2、4、6、15、3,用加减乘除小括号,有哪些方法可以等于21? 3,4,-6,10,使用加减乘除括号写出三种方法的运算式,使...
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10+(-6)+4=8,8*3=24
3*(-6)=-18,10-4-(-18)=24
10*(-6)/3=-20,4-(-20)=24
(15-6-4÷2)×3=21
2+4×6-15÷3=21
(2+3-4)×6+15=21
15÷(3-4÷2)+6=21
(6-3)×4÷2+15=21
(4-2)×(6-3)+15=21
绛旓細(3+3-3)梅3=1 3梅3+3梅3=2 3脳3-3-3=3 (3+3脳3)梅3=4 3+3-3梅3=5 3+3-3+3=6 3梅3+3+3=7 3脳3-3梅3=8
绛旓細2-((-3*6)-4)(2-(-3*6))+4 2*((-3+6)*4)(2*(-3+6))*4 (4-(2*6))*-3 4+(2-(6*-3))(4+2)-(6*-3)4*(2*(6+-3))(4*2)*(6+-3)4+(2-(-3*6))(4+2)-(-3*6)4*(2*(-3+6))(4*2)*(-3+6)(4-(6*2))*-3 4*((6/2)--3)4-((6*...
绛旓細鍥炵瓟锛氬憙 5*6-2-4=24
绛旓細锛5-3+2锛*6=4*6=24 6/2*锛3+5锛=3*8=24 5*6-2*3=30-6=24
绛旓細鍏辨湁21涓畻寮忥細1*23-4+56=75 1*(23-4)+56=75 1*(23-4+56)=75 1*23-(4-56)=75 1*(23-(4-56))=75 1+23+45+6=75 12+3+4+56=75 12*3+45-6=75 (12+3)*(4-5+6)=75 (12+3)*(4-(5-6))=75 (12-3)*(4+5)-6=75 12*(3/4+5)+6=75 1+2+(3+4+5...
绛旓細4466浠鐢ㄥ姞鍑忎箻闄ゆ棤娉曞緱鍒24銆傚鏋滀娇鐢ㄦ牴鍙峰彲浠ュ疄鐜般傦紙4-鈭4锛塜锛6+6锛=24銆傦紙4梅鈭4锛塜锛6+6锛=24銆傚畾涔 鍔犳硶锛氭妸涓や釜鏁板悎骞舵垚涓涓暟鐨勮繍绠椼傚噺娉曪細鍦ㄥ凡鐭ヤ袱涓姞鏁扮殑鍜屼笌鍏朵腑鐨勪竴涓姞鏁帮紝姹傚彟涓涓姞鏁扮殑杩愮畻銆備箻娉曪細姹備袱涓暟涔樼Н鐨勮繍绠椼(1)涓涓暟涔樻暣鏁帮紝鏄眰鍑犱釜鐩稿悓鍔犳暟鍜岀殑绠渚...
绛旓細1:6 脳 (5 梅 5 + 3)2:6 脳 ((5 梅 5) + 3)3:6 脳 (3 + 5 梅 5)4:6 脳 (3 + (5 梅 5))5:(5 + 5) 脳 3 - 66:((5 + 5) 脳 3) - 67:(5 梅 5 + 3) 脳 68:((5 梅 5) + 3) 脳 69:(3 + 5 梅 5) 脳 610:(3 + (5 梅 5)) 脳 61...
绛旓細1+2+3-4-5+6=3 (4+5+6)梅(1脳2+3)=3 (4+5+6)梅(2+3脳1)=3 (4脳1+5+6)梅(2+3)=3 (4+5脳1+6)梅(2+3)=3 (4+5+6脳1)梅(2+3)=3 ... ...1脳(2锛3锛4)锛5锛6锛12 1锛2锛3锛(5锛4)脳6锛12 1脳3锛2锛4锛5锛6锛12 渚嬪锛1銆+2+3-4+5-6+...
绛旓細3 9 11 12 3脳(9+11-12)=24 (11-3)脳(12-9)=24 9+11+12梅3=24 4 10 10 11 4脳11-10-10=24 1 2 8 10 2脳(8-1)+10=24 1 4 6 10 10脳(4-1)-6=24 1 9 11 13 (13-11)脳(9-1)=24 2 8 10 11 (10-8)脳11+2=24 (11-10+2)脳8=24 8+11+10梅2=24...
绛旓細锛-1-2-3锛+4*5+6=20-1+(2+3)*4-5+6=20鍏跺疄鍙鍑戝嚭4*5=20鐒跺悗鍏跺畠鍑犱釜鏁鐩稿姞鍑涓0灏卞ソ浜 杩欐槸涓绉嶆柟娉