蘇教版三年級數(shù)學下冊《8小數(shù)的意義》課件

小數(shù)的意義義務教育教科書五年級（上冊）小數(shù)的意義義務教育教科書五年級（上冊）1蘇教版三年級數(shù)學下冊《8小數(shù)的意義》課件2劉翔12.88秒杰克遜12.91秒劉翔12.88秒杰克遜12.91秒3凱利18秒湯姆森18秒凱利18秒湯姆森18秒4柯蒂斯

17.6秒金西

17.1秒柯蒂斯17.6秒金西17.1秒5克倫茨萊因

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14.6秒史密森14.6秒克倫茨萊因14.6秒舒勒14.6秒史密森14.6秒6劉翔12.88秒杰克遜12.91秒劉翔12.88秒杰克遜12.91秒7柯蒂斯

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17.1秒柯蒂斯17.6秒金西17.1秒8劉翔12.88秒杰克遜12.91秒十二點八八十二點九一劉翔12.88秒杰克遜12.91秒十二點八八十二點九93個月3個月103個月1分米1米()米110米0.13個月1分米1米()米110米0.1113個月023456789101分米1米6分米()米610米0.63個月02126個月023456789101分米1米6個月0213023456789101分米

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9100米0.09米9厘米02141分米6個月023456789101米1分米6個月0215023456789101分米

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9100米0.09米9厘米分母是100的分數(shù)兩位小數(shù)02177個月023456789101分米1米7個月0218023456789101分米11000米0.001米1毫米1米02197個月023456789101分米

6771000米0.677米677毫米米7個月02201分米1米1分米1米21分母是10的分數(shù)分母是1000的分數(shù)分母是100的分數(shù)0.80.350.0150.080.1360.2①②③分母是10的分數(shù)分母是1000的分數(shù)分母是100的分數(shù)0.8222100=0.02310=0.31231000=0.1232=0.023=0.3123=0.12323391000.39=5100.5=610000.006=390.39=50.5=60.006=24“1”01“1”0125“1”010.10.20.30.40.50.60.70.80.9“1”010.10.20.30.40.50.60.70.8026010.10.20.30.40.50.60.70.80.90.010.020.030.040.050.060.070.080.090.100.1100.1010.10.20.30.40.50.60.70.80.90270.0010.0020.0030.0040.0050.0060.0070.0080.0110.0120.00900.010.010010.10.20.30.40.50.60.70.80.90.0010.0020.0030.0040.0050.006280.0010.0020.0030.0040.0050.0060.0070.0080.0110.0120.00900.010.01000.10.20.30.40.50.60.70.80.9……10.0010.0020.0030.0040.0050.00629010.10.010.20.30.40.50.60.70.80.9010.10.010.20.30.40.50.60.70.8300101310120123201230123333.14012343.1401234343.143.143.1413.14153.141593.1415926535897932384656433.15012343.143.143.1413.14153.141593.1435蘇教版三年級數(shù)學下冊《8小數(shù)的意義》課件36012343.143.143.1413.14153.141593.141592……3.15π012343.143.143.1413.14153.141537012345601234563810111213141516101112131415163910010110210310410510610010110210310410510640100010011002100310041005100610001001100210031004100510064170007001700270038844……884570007001700270038844……8845428844.4334568844……88458844.4334568844……88454301231011121312.91秒12.88秒01231011121312.91秒4412.91秒12.88秒1011121312.8812.91劉翔杰克遜一位小數(shù)兩位小數(shù)13秒13秒12.9秒12.9秒12.88秒12.91秒整數(shù)12.91秒12.88秒101145小數(shù)的意義義務教育教科書五年級（上冊）無錫市梅村實驗小學朱峰小數(shù)的意義義務教育教科書五年級（上冊）無錫市梅村實驗小學46小數(shù)的意義義務教育教科書五年級（上冊）小數(shù)的意義義務教育教科書五年級（上冊）47小數(shù)的意義義務教育教科書五年級（上冊）小數(shù)的意義義務教育教科書五年級（上冊）48蘇教版三年級數(shù)學下冊《8小數(shù)的意義》課件49劉翔12.88秒杰克遜12.91秒劉翔12.88秒杰克遜12.91秒50凱利18秒湯姆森18秒凱利18秒湯姆森18秒51柯蒂斯

17.6秒金西

17.1秒柯蒂斯17.6秒金西17.1秒52克倫茨萊因

14.6秒舒勒

14.6秒史密森14.6秒克倫茨萊因14.6秒舒勒14.6秒史密森14.6秒53劉翔12.88秒杰克遜12.91秒劉翔12.88秒杰克遜12.91秒54柯蒂斯

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17.1秒柯蒂斯17.6秒金西17.1秒55劉翔12.88秒杰克遜12.91秒十二點八八十二點九一劉翔12.88秒杰克遜12.91秒十二點八八十二點九563個月3個月573個月1分米1米()米110米0.13個月1分米1米()米110米0.1583個月023456789101分米1米6分米()米610米0.63個月02596個月023456789101分米1米6個月0260023456789101分米

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9100米0.09米9厘米分母是100的分數(shù)兩位小數(shù)02647個月023456789101分米1米7個月0265023456789101分米11000米0.001米1毫米1米02667個月023456789101分米

6771000米0.677米677毫米米7個月02671分米1米1分米1米68分母是10的分數(shù)分母是1000的分數(shù)分母是100的分數(shù)0.80.350.0150.080.1360.2①②③分母是10的分數(shù)分母是1000的分數(shù)分母是100的分數(shù)0.8692100=0.02310=0.31231000=0.1232=0.023=0.3123=0.12370391000.39=5100.5=610000.006=390.39=50.5=60.006=71“1”01“1”0172“1”010.10.20.30.40.50.60.70.80.9“1”010.10.20.30.40.50.60.70.8073010.10.20.30.40.50.60.70.80.90.010.020.030.040.050.060.070.080.090.100.1100.1010.10.20.30.40.50.60.70.80.90740.0010.0020.0030.0040.0050.0060.0070.0080.0110.0120.00900.010.010010.10.20.30.40.50.60.70.80.90.0010.0020.0030.0040.0050.006750.0010.0020.0030.0040.0050.0060.0070.0080.0110.0120.00900.010.01000.10.20.30.40.50.60.70.80.9……10.0010.0020.0030.0040.0050.00676010.10.010.20.30.40.50.60.70.80.9010.10.010.20.30.40.50.60.70.8770101780120127901230123803.14012343.1401234813.143.143.1413.14153.141593.1415926535897932384656433.15