wù)可視化圖表集BatteryChartInfographicsSaturniscomposedofhydrogenandheliumandit’stheringedoneVenushasabeautifulnameandisthesecondplanetfromtheSunMarsisactuallyacoldplace.ThisplanetisfullofironoxidedustMercuryistheclosestplanettotheSunandthesmallestone03020104BatteryChartInfographicsIt’sthesmallestplanetintheSolarSystemVenushasaverypoisonousatmosphereJupiteristhebiggestplanetintheSolarSystemIt’scomposedmostlyofhydrogenandheliumNeptuneistheeighthandfarthestplanetfromtheSunMarsisacoldplace.It’sfullofironoxidedustMercuryVenusJupiterSaturnNeptuneMarsBatteryChartInfographicsMercuryVenusVenushasabeautifulnameandisthesecondplanetfromtheSun.It’shotandhasaverypoisonousatmosphereMercuryistheclosestplanettotheSunandthesmallestoneintheSolarSystem—it’sonlyabitlargerthantheMoon60%30%JupiterisagasgiantandalsothebiggestplanetintheSolarSystemIt’stheclosestplanettotheSunandthesmallestoneintheSolarSystemSaturnisagasgiant,composedmostlyofhydrogenandheliumVenushasabeautifulnameandisthesecondplanetfromtheSunDespitebeingred,MarsisactuallyacoldplacefullofironoxidedustBatteryChartInfographicsBatteryChartInfographicsMercuryistheclosestplanettotheSunandsmallestoneintheSolarSystemJupiterisagasgiantandactuallyalsothebiggestplanetintheSolarSystemSaturnisagasgiantintheSolarSystem,composedmostlyofhydrogenandheliumIthasabeautifulnameandisthesecondplanetfromtheSunintheSolarSystem12341243CBatteryChartInfographicsABCVenus,thesecondplanetfromtheSun,hasabeautifulname,butalsoextremelyhightemperaturesandapoisonousatmosphereDespitebeingred,Marsisactuallyacoldplace.Itisfullofironoxidedust,givingtheplanetitscharacteristicreddishcastMercuryistheclosestplanettotheSunandthesmallestoneintheSolarSystem.ItwasnamedaftertheRomanmessengergodBatteryChartInfographicsAAAAACADespitebeingred,Marsisactuallyacoldplace.It’sfullofironoxidedustSaturnisagasgiant,composedmostlyofhydrogenandheliumVenushasabeautifulnameandisthesecondplanetfromtheSunJupiterisagasgiantandthebiggestplanetintheSolarSystemBatteryChartInfographicsMercuryisthesmallestplanetintheSolarSystemNeptuneisthefourth-largestintheSolarSystemDespitebeingred,MarsisactuallyacoldplaceSaturniscomposedofhydrogenandheliumIthasabeautifulnameandisthesecondplanetJupiteristhebiggestplanetintheSolarSystemMercuryNeptuneMarsSaturnVenusJupiter100%85%70%55%40%25%BatteryChartInfographicsMercuryVenusJupiterIt’sthesmallestplanetintheSolarSystemVenushasaverypoisonousatmosphereIt’sthebiggestplanetintheSolarSystemSaturnNeptuneMarsIt’scomposedmostlyofhydrogenandheliumIt’sthefarthestplanetfromtheSunIt’sacoldplace.It’sfullofironoxidedustBatteryChartInfographicsDespitebeingred,MarsisacoldplaceVenushasaverypoisonousatmosphereJupiteristhebiggestplanetofthemallSaturnisthebiggestplanetofthemallNeptuneisthefarthestplanetfromtheSun12345MarsVenusJupiterSaturnNeptuneBatteryChartInfographicsJupiterMarsSaturnVenusDespitebeingred,Marsisactuallyacoldplace.It’sfullofironoxidedustSaturnisagasgiant,composedmostlyofhydrogenandheliumVenushasabeautifulnameandisthesecondplanetfromtheSunJupiterisagasgiantandthebiggestplanetintheSolarSystem1234BatteryChartInfographicsIt’sthesmallestplanetintheSolarSystemIt’sthebiggestplanetintheSolarSystemVenushasaverypoisonousatmosphereEarthistheplanetwhereweallliveonIt’scomposedmostlyofhydrogenandheliumNeptuneisthefarthestplanetfromtheSunIt’sacoldplace.It’sfullofironoxidedustCeresislocatedinthemainasteroidbelt12345678BatteryChartInfographicsJupiterMarsSaturnVenusDespitebeingred,Marsisacoldplace.It’sfullofironoxidedustSaturnisagasgiant,composedmostlyofhydrogenandheliumIthasabeautifulnameandisthesecondplanetfromtheSunJupiterisagasgiantandthebiggestplanetintheSolarSystem01020403BatteryChartInfographicsIt’sthesmallestplanetintheSolarSystemVenushasapoisonousatmosphereIt’sthebiggestplanetintheSolarSystemIt’scomposedofhydrogenandheliumIt’sacoldplace.It’sfullofironoxidedustMercuryJupiterSaturnMarsVenusBatteryChartInfographicsVenus,thesecondplanetfromtheSun,hasabeautifulname,butalsoextremelyhightemperaturesandapoisonousatmosphereDespitebeingred,Marsisactuallyacoldplace.Itisfullofironoxidedust,givingtheplanetitscharacteristicreddishcastMercuryistheclosestplanettotheSunandthesmallestoneintheSolarSystem.ItwasnamedaftertheRomanmessengergod12350%80%30%BatteryChartInfographicsJupiterMarsSaturnVenusDespitebeingred,Marsisactuallyacoldplace.It’sfullofironoxidedustSaturnisagasgiant,composedmostlyofhydrogenandheliumVenushasabeautifulnameandisthesecondplanetfromtheSunJupiterisagasgiantandthebiggestplanetintheSolarSystemMercuryistheclosestplanettotheSunandthesmallestoneintheSolarSystem—it’sonlyabitlargerthantheMoonVenushasabeautifulnameandisthesecondplanetfromtheSun.It’shotandhasaverypoisonousatmosphereSaturn,theringedplanetinourwonderfulSolarSystem,iscomposedmostlyofhydrogenandalsoheliumJupiterisagasgiant,thebiggestplanetintheentireSolarSystemandalsothefourth-brightestobjectinthenightskyBatteryChartInfographicsBatteryChartInfographics214365VenushasaverypoisonousatmosphereIt’sthebiggestplanetintheSolarSystemIt’scomposedmostlyofhydrogenandheliumIt’sthefarthestplanetfromtheSunIt’sacoldplace.It’sfullofironoxidedustPlutoisnowconsideredadwarfplanetVenusJupiterSaturnNeptuneMarsPlutoBatteryChartInfographicsJupiterisagasgiantandalsothebiggestplanetintheSolarSystemIt’stheclosestplanettotheSunandthesmallestoneintheSolarSystemSaturnisagasgiant,composedmostlyofhydrogenandheliumVenushasabeautifulnameandisthesecondplanetfromtheSunDespitebeingred,MarsisactuallyacoldplacefullofironoxidedustMarsSaturnMercuryVenusJupiterBatteryChartInfographicsIt’sthesmallestplanetintheSolarSystemVenushasaverypoisonousatmosphereIt’sthebiggestplanetintheSolarSystemIt’scomposedmostlyofhydrogenandheliumIt’sacoldplace.It’sfullofironoxidedust57%85%95%70%45%VenusMarsSaturnJupiterMercury10080604020001008060402000BatteryChartInfographicsMercuryVenusJupiterIt’sthesmallestplanetintheSolarSystemVenushasaverypoisonousatmosphereIt’sthebiggestplanetintheSolarSystemSaturnNeptuneMarsIt’scomposedmostlyofhydrogenandheliumIt’sthefarthestplanetfromtheSunIt’sacoldplace.It’sfullofironoxidedustEDCBAA+BatteryChartInfographicsMercuryistheclosestplanettotheSunandthesmallestoneVenushasabeautifulnameandit’sthesecondplanetfromtheSunMarsisactuallyacoldplace.ThisplanetisfullofironoxidedustJupiterisagasgiantandthebiggestplanetintheSolarSystemABCD450km350km290km150kmABCDBatteryChartInfographicsJupiterisagasgiantandalsothebiggestplanetintheSolarSystemIt’stheclosestplanettotheSunandthesmallestoneintheSolarSystemSaturnisagasgiant,composedmostlyofhydrogenandheliumVenushasabeautifulnameandisthesecondplanetfromtheSunDespitebeingred,Marsisactuallyacoldplacefullofironoxidedust20%22%11%26%21%wBatteryChartInfographicsMercuryVenusVenushasabeautifulnameandisthesecondplanetfromtheSun.It’shotandhasaverypoisonousatmosphereMercuryistheclosestplanettotheSunandthesmallestoneintheSolarSystem—it’sonlyabitlargerthantheMoonVSBatteryChartInfographics$15It’sagasgiantcomposedofhydrogenandalsoheliumSATURN$18It’sagasgiantandalsothebiggestplanetinSolarSystemJUPITER$23Ithasabeautifulname,butit’shot,morethanMercuryVENUS$28Marsisactuallyacoldplace.It’saplanetfullofironoxidedustMARSBatteryChartInfographicsMarsisactuallyacoldplace.It’saplanetfullofironoxidedustMercuryisthesmallestplanetinourwonderfulSolarSystemVenushasabeautifulname,butit’shot,evenhotterthanMercuryJupiterisagasgiantandalsothebiggestplanetintheSolarSystem50%90%25%75%BatteryChartInfographicsDespitebeingred,Marsisactuallyacoldplace.It’sfullofironoxidedustIt’sagasgiantandthebiggestplanetintheSolarSystemSaturnisagasgiant,composedmostlyofhydrogenandheliumMarsJupiterSaturnBatteryChartInfographicsIt’sagasgiantandalsothebiggestplanetintheSolarSystemIt’sthesmallestandclosestplanettotheSunintheSolarSystemMarsisactuallyacoldplace.It’saplanetfullofironoxidedustIthasabeautifulname,butit’sterriblyhot,evenmorethanMercuryJupiterMercuryMarsVenusBatteryChartInfographicsMercuryistheclosestplanettotheSunandthesmallestoneVenushasabeautifulname,butitisterriblyhotandpoisonousMarsisactuallyacoldplace.ThisoneisfullofironoxidedustJupiterisagasgiantandthebiggestplanetintheSolarSystemACBDGeometricInfographicsMercuryisthesmallestplanetintheSolarSystemMercuryNeptuneisthefarthestplanetfromtheSunNeptuneDespitebeingred,MarsisactuallyacoldplaceMarsSaturnisagasgiantmadeofhydrogenandheliumSaturnJupiterisagasgiantandthebiggestplanetJupiterVenusisthesecondplanetfromtheSunVenusGeometricInfographicsVenusVenushasabeautifulnameandhightemperaturesJupiterJupiteristhefourthandthebiggestplanetofallthemSaturnSaturniscomposedofhydrogenandalsoheliumMarsDespitebeingred,MarsisacoldplaceofironoxidedustGeometricInfographicsMercuryistheclosestplanettotheSunandthesmallestoneMercuryMarsDespitebeingred,MarsisacoldplacefullofironoxidedustNeptuneNeptuneisthefarthestplanetfromtheSunandthefourth-largestoneEarthIt’sthethirdplanetfromtheSunandtheonlyonethatharborslifeGeometricInfographicsDespitebeingred,MarsisacoldplacefullofironoxidedustMarsSaturnisagasgiantcomposedmostlyofhydrogenandheliumSaturnJupiterisagasgiantandthebiggestplanetintheSolarSystemJupiterMercuryisthesmallestplanetin

theSolarSystemMercuryVenushasabeautifulname,butalsoveryhightemperaturesVenusGeometricInfographicsIt’sthethirdplanetfromtheSunandtheonlyonethatharborslifeEarthDespitebeingred,MarsisacoldplacefullofironoxidedustMarsMercuryistheclosestplanettotheSunandthesmallestoneMercuryJupiterisagasgiantandthebiggestplanetintheSolarSystemJupiterNeptuneisthefarthestplanetfromtheSunandthefourth-largestNeptuneGeometricInfographicsMercuryistheclosestplanettotheSunMercuryDespitebeingred,MarsisacoldplaceMarsNeptuneisthefarthestplanetfromtheSunNeptuneSaturnIt’scomposedofhydrogenandalsoheliumGeometricInfographicsMercuryMercuryistheclosestplanettotheSunandthesmalles