a➗(b➗C)去掉括号的简便运算训练题？ 综合算式的所有简便方法，例如乘法分配律、减法的性质、加法交换...

7000\u00f725\u7b80\u7b97

7000\u00f725\u7684\u7b80\u4fbf\u65b9\u6cd5\u53ef\u4ee5\u7528\u9664\u6cd5\u6027\u8d28\u6216\u5546\u4e0d\u53d8\u6027\u8d28\u3002
1\u3001\u9664\u6cd5\u6027\u8d28\uff1a\u4e00\u4e2a\u6570\u8fde\u7eed\u9664\u4ee5\u4e24\u4e2a\u6570\uff0c\u53ef\u4ee5\u9664\u4ee5\u8fd9\u4e24\u4e2a\u6570\u7684\u79ef\uff0c\u4e5f\u53ef\u4ee5\u5148\u9664\u4ee5\u7b2c\u4e00\u4e2a\u9664\u6570\uff0c\u518d\u9664\u4ee5\u7b2c\u4e8c\u4e2a\u9664\u6570\u3002\u5b57\u6bcd\u8868\u793a\uff1aa\u00f7b\u00f7c=a\u00f7(b\u00d7c)=a\u00f7c\u00f7b
7000\u00f725
=7000\u00f7\uff085\u00d75\uff09
=7000\u00f75\u00f75
=1400\u00f75
=280
2\u3001\u5546\u4e0d\u53d8\u6027\u8d28\uff1a\u88ab\u9664\u6570\u548c\u9664\u6570\u540c\u65f6\u4e58\u4ee5\u6216\u8005\u9664\u4ee5\u76f8\u540c\u7684\u6570(\u96f6\u9664\u5916\uff09\uff0c\u5b83\u4eec\u7684\u5546\u4e0d\u53d8\u3002\u5b57\u6bcd\u8868\u793a\uff1aa\u00f7b=(a\u00d7c)\u00f7(b\u00d7c)=(a\u00f7c)\u00f7(b\u00f7c) (c\u22600)
7000\u00f725
=\uff087000\u00d74\uff09\u00f7\uff0825\u00d74\uff09
=28000\u00f7100
=280
\u7b80\u4fbf\u8ba1\u7b97\u662f\u4e00\u79cd\u7279\u6b8a\u7684\u8ba1\u7b97\uff0c\u5b83\u8fd0\u7528\u4e86\u8fd0\u7b97\u5b9a\u5f8b\u4e0e\u6570\u5b57\u7684\u57fa\u672c\u6027\u8d28\uff0c\u4ece\u800c\u4f7f\u8ba1\u7b97\u7b80\u4fbf\uff0c\u4f7f\u4e00\u4e2a\u5f88\u590d\u6742\u7684\u5f0f\u5b50\u53d8\u5f97\u5f88\u5bb9\u6613\u8ba1\u7b97\u51fa\u5f97\u6570\u3002
\u6269\u5c55\u8d44\u6599\uff1a\u4e00\u3001\u7b80\u4fbf\u8fd0\u7b97\u7684\u6ce8\u610f\u4e8b\u9879\uff1a
1\u3001\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
2\u3001\u4e0d\u8981\u8d8a\u7ea7\u8fd0\u7b97\uff0c\u4ee5\u514d\u53d1\u751f\u8fd0\u7b97\u9519\u8bef\u3002
\u4e8c\u3001\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
4\u3001\u51cf\u6cd5\u7684\u6027\u8d28\uff1a\u4e00\u4e2a\u6570\u8fde\u7eed\u51cf\u53bb\u51e0\u4e2a\u6570\u7b49\u4e8e\u4e00\u4e2a\u6570\u51cf\u53bb\u8fd9\u51e0\u4e2a\u6570\u7684\u548c\u3002
\u5b57\u6bcd\u8868\u793a\uff1aa-b-b= a-\uff08b+c\uff09
5\u3001\u62c6\u5206\u6cd5\uff1a\u5f53\u4e00\u4e2a\u6570\u6bd4\u6574\u767e\u3001\u6574\u5343\u7a0d\u5fae\u5927\u4e00\u4e9b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u8fd9\u4e2a\u6570\u62c6\u5206\u6210\u6574\u767e\u3001\u6574\u5343\u4e0e\u4e00\u4e2a\u8f83\u5c0f\u6570\u7684\u548c\uff0c\u7136\u540e\u5229\u7528\u52a0\u51cf\u6cd5\u7684\u4ea4\u6362\u3001\u7ed3\u5408\u5f8b\u8fdb\u884c\u7b80\u4fbf\u8ba1\u7b97\u3002
6\u3001\u51d1\u6574\u6cd5\uff1a\u5f53\u4e00\u4e2a\u6570\u6bd4\u6574\u767e\u3001\u6574\u5343\u7a0d\u5fae\u5c0f\u4e00\u4e9b\u7684\u65f6\u5019\uff0c\u6211\u4eec\u53ef\u4ee5\u628a\u8fd9\u4e2a\u6570\u5199\u6210\u4e00\u4e2a\u6574\u767e\u3001\u6574\u5343\u7684\u6570\u51cf\u53bb\u4e00\u4e2a\u8f83\u5c0f\u7684\u6570\u7684\u5f62\u5f0f\uff0c\u7136\u540e\u5229\u7528\u52a0\u51cf\u6cd5\u7684\u8fd0\u7b97\u5b9a\u5f8b\u8fdb\u884c\u7b80\u4fbf\u8ba1\u7b97\u3002
