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人教版小学三年级数学下册教案全册2 - 百度文库

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һ;˳ڵĿĵء԰ǿɲûмƻȥ棬˷ʱ䣬׳ԩ· ֮ǰúõؼƻһ£ǿ԰ڴһŶ԰ƽͼǸӺİг̡

1ƽͼ

ʦͼʱҪҵͼеķ־ҵ𣿵ֱ㳡һ 2ʶ·

ʦݲͬҪ˵˵ȥͬλôߣȫཻ С᣺˵·ߵʱҪѧķλͿ˵ĺ 3һ

С᣺һǵijطεʱҪȿ·ͼҪʲô㣬߲ܲظ·ߣ·ͼǣʶ·ͼʮҪ

塢ܽ

ͨ԰ʲôջ˵

ڶԪ һλij

һʱ ܿʱ5 ѧĿ

1ʹѧĻϣһλλʮĿ㷽ȷѸٵؽп㣮

2ѧͼѧϰϰߣ

13 ѧص

Ļտķ ѧѵ㣺

һλȷп һ¿

124ɼʮһɵģ84أ 242ʮ90ʮǶ٣ 2㣺

363 242 303 606 484 844 802 903 ¿Σ ʾͼ

Ĺ۲죬㿴ͼЩѧϢ е֪ʶ; 13ξ60䣬Բƽÿ˶䣿

ôģСͬѧҲеĹ߰˵˼·

С㱨˼· 1ھ

23=6 63=2 603=30 2 203=60 603=30 360ƽֳ3ݣÿ20 603=30

14 һɽڶҲû

2600Ҳ3ξˣƽÿ˶䣿 ģС˵˵ 6003=200䣩

3Ҫ240ƹϣҲ3Σƽһ˶䣿 2403= οǣ

С᣺һλĿڼʱ˼

ھǰѧij˷˼ɵ֪ʶֻҪȷļ㣬ʲôԡ

ϰһ ҵϰ

ڶʱ һλĹ㣨ܿʱ6 ѧĿ꣺

1ʹѧѧϰıҪԣ˽һλһ㷽 2 ѧݾ龳й㣬ѧõ˼άƷʺӦѧ

ѧءѵ㣺

ھ龳нг㣬˼· ѧ׼

㿨ƬÿСÿ׼30С ѧ̣

һϰ֪̼ܣ 1ʦʾ㿨Ƭ

15 18003 24006 2505 4206 27009 1407 1206 54006 ѧֱ˵һ鿪ֶֿ졣 2ͬһ˵ʽһ˻ش𣬴Եľ¡ 龳Ȥ

1ʾѧͼũóг龳ͼ

ʦһڿǹͬΪԲ̺⣬ڿǼΪ˽ѣʲôأһɡ

2˵龳ͼ

ʦǿô߲ѽ һΰ124߲ȫꡣ

μʾСϴϳˣʲô ͬۡ

ѧ⣬ʦ飺

ƽÿ˴Լ˶䣿 ʦôأѧۣ ̽ѧϰ֪

ʦܴŲһÿһ˶𣿿ʲôٵؽأ

ۺ һѧĹ̡ ܳ¼

1 1241201203=40䣩

2 1241204ٷֱ3ÿƽ40䣬ʣ4䣬ַһΣʣһ䣬ÿ˴Լ41䡣

16

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һ;˳ڵĿĵء԰ǿɲûмƻȥ棬˷ʱ䣬׳ԩ· ֮ǰúõؼƻһ£ǿ԰ڴһŶ԰ƽͼǸӺİг̡ 1ƽͼ ʦͼʱҪҵͼеķ־ҵ𣿵ֱ㳡һ 2ʶ· ʦݲͬҪ˵˵ȥͬλôߣȫཻ С᣺˵·ߵʱҪѧķλͿ˵ĺ 3һ С᣺һǵijطεʱҪȿ·ͼҪʲô㣬߲ܲظ·ߣ·ͼǣʶ·ͼʮҪ 塢ܽ

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