2019年新课标版三年级上册数学教案:《估算解决问题(一)》

2019-09-18 17:22:00来源:网络


  

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L1el/NX6ljNtmVufE9dPRPb7vCutT9V/3Q3kYUfs7qXNNdOo7Tt2PyhxAWBdlnclded19v1vnRPmqre5TZjUhVEGe9dMZ1+p1tM+r158Y1spxvLYTnbPsPHaOqzI+pZ0scLrXSdR2J9yifejeV+q+v/ZzLa/Wj/q7gzqW6lwp9Xb6OT22l/0mrNWy0c3uvH59vzMJdW7Yjk67nRujCle1vaxc94ZVroMs4NRxZ+fSnUBWZXcmEieM1AB17i+3XHYunL6VkFP+POHU9atez6tt6nV8p8411D3/u/3cMTbCelFGnXR+Xlc/znhOnQ9lXNH4OiGZ1csuys7k4o5N7U/Zno2zegBRxleN96mwrtpQgr0qr/TvllkFdTW+6hgrx0U9Bp37e/e+qsaw2v/rdbt7bnbmo6j9U8FcXRfZuVT3ozu2yzgI62sZ54Lp9PNTzgnP3Qvdodz02T691nOOl3LBd/bfGVcnVK59d4+f0r5zfWWvr21Xk7QSDCeCRBlXdM67k+5rf86Ys76z+9jlXr/uPaKcN2f+vEs1dmdbVcete2f5lzER1tcyzgWwEyDq+90JOhuz0lY3qJ1+3DE5rzvj6oa124bTnrqt22ZW5l1h3dle9e3U3zlvJwNk5/pVt//GsL57Ltqp446NsE623xGYr9vVn2hsSrlqPKfO++sYVuOM+qsmeGVfqkDYGVc0hqiOEmoRdQynH9qc7bvn751hXdWN7ielveyhZTcwdq/fqN2qr9XxmBrWTjlnH5zrRZnDd8ZGWJtlT4V1VlY5kc4keGryUykTWPW+Umf1Oro5uuOKxlb1252goxs8u/Grsbnbs4lG2S817J8OaydwXusoE65zbXW51+9OgJwIuruoY3D3/7Ve9d67xvbPn4R1VF65yNUfdTzKzbRquwqNbD9PcG4EZYJRxubcIOq26hgqN9VrOTdsd3TOuTI+Nbx3wlo5T+7+qRPw7rly98dtu3v9RnVO9X8tMyGs3Tac/Xt6bNf3CWsAAIYirAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wfqM7v06tW3b1NYHRz6d4Ha96DKrff6voax6jbXf1ed3+xDVZfTWhUl8d085XcDrjccqvyqrXf+fY79yXr/XV89/Z3j1Hu2WyeoT1pcwTQeX0k72v7lv3hurWrdq9+xi7x6sbClMfbDrjqt6Ltu/s/92h5ba7er+6J502nXt2Vc8N62vd7DqO+nLOu9JPZx57Yv5T74mdPq7l3Hvzz7smlKedCoF3tpHdVNdy7wifd4fUVXZDO5Npd3/UEFAmtez9E7IJsdtv5/rKgrFzTarjXIVOtC+rMtX1Fe2XMrZonNE1Eo1BbbM7vm7/nfaU87E7h6n1srnYlc1Lf6ZMrHfbOUmnTsZq8utcFK9tqH0647uOVWmruuneQR373X3vbFPCY1cVqk59dVydcu412RlH1Z86jrvCujP+qo5SprpGrsfEmcfcctlxrI5R53o5Ne9152vC+k1tXNtxbwpnLJ3yJx4k1P7uoOxDNHHu7P91DN3t7wrr1f51HvROX5enzolKOQadsL5uc+7HqC/lgSBqd1Wvui/UtqLfO/fYifNdnafquCn77h53Z15/Od+E9WuZalK/YyzuhaJe5FU7p1UT9ulQVMeTjana5pbrXGdZfTesdybFaF+y8+JeZ++4LjPXfbvuc1Tn9c9rO9Xxcq4j5ZhH23YDNusj2tdOaFV9KX8qbahjqtpX71v1OBPWF92JVj3ROxd5dpM7E4bb14k6UX3lWGSvo7Ydzg1Rja/Tp1omG1t0nk8f41Uwd86lc40o11j3muyGYtZ/VKdquzOuVRtKUHWD6bqfO/NltY9uUEXjO3nNqO8p+6SUcY/BP38S1lkZ9eJXj6N6Yq5tdyeMrK+TOuHrlu+EtTLBvZZ1Q2HVjiu7JrIQccei7rs6LvXHGeMpJ8K6+v3dYb3qoxvWTh9ZG+oxd+7L65/KPmZjVcrcMb8S1qI7w1ptf1XOmYSdE+yOb3fyvTus1TKvZbvHtjs+tZwzwT4R1tm2Jx9Uor5PXZNVH691qhC/1lmN58Tc+lRYV8chK++eE/e6zNpVXzvz0V1zU3QNEdYX7o2rHki17aoPd/KpLq6dfrr7pdbNLkhlezWObIJVx9u5YdVyzgQbTTadc7fbj3pOo2vrxHV58jysyinXXicAXt/r3FfOvZ/1r9Y5fb/s3perP6/XSxF0/7XNKXdiruyWIawbZZ44Vt0J8dTY1UkhqtudbN2+FNlE50w2zgTrPlRUoabWUcZQTYrRPleTYXeC65S54zrJxrPTx8mwVsd0MqzVOqs2lDE6/arjcsZc9e0grA/q7qc6Qe6o+ogmbrcPp8yJPt0xnDzW7vFclen09+77qXuMXycsJWTUfd09zndfk1HbO+fy5HVQPVRl5dWHhejcv14rp+4X575U9r3zAKn0sfqp9qtSnbfs3vvnT8IaAICJCGsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wBgBgOMIaAIDhCOugzPXbT5xvX3G/reXkt/MAAH4fwroo43wVm/qVdWpfAAD8/UtYh2VWAVwFbjfko9cAAPz9S1iXZZSPwQlrAMCdCOugzOrvrKN2umG96hMAgCvC2qyXBfNqlaz8IzOCGgCQIawX27OgVcPa6ZuwBgBkCGuxLGENAHgXwjopo/xDstdy1T9G+5ZjDAA4i7BOyqj/YIyVNQDgToR1Uub0MSGsAQAdhHWwPfuHZm64EsYAgB2ENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1h/id39duvv9HfXObq22/naU/UrVt1xXcew85WsAH4fwvpLKN/TfS2/+33eO8F2x3lajT36fWdc1zaVYx21/63XK4B/I6zf6EQgOn29/hltr+pn29WfaFx3HgcloLPfT46rejCKygH4XoT1L1cFwep4dIP31HjvbLMK5GosVZh2VufRebn7WAP4HIT1l3A+alU/ilXfV495N/zUtk+vipUwV1bMq3J8HA7gFWH9Je5YBar9KP0/9TF49afaTlTH/YjdHS+A70RYfyh3P7KPV6NAdEOzWhWeemBw6r6WjVaw7jHI6rhhXbVLWAP4+5ew/midsOrU79TrhEwnoNx9uIZ0tx1lu7uyXpUhrAH8/UtYfzR1tRsFdVbfXVFGbTi6Ye2UU1bE0XvKuLJVs9JuFtgAvhdh/eE6K8I7V7BRHzvjctpQx1N9DJ6FtxrWaplVu91PQQD8ToT1mygrV3XVqPb3+mf2e7W9CqtoFe+2f3JlWbXpPhAoH2W7bU25NgHMQ1h/ASUss23Kx8bKg4U6jqpvlzLWLHydbcqDTPRg8sRDG4DPRFgDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCE9UCdr0Wcsl+73xO9U2/nu6RPlQeAO9hhvfu9yE7dO0yZbFff2ex8J/TUEOmEYfQ9z+6+3hnWfM80gHeywvo6QV3/rDrJfn/KpMn15MPLhP069SCXXSNZWFYhGgW1E/4TjjOA79NeWSuhm61G3rU6mT7ZdsY3ZbXXPddu2dVrZcVcPQRU5accZwDfRw7rbLLKVjrOIJ4wbYJ1wq3atvr9xNh2yqqf2KjvRyttp5zSn3ItT7uWAPxe7ZX16nVnhf20KROsE1BKmXeHtTKuqp+dlbXyOytrAJ9qa2W9aMTu+GmTJthOuKmrwtff1Z9d0SctVR/uyjprM7sWd8NaHTcAnGatrJ2Vi9rO0yZOsJ2VZecTjrs5HzNf3z+xsq7GwMoawKeyVtar3y+N/Nf7T63qVNMmWGfFqQb0qX10z81OWKvvKyGr1GVlDeCTWCvr10qvE7mzsn73BPfu/l+54RY95KgB1hnfnWHdeZh7Z1izsgbwLtbK2vl4surwXd7d/w8lCLrH9F37+BrW7v44Iay0ycoawG/SXlkHjdh1n/bu/lfcj4ejMu9e7Z38GNxZnV9fV3XV/pSHj4nXE4Dfxw7rnY8lJ0xu7+4fAABXa2X9yb5lPwEAvwdhDQDAcIQ1AADDEdYAAAxHWAMAMBxhDQDAcIQ1AADDEdYAAAxHWAMAMBxhDQDAcIQ1AADDEdYAAAxHWH+hu47B6tuo+JaqPe7xetfxVb/Q51Qfd35l6Yl2nC9GUsqoP58iOpeftA9//9bf1qfWyd5ftLv/9ZbZ9imT96ddDCdUE6nyTWnKOXO/je2JyedkH93xOBP3dUzRfXN6jLvc8OyGzxOTvDOu7H1lbJ1xV2Gw4+57cvqDhzsu5xrN3lv1HdWTwjrraLWtuoir9u4wLayfGE83rDv9KOdc7XfSudoda/f+Um78nclPDaIT++bWyULxzjA5UTcK1O5+7O73u0PwKrqunf1wrte79j+b79Rz+Vrn2sbqPTmsq4FX7xPW/99TN8+TYX39vbq51PbeLRvLyUC73rx3Hy/1Qara/58/nfDJ6lz7dI9fR2c/or5PXhOrtqP3lH4m3VeuzvX6xHz387q6TpRxVnXtsHYu5ujp56mwisYywVNh7U6k6k9Wb7V/1bWgXvBPnkelr9NlOhPybsBk758+F93j1dnHnbFVxyEagxPU6rE4dY7fOQd255bX+sr7zjnsyuZBpw21rhzW3YviXaEcmTKOH+8Yz12Ta1bPDZ9s+28N6+php3s8nJCP6qjtRwEbvZdN1Oo5Pn0t7E78Vfi8IzyVY7obpM44uuU6x1Q93p39V6/tVR+rshk5rFeDcw7CarDvCPFPC+s7xntHWFcX9smwdu1OOk+F9WuZ6GaOJovu5Brdw6t7VmmjE9bONqXtVRmn3O5kXe1DJww7daL6CnVuv7bf4dRTrtfra3dfnDrZ/VeVj/rJroF//tw/idVFlrXzlE8La7WMU7fzXjdkq7DemYCe8nRYd457d1tW9nUsncDP+nfDuhOkq/2oKPPZqu3ovN19fyvuDKvX7c4xPnXfvzOsq3OftRNd41V///x5b1grZZ8wJQB+dCbw3fZ3w7oqr05cTuhf33/6PHbHqm6Pyjlh3Zn81HPSbaNqLxvvqWPqlO08eKy2OXOdGoTdkHsirNUyStuda+0dYV29XwX8a/0sxK99tcM62xaFtDqR3OETw9opp9RT3nPC+fpavVEI63W5zsPNqW3KOVTbyOqemPzvuHdOhWL2+04f3X1y6lb3ujqndMfz7rB29t/tvzOvLvrqX/jORVwN6G6TwvqJB5bO5LAb8G4wdSesp1UPDzvB9NpOVO+OsH7tNwqVSme/nwzrk9R9Uu4pZVvWvlN/9yHA7c/pIztuUf1VuWwf79r/6L55Ldd5+MjKSmHtTsbZAAjrWaqLRL3Idx8K1DEpOg8qU0TBmU1GUTt375967pXxXtvpbD9NHc/1Pad9p8xuf91x3HXcp9x/3Yfa121Rnep9c471Jk5n4lNu5qdMuTAAAFBZK+vf4Fv2EwDwexDWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWQnnnW8Ke/hYxAMDvR1gvtiuBXL3/LccTAHA/wjrYngXvqS8TBwBAQVgH2wlrAMAUhHWw3Q3r6/ZvOZ4AgPsR1sH21SpZ+UdmBDUA4DTCOtiullu9/y3HEgDwDMI62E5YAwCmIKwX218DN/r4+1uOFwDg/QjrYDsrawDAFIT14XYIawDAaYR1o/63HCsAwAyENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1g/2N/P12tGP9UYq7Gv2sv6eYdr/8o+Re+v9qezf59w3AB8N8J6SJ9Z6FThHtVRxlA9QJw+XjthrY7JPXad4wYATyKsgzJPB1Un0FfbnZW62uYpnU8M3GPUGUfnuAHAkwjrYvvucYnaO7XyjdpQP86dGtbRR9PdPrIyneMGAE8irIvtp8K6CtzVR7dq29d6WcBVde4Kqe5Dwe5H2sqKuXPcAOBJhPXh8lH9KoyUUO2M51rvHSvrzgPLa/nVWNRwd+pGY676+5Z7B8D7ENbNsmo7u2GtrrjVIDwV1jshpY6h+vShalv9vXPc1PEAwAmE9UY5d4Xmriqr35VxKWFd/UR93BnWVUDfsbJ2jpvaJgCcQFg3y/yUc1em6gpXCfmqTtVn9J66vXPNuGPYDdzVsTpx3K59AMCdCGtz+057nRXvqq0qqJRg6ozfqee0p4S1Ou7Ow1jnuAHAkwjrxXblY2C3vyik3JV29LrqKxtf52Pwjk7AviusAWASwnpAf1koVtuuv7vhe/qTBrUd9WEgKtMN/uyj7qceWgDARVgDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYQ0AwHCENQAAwxHWAAAMR1gDADAcYf3ldr5qUi3b7WP1rVd3fxuW861b2TeJrb7da3df7rp2V99Cdke/T/UTtZddh+qP059SVq3jHptq3989D3bG49TpXms7x6lzjprXzHeE2CftZ2esp+pUN4I7qWXBpdZRx+dYBajS/6quLEIAIgAAC3hJREFUWv9kiJzi7Pcn9LNqc3eC/qSwvvahXD/d621VJutjtT/K/RH9We1/1X5URy3fPWZK+6s6hPUw7gXlbN/t/1R/yn5UgXjCbsCqv3f35a4Hld+uE8LZZHvqvqv6qx4MoxB2+u2Ixv26rQrUKMyVAHbOp/pTjU2to475tf3oddUWYT1MdSF26p7o/zoO9UlSqacEotufQpk8u+Hc3ZfuhLPriT6e6seZ3F/HFNVZbeucm6zNbNzO2NRxqqoxVX8q+5IF22rcyv3Z2SdH5xqI7nV1vH/uuCEn+oT9rMbonNiqTHZBddpXLk61zegGdcapcIN4NTbleHX2xTnOHcpEd+oYd/vpBrkb1tf+qvru69e2r9s7gZxdq9l1lo1PLRcF5vX9rJ6yL6/vqffmtc5OgCr1Muq8oCCsB3oqrLOybvhUoRXdnO75uNbbPZ/ZxKZMlNWfVd9VHfc4X+spngjrnX46YV2dz1X7UUCfDu/uMe4E3M+fnWsoG5dy/atjqvYlarMzB2RlO9d5dmyrY+xe14T1QO8Oa+UmUEM5a7MK9+ziVwJOtRpTddNl46rec/elGnO1P+7+V30pE1QVbt3AUlVhkvVbBU339er9anzq8a2CsRpHRL2fleNdBVi1X845dfYl6qu6nt02V9s689SfkzfKZJ+wnzsXgFMmKqvcBOoEverjRJhUk+/O/itjW41D2a/uvqjHOeoj05mkOp7q57WvTlhH77tB2rkGuuOpwrp7vJWwXrXpBmlnHFEfynlZ7X9nrN1r4LWu09c/f84PsRM+ZT/VybizPSrv3GhuwCkTR3TzREG4c4yiss7YnBt/Z1+6+6SWz877EwFa9dMJ8m5YqyHbeR31F723qhOVc8KsGp9Spgrn6nirwZaVOX3vKPPAiX66COuhng7r6MJXQsoJt1XbSsBn44nqqbKJIqsT/alOLE7Ar8qcupajsZ7sY6cfN6xPhGp2var9VuU6wXutXwXdqtyJ8FFC+uT1GY3HPebdfqr3nryuCeuBqidNtY7Tj3MznCyr3gindY9lNElFdTv7ktU5eWyU8/+p/aiv1R+nX6dc59554nh2Q+70PZs9PO08dERl1PO/c48S1oVv2c8OJ7S6DwtqOCqrgpNP70pfq3FG+7S7L0qgrMrtODWpvLMf5SHw+v5OyDrbo3LqPaFyHkayNtwHlOq67DwURfeFc57V66q6Jqo+775HCWsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wBgBgOMIaAIDhCGsAAIYjrAEAGI6wvrFt5yvpojbUMp16zrE4NfZVndVXyinHTT2mAPDpCOvFdvc7V1d1V/2dCLwsuNy2T4f1tZxy3LLjk/XpHlcA+GSEtVjeCdHO72qwRduVBwnlvWrfnHpqW9VDzqqN1b4DwG9FWAdlnFW1E8jVWJyVZvQg8a6w3l3dqx+DE9YAvg1hXZRZBWL1EfhOeLhhrYSws9pW2lLKqivmVTm3z2+5dgF8L8I6KOOsrF/brf50xqeurJXfs1XrqY/OnfFk1GNHUAP4FoT1ofJR+CmBqD4YKB8PR2PeCV6l/HW7+nu2z4Q1APw/hPViu/qzavca0mq/Sjl1pb0b1p2gvpZxV9bVpwFRnW+5bgF8N8LaLFsFRxXm2XtKOKlj6b53qt/s04FVnajct1yXAJAhrJNyaki9botW2MpKe2JY37n6fn2tBPqqrW+5bgF8N8JaKK+EQvXRrVo/K1+t3qu6yntVf+6nB1WfOytowhrAtyCsF9uzMFJCygmyKnSdFeeJAHe4nzxkH3U7DwUA8G0IawAAhiOsAQAYjrAGAGA4whoAgOEIawAAhiOsAQAYjrAGAGA4whoAgOEIawAAhiOsAQAYjrAGAGA4whoAgOEIawAAhiOsAQAYjrDG1tdnOuW6X4P5xDlzv5u7+lrTznd9Z21lXye6446vTj3VT3QMu/Wqus4x7pzfU8fAPf933j/Xa9MZi3pefpvsOhCvz+84WJ+yn91xOvWyC6TTjlPGmexOBF9lJ6zViTOqowT8XcdgclhfyyiT+6qMMxGuyr07rK/Xhhty7vlUj7MzLuVhPboHnPJP64yveq+6tgnrQapJpbpITwTt6ePkhvWTN2fnGNyxKqiOwen+orbueDDY7Ue5HqJt7v3ihLVzjVYPElm/nd8798/Og4Bz3Dp9Vf2vtqkPAlnd07