\u6ce8\u610f\uff1a\u62c6\u5206\u51d1\u6574\u6cd5\u5728\u52a0\u3001\u51cf\u6cd5\u4e2d\u7684\u7b80\u4fbf\u4e0d\u662f\u5f88\u660e\u663e\uff0c\u4f46\u548c\u4e58\u9664\u6cd5\u7684\u8fd0\u7b97\u5b9a\u5f8b\u7ed3\u5408\u8d77\u6765\u5c31\u5177\u6709\u5f88\u5927\u7684\u7b80\u4fbf\u3002
7\u3001\u52a0\u62ec\u53f7\u6cd5
\u5f53\u4e00\u4e2a\u8ba1\u7b97\u9898\u53ea\u6709\u52a0\u51cf\u8fd0\u7b97\u53c8\u6ca1\u6709\u62ec\u53f7\u65f6\uff0c\u53ef\u4ee5\u5728\u52a0\u53f7\u540e\u9762\u76f4\u63a5\u6dfb\u62ec\u53f7\uff0c\u62ec\u5230\u62ec\u53f7\u91cc\u7684\u8fd0\u7b97\u539f\u6765\u662f\u52a0\u8fd8\u662f\u52a0\uff0c\u662f\u51cf\u8fd8\u662f\u51cf\u3002\u4f46\u662f\u5728\u51cf\u53f7\u540e\u9762\u6dfb\u62ec\u53f7\u65f6\uff0c\u62ec\u5230\u62ec\u53f7\u91cc\u7684\u8fd0\u7b97\uff0c\u539f\u6765\u662f\u52a0\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u51cf\uff1b\u539f\u6765\u662f\u51cf\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u52a0\u3002
\u5f53\u4e00\u4e2a\u8ba1\u7b97\u9898\u53ea\u6709\u4e58\u9664\u8fd0\u7b97\u53c8\u6ca1\u6709\u62ec\u53f7\u65f6\uff0c\u53ef\u4ee5\u5728\u4e58\u53f7\u540e\u9762\u76f4\u63a5\u6dfb\u62ec\u53f7\uff0c\u62ec\u5230\u62ec\u53f7\u91cc\u7684\u8fd0\u7b97\uff0c\u539f\u6765\u662f\u4e58\u8fd8\u662f\u4e58\uff0c\u662f\u9664\u8fd8\u662f\u9664\u3002\u4f46\u662f\u5728\u9664\u53f7\u540e\u9762\u6dfb\u62ec\u53f7\u65f6\uff0c\u62ec\u5230\u62ec\u53f7\u91cc\u7684\u8fd0\u7b97\uff0c\u539f\u6765\u662f\u4e58\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u9664\uff1b\u539f\u6765\u662f\u9664\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u4e58\u3002
8\u3001\u53bb\u62ec\u53f7\u6cd5
\u5f53\u4e00\u4e2a\u8ba1\u7b97\u9898\u53ea\u6709\u52a0\u51cf\u8fd0\u7b97\u53c8\u6709\u62ec\u53f7\u65f6\uff0c\u53ef\u4ee5\u5c06\u52a0\u53f7\u540e\u9762\u7684\u62ec\u53f7\u76f4\u63a5\u53bb\u6389\uff0c\u539f\u6765\u662f\u52a0\u73b0\u5728\u8fd8\u662f\u52a0\uff0c\u662f\u51cf\u8fd8\u662f\u51cf\u3002\u4f46\u662f\u5c06\u51cf\u53f7\u540e\u9762\u7684\u62ec\u53f7\u53bb\u6389\u65f6\uff0c\u539f\u6765\u62ec\u53f7\u91cc\u7684\u52a0\uff0c\u73b0\u5728\u8981\u53d8\u4e3a\u51cf\uff1b\u539f\u6765\u662f\u51cf\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u52a0\u3002
\u5f53\u4e00\u4e2a\u8ba1\u7b97\u9898\u53ea\u6709\u4e58\u9664\u8fd0\u7b97\u53c8\u6709\u62ec\u53f7\u65f6\uff0c\u53ef\u4ee5\u5c06\u4e58\u53f7\u540e\u9762\u7684\u62ec\u53f7\u76f4\u63a5\u53bb\u6389\uff0c\u539f\u6765\u662f\u4e58\u8fd8\u662f\u4e58\uff0c\u662f\u9664\u8fd8\u662f\u9664\u3002\u4f46\u662f\u5c06\u9664\u53f7\u540e\u9762\u7684\u62ec\u53f7\u53bb\u6389\u65f6\uff0c\u539f\u6765\u62ec\u53f7\u91cc\u7684\u4e58\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u9664\uff1b\u539f\u6765\u662f\u9664\uff0c\u73b0\u5728\u5c31\u8981\u53d8\u4e3a\u4e58\u3002

