66*107-7*66用简便方法 四年级下学期
66*107-7*68\u7528\u7b80\u4fbf\u65b9\u6cd5 \u56db\u5e74\u7ea7\u4e0b\u5b66\u671f=66*107-7*66-7*2
=66*\uff08107-7\uff09-14
=66*100-14
=6600-14
=6586
\u539f\u5f0f
=66\u00d7(100-1)
=6600-66
=6534
……这就更简单了啊 提出66就好了
=66*(107-7)=66*100=6600
提出66,
66×(107-7)
66*<107-7>=66*100=6600
绛旓細=66X锛107-7锛=66X100 =6600
绛旓細鎻愬嚭鍏洜鏁66
绛旓細绠渚璁$畻杩囩▼鏂规硶濡備笅 瑙o細66x107-33X14 =66x107-66x7 =66x(107-7)=6600
绛旓細=66*锛100+1锛=66*100+66*1-66 =66*100 =6600
绛旓細67x14+7x66 =67x14+7x2x33 =67x14+14x33 =锛67+33锛墄14 =100x14 =1400 璋㈣阿锛岃閲囩撼
绛旓細64x107-7x13 =64x(100+7)-7x13 =64x100+64x7-7x13 =6400+7x(64-13)=6400+7x51 =6400+357 =6757
绛旓細99*107-99*7 =99*{107-7} =99*100 =9900
绛旓細鍘熷紡 锛38脳锛107锛7锛夛紳38脳100 锛3800
绛旓細47脳107-26脳7鐨勭畝渚杩愮畻鏂规硶濡備笅鎵杩般47脳107-26脳7 =47脳100+47脳7-26脳7 =47脳100+(47脳7-26脳7)=4700+(47-26)脳7 =4700+21脳7 =4700+147 =4847 浠ヤ笂灏辨槸杩欓亾棰樼殑绠渚胯繍绠楁柟娉曪紝涓昏鐢ㄤ簡鍔犳硶鐨勫垎閰嶇巼銆
绛旓細66*101-66 =66*锛101-1锛=66*100 =6600 杩欐槸鍒╃敤涔樻硶鍒嗛厤寰鐨勭畝渚鏂规硶杩涜璁$畻鐨