J7Wgl5wnoQNTx2gzaaMJyLXJ0QOnWicZ7mHMcoDLp9ZGWqm/nEZOJMqO/sZ2dMbghmxzgKV2V8VTvdQM72VR3bqs07wv0kZ2zVNveho6uaS5W6hPUQ3QvMaScq604+jmrsq0loJ+C741K3K+NVy0d9KQ8GJ8I66uP0JOX0k4VGdd1Hxza7btTJWjkP6nl0z3/3fJwO6879efqeVsp159LT99i1rWp+yOr+8+fsEDtl+n52QvZUO9EFe2JM1cV5al8cq4lTDUj3WCnlzRu27K87oe0Ew8l+onDrhq7Sz6rebliv6lb33Kov9dxH/Tp1VGrbT4XwtZwajp2w7j6AZNetcm0T1kOcuqg7E5UTImooX/tRL2ilXrU/rs5Nei13Kqyr/c4mbGdyds5tNa7uBKWMzQmF7PxEfVTHflXevZ6jdqL9ys591U/nXuvonCOnzE697Brsbuv0FZV1z8tLvdkhdsr0/Tx1kTtllAlI7aN7I0Vl3PN1d1hXk+ypsK7qviusu54M6+vvu8d4VW93Qo/uvVX5qMzJe61r9VCUHeMTDxEn7u93hXW0v841SlgPok5GO2Wq8nc+Ta7KZxOVe2N3zrF7DHYDt7phX19H5arx7QbISZ1+smMW7d9qu3q8ovGpD0Sdhw/lHEb7q1yzd5/Tzhygvlbb6fT3rrDOtqnzGmE9iDLhd+o75d0AqvqtwjoqU7Wnvt9pz92f3XEpx6M7wVV93tlHt59V4FbjiQKxqr/78FWN6zqOTtBe98fZr5PzXnZe3PObvc7675S7K6zd+VOZO4pzOT/ETviU/YxOVvakHdU70VenjdW2UxPK6cnH7eNdYX3a6vzeFdY7k/duWGf9rOp1r9nsXnLGsOpjN0TuuI6yhyn3/J4O69d2qznO2aaMpQrraN+VhznC+gtFF002Wa0eGKKfql/nYSAa867oRlJuUudhST0e1/I7x1mRjfdUHyf6Uff/etzUftRwvraXjbWS7YvSX6f/k/fPbj/uOE5ejyeoc4R6jV7rRf0R1gAADEVYAwAwHGENAMBwhDUAAMMR1gAADEdYAwAwHGENAMBwhDUAAMMR1gAADEdYAwAwHGENAMBwhDUAAMMR1gAADEdYG2XUY+R+O9IT3ySjfJOQui2rc91f5zh0+wOA346wNspkX2enBHL1vvswcP19p29lbFXwZvuSfRVcFe7Vg8a3XLsAvhdhHZRZhUjUzqqME1bR62p8Sp0s+HZXvKt9jPqp6kfHOesneg0Avw1hXWxXAuXpsK76yvpVHj6qNpU6ysfghDUAaAhrs3wWJm5YX7efDupoHGogXutUK+buJxKvv6sfg1f7AwC/CWG92L4KmywUorBWQ+fOwHHD0innrL6rB5psZZ21/S3XLYDvRlgH27OVYbTCdFe51zbvUD0wdFfAq9+zBxQ3rJWHAsIawLcgrIPtarhEZZ2+37Wyfn19cmXdCeGoHB+BAwBhvdyerQirj7yvr1dtPakKa6VctDLPgl95mKlW4N9yTQJAhbAutq/Kq6tTte93rqzdckodJdCj3/kYHAD+G2Ftlt85Tu8K62hlnI3tVFi7CGsA+G+EdVJu9VFwt893HV/l76yVTw9WdaKVcfXjjJVABgDCGgCA8QhrAACGI6wBABiOsAYAYLh/hTU//PDDDz/88DPz5+/fv3//L92z3d5h1XtAAAAAAElFTkSuQmCC" width="491" height="733"/>

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