72×78+36×44等于多少巧算？ 36×44+72×78的简便方法
72x78\u534136\u00d744\u600e\u4e48\u5de7\u7b97\uff1f\u7b49\u4e8e36\u00d7156+36\u00d744=36\u00d7\uff08156+44\uff09=36\u00d7200=7200
\u6240\u4ee5\u7ed3\u679c\u7b49\u4e8e7200
36\u00d744+72\u00d778
=72\u00d722+72\u00d778
=72\u00d7\uff0822+78\uff09
=72\u00d7100
=7200
=72×(78+22)
=72×100
=7200
这道题目乍一看他们的公因数不明显，但是需要知道的是72等于36x2。那么这就可以计算出它们的公因数是72。一提取出来，那么计算就简单了。
72×78+36×44等于多少巧算？
=72×(78+22)
=72×100
=7200
72×78+36×44
=72×78+36×(2×22)
=72×78+(36×2)×22
=72×78+72×22
=72×(78+22)
=72×100
=7200
绛旓細23*78+36*46 =23*78+36*2*23 =23*78+72*23 =23*锛78+72锛=23*150 =23*100+23*50 =2300+1150 =3450
绛旓細锛1锛62脳78=4836 锛2锛75脳36=2700 锛3锛52脳15=780 锛4锛93脳40=3720
绛旓細36脳36绔栧紡璁＄畻锛氫箻娉曠珫寮忚绠楄娉ㄦ剰闂锛氫袱涓暟鐨勬渶鍚庝竴浣嶈瀵归綈銆傚敖閲忔妸鏁板瓧澶氱殑鏁板啓鍦ㄤ笂闈紝鏁板瓧灏戠殑鏁板啓鍦ㄤ笅闈紝浠ュ噺灏戜箻鐨勬鏁般
绛旓細1. 棣栧厛锛屽皢78鍜36杩涜绔栧紡鎺掑垪锛岀‘淇濇瘡涓浣嶅榻愩2. 浠庝釜浣嶆暟寮濮嬬浉涔橈紝8涔樹互6绛変簬48锛屽皢8鍐欏湪涓綅鐨勭粨鏋滀笅鏂癸紝4杩涗綅鍒板崄浣嶃3. 鎺ョ潃锛屽皢7涔樹互6锛屽緱鍒42锛屽姞涓婅繘浣嶇殑4锛屽緱鍒46锛屽皢6鍐欏湪鍗佷綅鐨勭粨鏋滀笅鏂癸紝4鍐嶆杩涗綅鍒扮櫨浣嶃4. 鐒跺悗锛屽鐞嗗崄浣嶆暟锛3涔樹互78锛屽緱鍒2340锛屽姞涓婁箣鍓嶈繘浣嶇殑4锛屽緱鍒...
绛旓細鍏堝榻愬垪寮忋78脳36锛屽厛瀵归綈鍒楀紡锛屼釜浣嶄箻涓綅锛屽崄浣嶄箻鍗佷綅锛岄鍏堟槸涓綅8鍜6鐩镐箻寰48锛岃8锛6鍐嶅拰7鐩镐箻寰42锛屽姞涓4锛岃涓46銆傚崄浣嶇殑3涓78鐩镐箻寰2340锛2340鍔468绛変簬2808锛屾墍浠ワ紝78脳36绛変簬2808銆
绛旓細23脳78+36脳46 =23脳78+36脳锛2脳23锛=23脳78+锛36脳2锛壝23 =23脳78+72脳23 =23脳锛78+72锛=23脳150 =3450
绛旓細78脳67=522636脳52=1872910梅70=13450梅60=7鈥30
绛旓細浣犲ソ鏈嬪弸锛屾牴鎹綘鐨勬弿杩 38脳46=1748 绔栧紡璁＄畻濡備笅鍥
绛旓細78x36鍗72x61 =78x36鍗36x2x61 =36x(78鍗122)=36x(78鍗22鍗100)=36鈪200 =7200
绛旓細2銆佸ご鐩稿悓锛屽熬浜掕ˉ(灏剧浉鍔绛変簬10)锛氬彛璇锛氫竴涓ご鍔1鍚庯紝澶翠箻澶达紝灏句箻灏俱備緥锛23脳27=锛熻В锛2锛1锛32脳3锛63脳7锛21 23脳27=621 娉細涓綅鐩镐箻锛屼笉澶熶袱浣嶆暟瑕佺敤0鍗犱綅銆3銆佺涓涓箻鏁颁簰琛ワ紝鍙︿竴涓箻鏁版暟瀛楃浉鍚岋細鍙ｈ瘈锛氫竴涓ご鍔1鍚庯紝澶翠箻澶达紝灏句箻灏俱備緥锛37脳44=锛熻В锛3+1=4 4脳4=16 7...
