265×105-265×5四年级简便算法 265×105-265×5 简便计算
265\u00d7105-265\u00d75\u7684\u7b80\u4fbf\u8ba1\u7b97\uff1f \u6025\u6025\u6025\uff01\uff01\u60a8\u597d\uff1a
265\u00d7105-265\u00d75
=265x\uff08105-5\uff09
=265x100
=26500
\u5f88\u9ad8\u5174\u4e3a\u60a8\u89e3\u7b54\uff0c\u795d\u4f60\u5b66\u4e60\u8fdb\u6b65\uff01\u3010\u5b66\u4e60\u5b9d\u5178\u3011\u56e2\u961f\u4e3a\u60a8\u7b54\u9898\u3002
\u6709\u4e0d\u660e\u767d\u7684\u53ef\u4ee5\u8ffd\u95ee\uff01\u5982\u679c\u60a8\u8ba4\u53ef\u6211\u7684\u56de\u7b54\u3002
\u8bf7\u70b9\u51fb\u4e0b\u9762\u7684\u3010\u9009\u4e3a\u6ee1\u610f\u56de\u7b54\u3011\u6309\u94ae\uff0c\u8c22\u8c22\uff01
\u5982\u679c\u6709\u5176\u4ed6\u9700\u8981\u5e2e\u52a9\u7684\u9898\u76ee\uff0c\u60a8\u53ef\u4ee5\u6c42\u52a9\u6211\u3002\u8c22\u8c22\uff01\uff01
265\u00d7105\uff0d265\u00d75 \u7b80\u4fbf\u8ba1\u7b97
265x(105-5)
=265x100
=26500
265×105-265×5
=(105-5)×265
=100×265
=26500
原式
=265x(105-5)
=265x100
=26500
供参考。
因为两个乘式中都有265,所以运用乘法分配律逆运算,提取公因数265。
可以得到原式等于265×(105-5)=265×100=26500。
=265(105-5)=26500
绛旓細鎮ㄥソ锛265脳105-265脳5 =265x锛105-5锛=265x100 =26500 寰堥珮鍏翠负鎮ㄨВ绛旓紝绁濅綘瀛︿範杩涙锛併愬涔犲疂鍏搞戝洟闃熶负鎮ㄧ瓟棰樸傛湁涓嶆槑鐧界殑鍙互杩介棶锛佸鏋滄偍璁ゅ彲鎴戠殑鍥炵瓟銆傝鐐瑰嚮涓嬮潰鐨勩愰変负婊℃剰鍥炵瓟銆戞寜閽紝璋㈣阿锛佸鏋滄湁鍏朵粬闇瑕佸府鍔╃殑棰樼洰锛屾偍鍙互姹傚姪鎴戙傝阿璋紒锛
绛旓細鍥炵瓟锛265脳105-265x5 =265脳(105-5) =265脳100 =26500
绛旓細265脳105锛265脳5 绠渚胯绠 265x(105-5)=265x100 =26500
绛旓細瑙傚療鍙互鐪嬪嚭锛屾彁鍙栫浉鍚岀殑265锛岃繍绠楁瘮杈冪畝鍗曪細265脳105-265脳5 =265脳锛105-5锛=265脳100 =26500
绛旓細=265脳(105-5)=265脳100=26500
绛旓細265x105-265x5 =265x(105-5)=265x100 =26500
绛旓細265x105涓265x5 锛265x(105-5)=265x100 =26500 甯屾湜甯埌浣 鏈涢噰绾 璋㈣阿 鍔犳补
绛旓細265脳(100-5)=265脳100 =26500
绛旓細姝g‘璇烽噰绾筹紝璋㈣阿锛
绛旓細鍒╃敤涔樻硶鍒嗛厤鐜囷紝鍘熷紡=256脳100+256脳5-265脳5=256脳100-锛265-256锛壝5=25600-9脳5=25555