\u4e00\u3001\u52a0\u6cd5
1.\u52a0\u6cd5\u4ea4\u6362\u5f8b
a+b=b+a
2.\u52a0\u6cd5\u7ed3\u5408\u5f8b
(a+b)+c=a+(b+c)
\u4e8c\u3001\u51cf\u6cd5
1.\u51cf\u6cd5\u7684\u6027\u8d28
a-b-c=a-(b+c)
\u4e09\u3001\u4e58\u6cd5
1.\u4e58\u6cd5\u4ea4\u6362\u5f8b
ab=ba
2.\u4e58\u6cd5\u7ed3\u5408\u5f8b
(axb)xc =ax(bxc)
3.\u4e58\u6cd5\u5206\u914d\u5f8b
[1].(a+b)xc=axc+bxc
[2].(a-b)xc=axc+bxc
[3].ax99=ax(99+1)-a
[4].(a+b-d)xc =axc+bxc-dxc
\u56db\u3001\u9664\u6cd5
1.\u9664\u6cd5\u7684\u6027\u8d28
a➗b➗c=a➗(bxc)
\u4e94\u3001\u52a0\u51cf\u6df7\u5408
a+(b-c)=a+b-c
a-(b-c)=a-b+c
a-(b+c)=a-b-c
1+2+3+...........+97+98+99+100
=50x100
=5050
19+199+1999+19999
=20+200+2000+20000-4
=22216

a➗(b➗C)
=a÷bxc
=ac/b

a鐨勫彂闊虫槸浠涔
绛旓細(9)涓嬪垪鎯呭喌涓嬶紝a鍙慬a:]鐨勯煶锛氣憼鍦╯涔嬪墠锛屼緥濡傦細class[kla:s] 锛実rass[gra:s]锛宖ast[fa:st] 锛宐asket[ˈba:skɪt]涔熸湁渚嬪锛屾瘮濡俬aste[heɪst]鍜宼aste[teɪst]锛屽彟澶杙assage鎸夌収閲嶈闂煶鑺傝鍒欒闊筹紝璇籟ˈpæsɪdʒ]銆傗憽鍦ㄢ渕锛弉+杈呴煶瀛楁瘝...

