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2015-12-10 14:04:22| й

ڽٿгֵƵʺܸߣԸҲǴٿԿҪ㣬㹻ӡҪһڣոʵڴв⿼©;һ棬ոʵǶԸ֪ʶĹ̡֪ʶʲô?ʵǶԷֲ˼ĺӦá

ôʵʲô?ʵ¼ĿԵָꡣڶ¼Уijһ¼ȫ¼гֵƵʣڸķΧڱȽԵȶijһ̶ͿΪ¼ĸΪκ¼ĸֵһ 0 1֮䡣

ڴٿвѧУ˵=¼Aķ/ȫ¼ķʽԸеһ¼“ŵ”ص㣺һֻ޸ܵĽ;ڶĿͬ

ٿΪҾٸ򵥵ӣ

һ64óһǰĸǶ?

Ϊ¼Aóķ4ܵķ10֣óķ=4/10ΪܵĽֻʮ֣޵ģңÿĿԶ1/10ͬġһ͵“ŵ”

Щͬѧܻò⣬ǾٸԵӡ“ŵ”Ӧĸ;“θ”ָÿ¼ĸֻ빹ɸ¼ij()ɱͬٸӣ

һ߳1mһӿ䵽ȥʣ0.3m~0.6mڵĸǶ?

ʵ𰸺ܼ򵥣0.3m~0.6m1m߶ռı3/10УܵĽ޵?˰ɣһ߶㣬޵ġ

ڴٿԵĸУ˹ŵ֮⣬һ֪ʶϣܹգͽظ顣ָͬظnεΪnζظ顣 жǶظأؼÿ¼Aĸʲ䣬ÿĽͬĽ޹ءȷ˵Ӳңÿһ׳ĸʶȵģ1/2ÿ֮䶼Ƕģ໥Ӱ졣

ڶظĸʣʵǿֱӴ빫ʽ

3ӣ6㳯ϵĸǶ?

pΪA¼ĸʣ6㳯ϵĸʣΪ1/6.

Ⲣѣʲô“ŵ”ʲô“ظ¼”ǰѧϰϵ֪ʶڻУⶼӭж⡣

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