79×25+22×25-25简算 79✘25+22✘25-25简便...

79\u4e58\u4ee525\u52a0\u4e0a22\u4e58\u4ee525\u51cf\u53bb25\u7b80\u4fbf\u8ba1\u7b97

\u89e3\u6790\uff1a\u9996\u5148\u628a\u6700\u540e\u768425\u5199\u621025\u00d71\uff0c\u7136\u540e\u6839\u636e\u4e58\u6cd5\u5206\u914d\u5f8b\u8fdb\u884c\u8ba1\u7b97\u3002
79\u00d725+22\u00d725-25
=79\u00d725+22\u00d725-25\u00d71\uff0825\u5199\u621025\u00d71\uff09
=25\u00d7\uff0879+22-1\uff09\uff08\u63d0\u53d6\u76f8\u540c\u6570\u5b5725\uff09
=25\u00d7100
=2500
\u6269\u5c55\u8d44\u6599\uff1a\u7b80\u4fbf\u8fd0\u7b97\u7684\u6ce8\u610f\u4e8b\u9879\uff1a
\u5728\u8fdb\u884c\u7b80\u4fbf\u8fd0\u7b97\uff0c\u5e94\u6ce8\u610f\u8fd0\u7b97\u7b26\u53f7\uff08\u4e58\u9664\u548c\u52a0\u51cf\uff09\u548c\u5927\u3001\u4e2d\u3001\u5c0f\u62ec\u53f7\u4e4b\u95f4\u7684\u5173\u8fde\u3002\u4e0d\u8981\u8d8a\u7ea7\u8fd0\u7b97\uff0c\u4ee5\u514d\u53d1\u751f\u8fd0\u7b97\u9519\u8bef\u3002
\u7b80\u4fbf\u8fd0\u7b97\u7684\u76f8\u5173\u5b9a\u5f8b
1\u3001\u4e58\u6cd5\u5206\u914d\u5f8b
\u7b80\u4fbf\u8ba1\u7b97\u4e2d\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u662f\u4e58\u6cd5\u5206\u914d\u5f8b\u3002\u4e58\u6cd5\u5206\u914d\u5f8b\u6307\u7684\u662fax(b+c)=axb+axc\u5176\u4e2da,b,c\u662f\u4efb\u610f\u5b9e\u6570\u3002\u76f8\u53cd\u7684\uff0caxb+axc=ax(b+c)\u53eb\u505a\u4e58\u6cd5\u5206\u914d\u5f8b\u7684\u9006\u8fd0\u7528\uff08\u4e5f\u53eb\u63d0\u53d6\u516c\u7ea6\u6570\uff09\uff0c\u5c24\u5176\u662fa\u4e0eb\u4e92\u4e3a\u8865\u6570\u65f6\uff0c\u8fd9\u79cd\u65b9\u6cd5\u66f4\u6709\u7528\u3002
2\u3001\u4e58\u6cd5\u7ed3\u5408\u5f8b
\u4e58\u6cd5\u7ed3\u5408\u5f8b\u4e5f\u662f\u505a\u7b80\u4fbf\u8fd0\u7b97\u7684\u4e00\u79cd\u65b9\u6cd5\uff0c\u7528\u5b57\u6bcd\u8868\u793a\u4e3a(a\u00d7b)\u00d7c=a\u00d7(b\u00d7c)\uff0c\u5b83\u7684\u5b9a\u4e49\uff08\u65b9\u6cd5\uff09\u662f\uff1a\u4e09\u4e2a\u6570\u76f8\u4e58\uff0c\u5148\u628a\u524d\u4e24\u4e2a\u6570\u76f8\u4e58\uff0c\u518d\u548c\u7b2c\u4e09\u4e2a\u6570\u76f8\u4e58\uff1b\u6216\u5148\u628a\u540e\u4e24\u4e2a\u6570\u76f8\u4e58\uff0c\u518d\u548c\u7b2c\u4e00\u4e2a\u6570\u76f8\u4e58\uff0c\u79ef\u4e0d\u53d8\u3002
3\u3001\u4e58\u6cd5\u4ea4\u6362\u5f8b
\u4e58\u6cd5\u4ea4\u6362\u5f8b\u7528\u4e8e\u8c03\u6362\u5404\u4e2a\u6570\u7684\u4f4d\u7f6e\uff1aa\u00d7b=b\u00d7a

79✘25+22✘25-25
=\uff0879+22-1\uff09x25
=100x25
=2500

解原式=25×（79+22-1）=25×100=2500
望采纳谢谢

79X25+22X25-25
=79X25+21X25
=（79+21）X25
=100X25
=2500

（79+22）*25=101*25=（100+1）*25=100*25+1*25=2500+25=2525

25×（79+22-1）=25×100=2500

智商。。。
（100-1）×25

79*25 22*25-25鎬庢牱鐢ㄧ畝渚挎柟娉曡绛
绛旓細79*25=锛80-1锛*25=80*25-25=2000-25=1975 22*25-25=锛22-1锛*25=21*25=525

绠绠79X25X22鈪25涓25杩欓亾l棰樻庝箞鍋?
绛旓細79脳25+22脳25-25 =25脳锛79+22-1锛=25脳100 =2500锛屾墍浠ワ紝鎴戜滑鍙互閫氳繃涓婇潰鐨勭畝渚胯绠楄繃绋嬭繍绠楋紝杩涜璇︾粏璁＄畻寰楀埌鐨勭瓟妗堟槸2500銆

79涔樹互25鍔犱笂22涔樹互25鍑忓幓25绠渚胯绠
绛旓細=79脳25+22脳25-25脳1锛25鍐欐垚25脳1锛=25脳锛79+22-1锛夛紙鎻愬彇鐩稿悓鏁板瓧25锛=25脳100 =2500

79涔25+22涔25-25 绠渚胯绠
绛旓細79X25+22X25-25 =79X25+21X25 =锛79+21锛塜25 =100X25 =2500

79涔25+22涔25-25 绠渚胯绠 瑕佽繃绋
绛旓細79X25+22X25-25 =79X25+21X25 =锛79+21锛塜25 =100X25 =2500

79脳25+22脳25-25绠绠?
绛旓細杩愮敤涔樻硶缁撳悎寰嬭繘琛岀畝绠楋紝鍗 79脳25+22脳25-25 =79脳25+22脳25-25脳1 =25脳锛79+22-1锛=25脳100 =2500

79脳25+22脳25-25绠绠
绛旓細瑙ｅ師寮=25脳锛79+22-1锛=25脳100=2500 鏈涢噰绾宠阿璋

79✘25+22✘25-25绠渚挎柟娉?
绛旓細79✘25+22✘25-25 =锛79+22-1锛墄25 =100x25 =2500

79x25+22x25-25鐨勭畝渚胯绠
绛旓細鍥

绠渚胯绠
绛旓細鍥炵瓟锛(79鍔22)涔25鍑25

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