1、认识整万数.pptx

数起源于数。华罗庚,万千百十个,我们的新校园的建筑面积约4万平方米，校内共有184间教室和办公室，可容纳3200名师生共同办公，学习。新校园的餐厅共有2400个座位。建造新校园一共用了约112万千克的水泥，砖头约61万块。工人叔叔们的建筑工期约为两年，以分钟来计算的话，工人叔叔们的工作时间约为1343万分钟。,4万,61万,184,3200,2400,112万,1343万,千百十个,万,“满十进一”,10个一千是一万。千位不能表示，产生了万位,千百十个,万,10个一万是十万。万位不能表示，产生了十万位。,十万,万千百十个,“满十进一”,10个十万是一百万。十万位不能表示，产生了百万位。,“满十进一”,10个十万是一百万。十万位不能表示，产生了百万位。,百万,“满十进一”,10个一百万是一千万。百万位不能表示，产生了千万位。,万千百十个,百万,十万,千万,“满十进一”,拨一拨、写一写、读一读,万级,个级,个位,十位,百位,千位,万位,十万位,百万位,千万位,数级,数位,数位顺序表,52392134280539004600009000000606000090000008000000430000054000023000060000080000430097004050090020065080342156004565909020909000120080004000400010005005350060072300120020055000809000001009088823007800348997328700678920061234980008995678567846559099198829775009880,幸运之星,5239213428053900460000900000060600009000000800000043000005400002300006000002030000430097004050090020065080342156004565909020909000120080004000400010005005350060072300120020055000809000001009088823007800348997328700678920061234980008995678567846559099198829775009880,幸运之星,52392134280539004600009000000606000090000008000000430000054000023000060000010090000430097004050090020065080342156004565909020909000120080004000400010005005350060072300120020055000809000001009088823007800348997328700678920061234980008995678567846559099198829775009880,幸运之星,5239213428053900460000900000060600009000000800000043000005400002300006000004500000430097004050090020065080342156004565909020909000120080004000400010005005350060072300120020055000809000001009088823007800348997328700678920061234980008995678567846559099198829775009880,幸运之星,52392134280539004600009000000606000090000008000000430000054000023000060000034210000430097004050090020065080342156004565909020909000120080004000400010005005350060072300120020055000809000001009088823007800348997328700678920061234980008995678567846559099198829775009880,幸运之星,52392134280539004600009000000606000090000008000000430000054000023000060000043900000430097004050090020065080342156004565909020909000120080004000400010005005350060072300120020055000809000001009088823007800348997328700678920061234980008995678567846559099198829775009880,幸运之星,淮安大运河文化广场占地约70000平方米,读一读写一写,天安门广场是世界上最大的城市广场，面积有400000平方米。,北京著名园林颐和园占地2900000平方米。,钵池山公园占地1200000平方米。,北京著名园林颐和园占地2900000平方米。,写一写：,据联合国环境规划署的调查，每年约有六万个物种灭绝。,大约在六千五百万年前，恐龙突然灭绝了，原因到现在还是个谜。,一万一万地数，从一百九十三万数到二百