1.25脳4脳20的简便运算 1.25脳2.5脳6.4简便

-(1.25)\u8133(-4/3)\u8133( 1/2)

\u5316\u5c0f\u6570\u4e3a\u5206\u6570\uff1a
-1.25\u00d7(-4/3)\u00d71/2
=5/4\u00d74/3\u00d71/2
=5/6\u3002

1.25\u81332.5\u81336.4\u7b80\u4fbf
1.25\u81332.5\u81336.4
=1.25*8*(2.5*0.4*2)
=10*2
=20

1.25脳4脳20的简便运算
1.25脳4脳20
=1.25*（4*20）
=1.25*80
=100

1.25鑴4鑴20鐨勭畝渚胯繍绠
绛旓細1.25鑴4鑴20 =1.25*锛4*20锛=1.25*80 =100

绠渚胯繍绠24脳1.25
绛旓細24脳1.25 锛3脳锛8脳1.25锛夛紳3脳10 锛30 鍦ㄦ暟鐨勮繍绠椾腑锛鏈夊姞锛+锛夈佸噺锛-锛夈佷箻锛埫楋級銆侀櫎锛埫凤級鍥涚杩愮畻锛屾垜浠湪鏁板涓婂張涓轰簡鑳芥洿绠渚胯绠楀畠浠紝绠绉扮О浣滅畝绠椼

绠渚胯繍绠
绛旓細鍘熻瘯=1.1脳4脳2.5脳1.25 =(1.1脳2.5)脳(4脳2.51.25) 鍓嶄竴涓嫭鍙烽噰鐢ㄦ眽鍫″寘绠楁硶鐩存帴鍐欑瓟妗 =2.75脳5 =2.75脳10梅2 =13.75 杩介棶 鍛靛懙,棰樼洰閮芥悶閿欎簡 璇勮 | 2013-10-12 17:40 cai1356609984 | 鏉ヨ嚜鎵嬫満鐭ラ亾 | 浜岀骇 13.75 璇勮 | 绠渚胯繍绠鐨勭浉鍏崇煡璇...

1.25鑴3.2鑴25 鎬庝箞绠渚胯繍绠
绛旓細=锛1.25脳8锛壝楋紙0.4脳25锛=10脳10 =100

鍒嗘暟鐨勭畝渚胯繍绠: 1.1.25X10鍙3/5+3闄や互4/5+1.64X12.5+10X1鍙1/4 2.
绛旓細1.25X10鍙3/5+3闄や互4/5+1.64X12.5+10X1鍙1/4 =1.25X(10+3/5)+3梅(4/5)+1.64X12.5+10X(1+1/4)=1.25X10.6+3X1.25+16.4X1.25+10X1.25 =1.25X(10.6+3+16.4+10)=1.25X40 =1.25X4X10 =5X10 =50

1.25脳4脳0.25鐨勭畝渚胯繍绠?
绛旓細宸绠1.25脳4脳0.25 瑙ｉ鎬濊矾:涓嶈兘杩涜绠渚胯繍绠鐨勬寜椤哄簭璁＄畻,绠渚胯繍绠楁牳蹇冩槸杩愮敤鍔犳硶鍜屼箻娉曞悇绉嶅畾寰嬭繘琛岃绠,璁＄畻鍑烘暣鏁伴儴鍒嗘柟渚垮悗缁绠楃殑杩囩▼ 瑙ｉ杩囩▼:1.25脳4脳0.25 =1.25脳锛4脳0.25锛=1.25脳1 =1.25 瀛樼枒璇疯拷闂,婊℃剰璇烽噰绾

2.4X1.25鐨勭畝渚胯繍绠鎬庝箞鍐
绛旓細2.4X1.25=0.3*8*1.25=0.3*10=3

1.25鑴2.5鑴6.4绠渚
绛旓細1.25鑴2.5鑴6.4绠渚 1.25鑴2.5鑴6.4 =1.25*8*(2.5*0.4*2)=10*2 =20

1.25鑴48鑴0.25绠渚胯绠
绛旓細1.25x32x0.25 =1.25x8x4x0.25 =10x1 =10

1.25x2.5x32绠渚胯绠
绛旓細1.25脳2.5脳32鐨勭畝渚胯繍绠姝ラ濡備笅锛1.25脳2.5脳32=1.25脳2.5脳4脳8=1.25脳8脳2.5脳4=10脳10=100銆傜畝渚胯绠楁槸涓绉嶇壒娈婄殑璁＄畻锛屽畠杩愮敤浜嗚繍绠楀畾寰嬩笌鏁板瓧鐨勫熀鏈ц川锛屼粠鑰屼娇璁＄畻绠渚銆傚浣曡繘琛岀畝渚胯繍绠1銆佸埄鐢ㄨ繍绠楀畾寰嬨傚埄鐢ㄥ姞娉曠殑浜ゆ崲寰嬪拰缁撳悎寰嬶紝涔樻硶鐨勪氦鎹㈠緥銆佺粨鍚堝緥鍜屽垎閰嶅緥锛屽彲浠ヤ娇璁＄畻...

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