一堆黄沙用了八分之三还剩四吨运了多少吨先画图表示条件和问题再解答? 一堆沙子有两吨,第一次用去八分之三吨,第二次用去四百千克,还...
\u4e00\u5428\u9ec4\u6c99\u7528\u4e86\u516b\u5206\u4e4b\u4e09\u8fd8\u5269\u56db\u5341\u5428\u7528\u4e86\u591a\u5c11\u5428\u5148\u753b\u56fe\u8868\u793a\u6761\u4ef6\u548c\u95ee\u9898\u518d\u89e3\u7b54\uff1f40\u00f7\uff081-3/8\uff09=64\u5428
64\u00d73/8=24
\u4e00\u5806\u9ec4\u6c99\u7528\u4e86\u516b\u5206\u4e4b\u4e09\uff0c\u8fd8\u5269\u4e0b\u56db\u5341\u5428\uff0c\u7528\u53bb\u4e8624 \u5428\u3002aqui te amo\u3002
2-3/8-0.4
=2-0.375-0.4
=1.225\u5428
=1225\u5343\u514b
绛旓細杩鍫娌欏瓙x鍚 3x/8+(1-3/8)*x/5+6+14=x x=40 杩欏爢娌欏瓙40鍚
绛旓細鍋囧杩欎釜娌欏瓙鏈塜鍚 绗竴棰橈細杩愯蛋鍏垎涔嬩簲,灏辨槸5/8x,鍓╀笅鐨勫氨鏄3/8x,鍏垎涔嬩簲鎬庝箞浼氭瘮鍓╀笅鐨鍏垎涔嬩笁澶3/4x.绗簩棰,x-5/8+3/4x=5/8 X=4/7 4/7-5/8
绛旓細涓婂崍杩3/8t,涓嬪崍杩3/8-1/4=1/8t 鍏ㄥぉ3/8+1/8=1/2t
绛旓細1,鍥鍒嗕箣涓=0.75 浜斿垎涔嬩簩=0.4 0.75>0.4 灏忔潕鏁堢巼楂 2,涓鍏辩敤鍘 =2/5+3/8 =31/40 杩鍫嗛粍娌鍘熸湁 =31/40+1/10 =35/40 =7/8
绛旓細4/5+3/8+7/10 锛32/40+15/40+28/40 锛75/40 锛15/8鍚
绛旓細24脳鍏垎涔嬩笁锛24脳浜斿垎涔嬩竴锛3+鍥涘張浜斿垎涔嬪洓锛濅竷鍙堜簲鍒嗕箣鍥涘惃
绛旓細3/4x3/8=9/32鍚
绛旓細16.瀹濅附鐢佃鏈哄巶涓婂崐骞寸敓浜т簡35400鍙扮數瑙嗘満锛屾濂藉畬鎴愬叏骞磋鍒掔殑浜鍒嗕箣涓锛屽叏骞磋鍒掔敓浜у灏戝彴鐢佃鏈猴紵17.鍏竴鐝湁21浜猴紝濂崇敓姣旂敺鐢熷皯涓冨垎涔嬩竴锛屽コ鐢熸湁澶氬皯浜猴紵18.涓鍫嗛粍娌锛岀敳瑕佽繍15娆¤繍瀹岋紝涔欒杩10娆¤繍瀹岋紝濡傛灉涓よ溅涓榻愯繍锛屽嚑娆″彲浠ヨ繍瀹岋紵19.鐜嬭佸笀鍥涙湀浠戒粠宸ヤ綔鍗曚綅棰嗗埌褰撴湀宸ヨ祫1200鍏冿紝鎸夌収...
绛旓細涓鍏=2/5+3/8+1/10=7/8鍚
绛旓細宸ュ湴涓婃湁鍫嗛粍娌閲嶄簲鍒嗕箣鍗佷簩鍚紝绗竴娆$敤鍘诲洓鍒嗕箣涓锛岀浜屾鐢ㄥ幓绗竴娆$殑鍏垎涔浜旓紝绗簩娆$敤鍘诲灏戝惃锛12/5脳3/4脳5/8 =9/5脳5/8 =9/8鍚