A鐨勯煶鏍囨槸浠涔
绛旓細A鐨勬媺涓佽鍙戦煶鏄/aː/銆佹硶璇彂闊虫槸/a/銆佷縿璇彂闊虫槸邪 [蓱]銆佸痉璇彂闊虫槸/aː/銆佽タ鐝墮璇彂闊虫槸/a/銆傝闊宠娉曟槸[a]鏄紑鍓嶄笉鍦嗗攪闊炽俒蓱]鏄紑鍚庝笉鍦嗗攪闊炽俒ɒ]鏄紑鍚庡渾鍞囬煶銆俒A]鏄寮澶笉鍦嗗攪闊炽侫鏄媺涓佸瓧姣嶏紙浠ヨ嫳璇瓧姣嶄负浠ｈ〃锛夎〃涓庤タ閲屽皵瀛楁瘝锛堜笌淇勮瀛楁瘝涓轰唬琛級琛...

鑻辫a鐨9绉嶅彂闊宠鍒欐槸浠涔?
绛旓細a鍦ㄨ嫳璇崟璇嶄腑鏈6绉嶅彂闊筹紝鍒嗗埆濡備笅锛氬彂闊筹細[æ] 鍗曡瘝涓句緥锛歛pple锛宐ack 鍙戦煶锛歔ei] 鍗曡瘝涓句緥锛欰pril锛宮ake 鍙戦煶锛歔ə] 鍗曡瘝涓句緥锛歛bility锛宎ffirm a鍦╗w]闊冲悗闈㈠彂闊筹細[ɒ] 鍗曡瘝涓句緥锛歸ant锛寃hat a鍦╢銆乶銆乻k銆乸h銆乻p銆乻s銆乻t銆乼h鍓嶅彂闊筹細[a:] 鍗曡瘝涓句緥锛歛fter锛宲lant ar闊...

a鎬庝箞鍐欑瑪椤
绛旓細1銆佹嫾闊成戜袱绗斿畬鎴愶細绗竴绗斿乏鍗婂渾锛岀浜岀瑪绔栧彸寮2銆a鑻辨枃鍐欐硶涓绗斿畬鎴愶紝鍐欏湪涓棿鐨勪竴鏍奸噷锛屼笂涓嬫姷绾匡紝浣嗛兘涓嶅嚭鏍笺傚涓嬫墍绀猴細26涓瓧涔﹀啓鐨勭瑪椤 瀛楁瘝瑕佹寜涓瀹氱殑绗斿垝椤哄簭涔﹀啓锛屽叾涔﹀啓绗旈『濡備笅銆傦紙璇锋敞鎰忎功鍐欑殑鏍煎紡鍜屽ぇ灏忓啓鐨勫尯鍒傦級閫氳繃涓婅〃锛屾垜浠彲浠ョ湅鍑猴紝鏈夌殑瀛楁瘝鏄竴绗斿畬鎴愶紝鑰屾湁鐨勬槸涓ょ瑪鎴...

姹夎鎷奸煶a鐨勭瑪鐢婚『搴
绛旓細姹夎鎷奸煶a绗旂敾椤哄簭濡備笅锛氳В鏋愶細姹夎鎷奸煶a涓鍏辨湁涓ょ瑪缁勬垚锛岀涓绗斿乏鍗婂渾锛岀浜岀瑪绔栧彸寮傛眽璇嫾闊冲叡鏈夊崄绉嶅熀鏈瑪鐢伙紝瀹冧滑鐨勫悕绉版槸锛氭í銆佺珫銆佸乏寮珫銆佸彸寮珫銆佺珫宸﹀集銆佺珫鍙冲集銆佸乏鍗婂渾銆佸彸鍗婂渾銆佸乏鏂溿佸彸鏂溿傝嫳鏂囧瓧姣峚鐨勫ぇ鍐欏垎3绗斿畬鎴愶紝灏忓啓1绗斿畬鎴愶紝鍏蜂綋绗旈『濡備笅锛...

a鍦ㄨ嫳璇崟璇嶄腑鏈夊嚑绉嶅彂闊
绛旓細瀛楁瘝a 鍦ㄩ潪閲嶈闊宠妭涓彂/ə/,渚嬪锛歛bility /əˈbɪləti/ n.鑳藉姏 abrupt /əˈbrʌpt/ adj.闄″抄鐨 address /əˈdres/ n.鍦板潃; ago /əˈgəʊ/ [əˈgoʊ] adv.浠ュ墠;arrest /...

