1.25乘以40-8的差等于多少用简便算法计算一点２５ 25×括号40-8括号的简便脱式算法
1.25\u4e58\u4ee540-8\u7684\u5dee\u7b49\u4e8e\u591a\u5c11\u7528\u7b80\u4fbf\u7b97\u6cd5\u8ba1\u7b97
\u5e0c\u671b\u53ef\u4ee5\u5e2e\u5230\u4f60 \u671b\u91c7\u7eb3
25\u00d7\u62ec\u53f740-8\u62ec\u53f7
=25x32
=\uff0825x4\uff09x8
=100x8
=800
\u670b\u53cb,\u8bf7\u53ca\u65f6\u91c7\u7eb3\u6b63\u786e\u7b54\u6848,\u4e0b\u6b21\u8fd8\u53ef\u80fd\u5e2e\u60a8,\u60a8\u91c7\u7eb3\u6b63\u786e\u7b54\u6848,\u60a8\u4e5f\u53ef\u4ee5\u5f97\u5230\u8d22\u5bcc\u503c,\u8c22\u8c22\u3002
=1.25x8x5-8
=10x5-8
=50-8
=42
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绛旓細=40*8+1.25*8 =320+10 =330 483+199 =483+200-1 =682 246-98 =246-(100-2)=246-100+2 =148 246+102 =246+100+2 =348 846-102 =846-(100+2)=846-100-2 =744 5.7*99 =5.7*(100-1)=570-5.7 =564.3 125*32 =125*8*4 =1000*4 =4000 480/72 =(24*20)/(24...
绛旓細(40+1.25)脳8 =40脳8+1.25脳8 =320+10 =330 鍒╃敤涔樻硶鍒嗛厤寰
绛旓細1.涓涓暟鍑忓幓3.6,鎵寰鐨勫樊鐨5 鍊,姝ｅソ绛変簬杩欎釜鏁扮殑3鍊,姹傝繖涓暟銆2.涔欐暟姣斾笝鏁扮殑2鍊嶅皯3,鐢叉暟鏄涔欐暟鐨4鍊,宸茬煡鐢叉暟鏄132,姹備笝鏁般3.2.5涓64鐨勭Н鍘婚櫎 1.44,鍟嗘槸澶氬皯?4.涓涓暟鐨5鍊嶆瘮40闄や互5鐨勫晢灏48,姹傝繖涓暟銆(鐢ㄦ柟绋嬭В)鍏.搴旂敤棰樸1.鍙垪寮忎笉璁＄畻 銆(1)宸ョ▼闃熶慨涓鏉￠暱480绫崇殑璺,璁″垝...
绛旓細宸х畻杩囩▼瑙ｆ瀽1.25脳(8-0.8)瑙ｉ鎬濊矾:鍥涘垯杩愮畻瑙勫垯(鎸夐『搴忚绠,鍏堢畻涔橀櫎鍚庣畻鍔犲噺,鏈夋嫭鍙峰厛绠楁嫭鍙,鏈変箻鏂瑰厛绠椾箻鏂)鍗宠劚寮忚繍绠(閫掔瓑寮忚绠)闇鍦ㄨ鍘熷垯鍓嶆彁涓嬭繘琛 瑙ｉ杩囩▼:1.25脳(8-0.8)=1.25脳8-1.25脳0.8 =10-1 =9
绛旓細60. 鏈変竴闀挎柟褰,瀹冪殑闀夸笌瀹界殑姣鏄5:2,瀵硅绾块暱29鍘樼背,姹傝繖涓暱鏂瑰舰鐨勯潰绉. 61. 鏈変竴涓灉鍥,鍘诲勾缁撴灉鐨勬灉鏍戞瘮涓嶇粨鏋滅殑鏋滄爲鐨2鍊嶈繕澶60妫,浠婂勾鍙堟湁160妫垫灉鏍戠粨浜嗘灉,杩欐椂缁撴灉鐨勬灉鏍戞濂芥槸涓嶇粨鏋滅殑鏋滄爲鐨5鍊.鏋滃洯閲屽叡鏈夊灏戞５鏋滄爲? 62. 灏忔槑姝ヨ浠庣敳鍦板嚭鍙戝埌涔欏湴,鏉庡垰楠戞懇鎵樿溅鍚屾椂浠庝箼鍦板嚭鍙戝埌鐢插湴.48...
绛旓細鍒嗘瀽:杩欎袱涓暟涓4涓120,鎴8涓60,鎴12涓40,鎴20涓24銆 5.涓や釜鑷劧鏁扮殑鍜屾槸50,瀹冧滑鐨勬渶澶у叕绾︽暟鏄5,璇曟眰杩欎袱涓暟鐨勫樊. 鍒嗘瀽:涓ゆ暟鍙互涓:7銆49鎴栬21銆35 ;閭ｄ箞宸负42銆14銆 http://www.zjxjxs.com/stjj/UploadFiles_5613/200708/20070818211129219.doc鏈夈備綘濂藉ソ鑰,澶氱粌缁 宸茶禐杩 宸茶俯杩< 浣...
绛旓細鈶ゃ10.6锛嶏紙4.6锛2.75锛夈暶13 鈶1.25脳546锛55梅0.8锛1.25 2.瑙ｆ柟绋嬶紙6鍒嗭級鈶3x锛25锛7x锛15 鈶(3x锛5)梅4锛25 鈶97锛2x锛26.2锛8 3.鍒楀紡璁＄畻锛6鍒嗭級鈶1.5闄30.75鐨勫晢锛屽姞涓0.5涔18鐨勭Н锛屽拰鏄灏戯紵鈶36鍑忓幓涓涓暟鐨2.5鍊嶏紝宸槸40涔0.8鐨绉紝杩欎釜鏁版槸...
绛旓細涓涓竴涓畻銆傚厛绠1.25涔樹互8锛岀瓑浜10锛屽啀绠10闄や互0.25锛绛変簬40锛屽啀绠40涔樹互40锛岀瓑浜1600銆備箻闄ゆ寜椤哄簭绠楋紝鍔犲噺鍚庣畻锛屽彧鏈変箻闄わ紝鎸夐『搴忕畻灏卞彲浠ヤ簡銆備篃鍙互鍏堢畻1.25闄や互0.25锛岀瓑浜5锛屽啀绠5涔樹互40锛岀瓑浜200锛屽啀绠200涔樹互8锛岀瓑浜1600銆
绛旓細杩欏洓涓暟缁勬垚姣斾緥锛屽唴椤瑰繀鐒鏄1.25鍜8锛岃0.25鍜40蹇呯劧涓哄椤癸紝姣斿间笉鍚岀殑涓や釜姣斾緥濡備笅锛0.25锛1.25=8锛40 0.25锛8=1.25锛40 褰撶劧杩樺彲浠ュ啓鍑烘洿澶氾細40:1.25=8:0.25 40:8=1.25:0.25
