288÷8-120÷8简便运算? 280÷8 +120÷8简便计算?
288\u00f78\uff0d120\u00f78\u7b80\u4fbf\u8fd0\u7b97288\u00f78=288\u00d71/8 \u540c\u7406:
288\u00d71/8-120\u00d71/8
=1/8\u00d7\uff08288-120\uff09
=1/8\u00d7168
=21
\u7b80\u4fbf\u8ba1\u7b97
280\u00f78 +120\u00f78
=\uff08280+120\uff09\u00f78
=400\u00f78
=50
解:
原式=288÷8-120÷8
=(288-120)÷8
=168÷8
=21
简便计算
288÷8-120÷8
=(288-12)÷8
=168÷8
=21
原式可化为:
288/8一120/8
二(288一120)/8
二168/8
二21
=(288-120)除8
=168除8
=21
绛旓細鏈鍚庯紝鍦ㄧ粨鏋滅殑宸︿晶鍐欎笅3锛屽彸渚у啓涓0锛屽緱鍒1620銆傛妸闄ゆ硶杞崲涓轰箻娉曪細鏈夋椂锛屽皢闄ゆ硶闂杞崲涓轰箻娉曢棶棰樺彲浠ユ洿瀹规槗鍦拌В鍐炽備緥濡傦紝璁$畻48梅6锛屽彲浠ヨ浆鎹负48脳(1/6)锛岀劧鍚庡皢鍒嗘暟杞崲涓哄皬鏁帮紝鍗48脳0.1666鈮8銆傚埄鐢ㄦ暟瀛楃殑鐗圭偣锛氭暟瀛楁湁涓浜涚壒娈婄殑灞炴э紝渚嬪锛屼袱涓伓鏁扮浉涔樼殑绉负鍋舵暟锛屼袱涓鏁扮浉涔樼殑绉负...
绛旓細288梅8-120梅60=36-2=34(绫/绉) 18銆佷竴鍒楃伀杞﹂暱600绫,瀹冧互姣忕10绫崇殑閫熷害绌胯繃闀200绫崇殑闅ч亾,浠庤溅澶磋繘鍏ラ毀閬撳埌杞﹀熬绂诲紑闅ч亾鍏遍渶澶氬皯鏃堕棿? (600+200)梅10=80(绉) 19銆佸皬鏄庝笂鍗8鏃堕獞鑷杞︿互姣忓皬鏃12鍗冪背鐨勯熷害浠嶢鍦板埌B鍦,灏忓己涓婂崍8鏃40鍒嗛獞鑷杞︿互姣忓皬鏃16鍗冪背鐨勯熷害浠嶣鍦板埌A鍦,涓や汉鍦ˋ銆丅涓ゅ湴鐨...
绛旓細(360+120)梅8 =360梅8+120梅8 =45+15 =60銆(203鈥63)梅7 =203梅7鈥63梅7 =29鈥9 =20銆
绛旓細10銆552梅69脳8 11銆600-120梅10 12銆(600-120)梅1013銆(466-25脳4)梅6 14銆(43+32)梅(357-352)15銆138+(27+48)梅25 16銆56脳19+25脳8浜屻佺敤绠渚挎柟娉曡绠銆1銆368+2649+1351 2銆 89+101+1113銆24+127+476+573 4銆400-273-1275銆327+(96-127) 6銆72脳987銆442-103-142 8銆999+...
绛旓細28脳15-120梅5寮鎬庢牱绠渚 =28x5x3-24 =140x3-24 =420-24 =396
绛旓細120梅8+6脳123 =15+738 =753
绛旓細350梅[(120-80)梅8]=350闄や互[40闄や互8]=350闄や互5 =70 鐩存帴绠鏈绠渚
绛旓細720梅24+120脳8 =720梅8梅3+960 =90梅3+960 =30+960 =990
绛旓細闄ゆ硶鍙互瀵瑰垎瀛愮敤鍒嗛厤寰嬶紝涓嶈兘瀵瑰垎姣嶇敤鍒嗛厤寰嬨傛墍浠 480梅(140锛960梅8)=480梅(140锛120)=480梅20 =24
绛旓細=480梅锛144-120锛=480梅24 =20 锛岋紝