鑻辨枃瀛楁瘝a鐨勫啓娉
绛旓細鑻辨枃瀛楁瘝a鐨勫啓娉曞涓嬪浘锛歛锛氭媺涓佸瓧姣嶏紙浠ヨ嫳璇瓧姣嶄负浠ｈ〃锛夎〃涓庤タ閲屽皵瀛楁瘝锛堜笌淇勮瀛楁瘝涓轰唬琛級琛ㄤ腑鐨勭涓涓瓧姣嶃傝繖涓瓧姣嶅湪寰堝棰嗗煙鍧囨湁搴旂敤锛屼唬琛ㄧ殑鍚箟鍚勪笉鐩稿悓锛屾瘮濡傚湪鐗╃悊涓〃绀虹數娴佸崟浣嶅畨鍩癸紝閬椾紶瀛︿腑绀鸿吅鍢屽懁锛屽瀛︾敓瀛︿笟鐨勮瘎浠蜂紭绉绛夌瓑銆傚湪鎺掑垪鐨勬椂鍊欙紝涔熶範鎯笂鎺掑湪鏈鍓嶏紝琛ㄧず绗竴涓紝鏄媺涓...

鑻辫涓湪浠涔堟儏鍐典笅浣跨敤a鍜宎n
绛旓細a鐢ㄤ簬杈呴煶鍓嶏紱an鐢ㄤ簬鍏冮煶鍓嶃傚厓闊冲瓧姣嶆槸鎸囪瑷閲岃捣鐫鍙戝０浣滅敤鐨勫瓧姣嶏紝鏄负鍏冮煶瀛楁瘝銆傚厓闊冲張浣溾滃厓闊斥濆湪鎷変竵瀛楁瘝涓紝A銆丒銆両銆丱銆乁閫氬父閮芥槸鍏冮煶瀛楁瘝. 杈呴煶瀛楁瘝鏄竴涓拰鍏冮煶瀛楁瘝鐩稿鐨勬潯鐩,鎵鏈夐潪鍏冮煶瀛楁瘝鐨勶紝灏辨槸杈呴煶瀛楁瘝.闊崇礌锛氫汉璇磋瘽鐨勫０闊虫槸鐢辫嫢骞插崟涓殑闊崇粍鎴愮殑锛屽嵆浣挎槸涓涓緢鐭殑瀛椼佽瘝涔熸槸...

a鎬庝箞鍐欑瑪椤?
绛旓細a涓鍏辨湁涓ょ瑪锛屽厛鍐欎竴涓渾锛涘湪鍐欎竴涓珫锛岀暐甯︿竴涓皬灏惧反銆俛鏄眽璇嫾闊崇殑涓涓厓闊抽煶绱狅紝鍙堢О闊垫瘝锛屽悓鏃跺彲浠ヨ嚜鎴愪竴涓煶鑺傘傛牴鎹煹姣嶅懡鍚嶅師鍒欙紝a鐨勪笓涓氬悕绉版槸鈥滆垖闈㈠ぎ浣庝笉鍦嗗攪鍏冮煶鈥濓紝鍚嶇О浠ｈ〃鐫鍙戦煶鏃剁殑鏍囧噯鑸屼綅鍜屽攪褰

鎷奸煶鈥 a鈥濆拰鈥 a鈥濇庢牱鍖哄垎?
绛旓細鍖哄垎濡備笅鍥撅細鎷奸煶"a"鐨勬墜鍐欑瑪椤烘槸锛氱涓绗斿乏鍗婂渾锛岀浜岀瑪绔栧彸寮1銆佸皬鍐櫸辩敤浜庣墿鐞嗗涓婅〃绀猴細瑙掑姞閫熷害锛涚簿缁嗙粨鏋勫父鏁般侫lpha绮掑瓙鍜岀浉鍏崇殑Alpha琛板彉銆2銆佸皬鍐櫸辩敤浜庡寲瀛︿笂琛ㄧず锛氱數瑙ｈ川鐨勭數绂诲害銆

扩展阅读：www.sony.com.cn ... 韩国macbookpro ... mac蜜桃奶茶314 ... 日本资生堂色谱柱 ... 国产377vc精华真能祛斑吗 ... matebook14 ... amazon欧洲站 ... bowers&wilkins官网 ... amazon日本 ...