5分之2x3分之1等于。画图
1+2x3-4\u9664\u4ee55\u600e\u4e48\u7b49\u4e8e1\u8fd9\u6837\u7684\uff1a\uff08\uff081+2\uff09*3-4\uff09/5 \u5c31\u7b49\u4e8e1\u4e86\u3002
\u53ef\u4ee5\u628a\u54e5\u54e5\u548c\u59b9\u59b9\u7684\u8eab\u9ad8\u5728\u65c1\u8fb9\u6807\u51fa\u6765\uff0c\u4e5f\u53ef\u4ee5\u628a\u4ed6\u4eec\u5207\u788e\u3002\u3002\u3002\u3002\u3002\u3002\u4ea7\u91cf\u7684\u90a3\u4e2a\u5c31\u753b\u7edf\u8ba1\u8868\u3002
2/5 x 1/3 (= 2x1 / 5x3)= 2/15
3/5×1/3=3×1/5×3=
1/5
绛旓細闈㈢Н 5/2x(5/2x1/2)=5/2x5/4=25/8骞虫柟绫
绛旓細2 4 涓 X 2 = 涓 7 7
绛旓細1锛2绫硏4锛5锛4锛10绫筹紳2锛5绫筹紳0.4绫炽
绛旓細杩欏氨闇瑕佺敤鍒版蹇电殑闂锛屼簩鍒嗕箣涓涔樺洓鍒嗕箣涓鐨勫紡瀛愩傚弬鑰冨涓嬶細
绛旓細瑙ｏ細璁捐嫻鏋滄湁x绠憋紝姊ㄦ湁3鍒嗕箣2x绠憋紝3鍒嗕箣2x+x=603鍒嗕箣5x=60x=60梅3鍒嗕箣5x=60脳5鍒嗕箣3x=36姊ㄧ殑绠辨暟=3鍒嗕箣2x=3鍒嗕箣2脳36=24绠辩瓟锛氳嫻鏋滄湁36绠憋紝姊ㄦ湁24绠便
绛旓細鍗佸洓鍒嗕箣涓涔樹簬鍏垎涔嬩竷 =3/14x7/6 =1/14x7/2 =1/2x1/2 =1/4 =4鍒嗕箣1 鏈嬪弸,璇峰強鏃堕噰绾虫纭瓟妗,涓嬫杩樺彲鑳藉府鍒版偍鍝,鎮ㄩ噰绾虫纭瓟妗,鎮ㄤ篃鍙互寰楀埌璐㈠瘜鍊,璋㈣阿銆
绛旓細涓鏍圭怀瀛愰暱4/5绫筹紝鍓帀浠栫殑1/4,涔熷氨鏄墿涓1-1/4=3/4,鎵浠ョ涓涓┖鏄4/5*3/4=3/5绫 鍓帀瀹冪殑1/4绫,灏辨槸4/5-1/4=16/20-5/20=11/20绫 鐢诲浘鐨勯偅涓暱鏂瑰舰娌＄粰,涓嶈繃澶ц嚧鎬濊矾 1/2X1/4 鍙互鎯宠薄鎴愪竴涓暱涓1/2,瀹戒负1/4鐨勯暱鏂瑰舰,鍦ㄧ粰鍑虹殑闀挎柟褰腑鎶婂畠琛ㄧず鍑烘潵灏卞彲浠ヤ簡 4 4/...
绛旓細鍥:
绛旓細璇佹槑锛氫护姝ｆ柟褰BCD鐨勮竟闀夸负鈥1鈥濆洜涓 E鏄鏂瑰舰ABCD杈圭殑涓偣锛屼笖CF=1/4CD 鎵浠 BE=CE =1/2锛孋F=1/4锛孌F=3/4 鍥犱负 AE鐨勫钩鏂=AB鐨勫钩鏂+BE鐨勫钩鏂=5/4锛孍F鐨勫钩鏂=CE鐨勫钩鏂+CF鐨勫钩鏂=5/16 鍙堝洜涓 AF鐨勫钩鏂=AD鐨勫钩鏂+DF鐨勫钩鏂=25/16 鎵浠 5/4+5/16=25/16 鎵浠ュ湪涓夎褰EF涓紝AE...
绛旓細濡傚浘鎵绀猴紝涓ぎ闃村奖閮ㄥ垎鐨勯潰绉瓑浜庢暣涓暱鏂瑰舰鐨勯潰绉噺鍘荤敳涔欎笝涓涓笁瑙掑舰鐨勯潰绉傝闀挎柟褰㈢殑闀夸笌瀹藉垎鍒槸a鍜宐銆傞潰绉槸ab=96骞虫柟鍘樼背 鍒欎笁瑙掑舰鐢茬殑闈㈢Н鏄細1/2X1/2ax2/3b=1/6ab=1/6X96骞虫柟鍘樼背=16骞虫柟鍘樼背锛涗笁瑙掑舰涔欑殑闈㈢Н鏄細1/2X1/2axb=1/4ab=1/4X96骞虫柟鍘樼背=24骞虫柟鍘樼背;涓夎褰笝鐨...
