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1、+算24点的技巧“巧算24点”是一种数学游戏,游戏方式简单易学,能健脑益智,是一项极为有益的活动 “巧算24点”的游戏内容如下:一副牌中抽去大小王剩下52张,(如果初练也可只用110这40张牌)任意抽取4张牌(称牌组),用加、减、乘、除(可加括号)把牌面上的数算成24每张牌必须用一次且只能用一次,如抽出的牌是3、8、8、9,那么算式为(98)83或38(98)或(988)3等 “算24点”作为一种扑克牌智力游戏,还应注意计算中的技巧问题计算时,我们不可能把牌面上的4个数的不同组合形式去试,更不能瞎碰乱凑这里向大家介绍几种常用的、便于学习掌握的方法: 1利用3824、4624求解 把牌面上的四个
2、数想办法凑成3和8、4和6,再相乘求解如3、3、6、10可组成(1063)324等又如2、3、3、7可组成(732)324等实践证明,这种方法是利用率最大、命中率最高的一种方法 2利用0、11的运算特性求解 如3、4、4、8可组成384424等又如4、5、J、K可组成11(54)1324等 3在有解的牌组中,用得最为广泛的是以下六种解法:(我们用a、b、c、d表示牌面上的四个数) (ab)(cd) 如(104)(22)24等 (ab)cd 如(102)2424等 (abc)d 如(322)1224等 (abc)d 如(952)224等 abcd 如113l1024等 (ab)cd 如(4l)6
3、624等 游戏时,同学们不妨按照上述方法试一试 需要说明的是:经计算机准确计算,一副牌(52张)中,任意抽取4张可有1820种不同组合,其中有458个牌组算不出24点,如A、A、A、5 不难看出,“巧算24点”能极大限度地调动眼、脑、手、口、耳多种感官的协调活动,对于培养我们快捷的心算能力和反应能力很有帮助 算24点经典题目算24点经典题目5 5 5 1:5(5-1/5)=24 2 7 9 10: (7-(2-9)+10)=242 7 10 10: (2(7+10)-10)=24 2 8 8 8: (2(8+8)-8)=24 2 8 8 9: (2-(8-9)8)=24 2 8 8 10: (
4、8-(2-8)+10)=24 2 8 9 9: (2+(9/9)8)=24 2 8 9 10: (2(8+9)-10)=24 2 8 10 10: (2+(10/10)8)=24 2 9 10 10: (9+(10/2)+10)=24 3 3 3 3: (3(33)-3)=24 3 3 3 4: (3(3+4)+3)=24 3 3 3 5: (33)+(35)=24 3 3 3 6: (3(3+3)+6)=24 3 3 3 7: (7+(3/3)3)=24 3 3 3 8: (3+(3-3)8)=24 3 3 3 9: (9-(3/3)3)=24 3 3 3 10: (3(10-3)+3)=2
5、4 3 3 4 4: (34)-4)3)=24 3 3 4 5: (3(4+5)-3)=24 3 3 4 6: (3-(3-4)6)=24 3 3 4 7: (4-(3-7)3)=24 3 3 4 8: (3(4-3)8)=24 3 3 4 9: (3+(34)+9)=24 3 3 5 5: (55)-(3/3)=24 3 3 5 6: (3+(35)+6)=24 3 3 5 7: (35)-7)3)=24 3 3 5 9: (5+(9/3)3)=24 3 3 5 10: (3-(3/5)10)=24 3 3 6 6: (6+(6/3)3)=24 3 3 6 7: (3(3+7)-6)=24
6、3 3 6 8: (8(3+6)/3)=24 3 3 6 9: (3+(39)-6)=24 3 3 6 10: (10-(3+3)6)=24 3 3 7 7: (3+(3/7)7)=24 3 3 7 8: (7+(33)+8)=24 3 3 7 9: (7/(3/9)+3)=24 3 3 8 8: (8/(3-(8/3)=24 3 3 8 9: (3(3+8)-9)=24 3 3 8 10: (3+(3+8)+10)=24 3 3 9 9: (3+(3+9)+9)=24 3 3 9 10: (3+(310)-9)=24 3 4 4 4: (4(3+4)-4)=24 3 4 4 5: (3+(4
7、4)+5)=24 3 4 4 6: (3+(4/4)6)=24 3 4 4 7: (3-(4-7)4)=24 3 4 4 8: (3+(4-4)8)=24 3 4 4 9: (4-(4/3)9)=24 3 4 4 10: (4(10-3)-4)=24 3 4 5 5: (3+(55)-4)=24 3 4 5 6: (3-(4-5)6)=24 3 4 5 7: (3(7-5)4)=24 3 4 5 8: (3(5-4)8)=24 3 4 5 9: (4-(5-9)3)=24 3 4 5 10: (3(4/5)10)=24 3 4 6 6: (3(4+6)-6)=24 3 4 6 8: (3(8-
8、6)4)=24 3 4 6 9: (3-(6-9)4)=24 3 4 6 10: (3(10-4)+6)=24 3 4 7 7: (3+(47)-7)=24 3 4 7 8: (4(7-3)+8)=24 3 4 7 9: (3(4+7)-9)=24 3 4 7 10: (3+(4+7)+10)=24 3 4 8 9: (3+(4+8)+9)=24 3 4 8 10: (3(10-8)4)=24 3 4 9 9: (3(9-4)+9)=24 3 4 10 10: (4+(310)-10)=24 3 5 5 6: (3(5+5)-6)=24 3 5 5 7: (7+(5/5)3)=24 3 5 5
9、 8: (3+(5-5)8)=24 3 5 5 9: (3+(9/5)5)=24 3 5 6 6: (3-(5-6)6)=24 3 5 6 7: (6(5+7)/3)=24 3 5 6 8: (3(6-5)8)=24 3 5 6 9: (3(5+6)-9)=24 3 5 6 10: (3+(5+6)+10)=24 3 5 7 8: (7(8-5)+3)=24 3 5 7 9: (3+(5+7)+9)=24 3 5 7 10: (5-(7-10)3)=24 3 5 8 8: (3+(5+8)+8)=24 3 5 8 9: (5+(39)-8)=24 3 5 9 9: (5/(3/9)+9)=24
10、 3 5 9 10: (3(10-5)+9)=24 3 5 10 10: (10-(10/5)3)=24 3 6 6 6: (3+(6/6)6)=24 3 6 6 7: (3-(6-7)6)=24 3 6 6 8: (3+(6-6)8)=24 3 6 6 9: (3+(6+6)+9)=24 3 6 6 10: (10(6-3)-6)=24 3 6 7 7: (3+(7/7)6)=24 3 6 7 8: (3+(6+7)+8)=24 3 6 7 9: (6-(7-9)3)=24 3 6 7 10: (6/(3/7)+10)=24 3 6 8 8: (3+(8/8)6)=24 3 6 8 9: (
11、3-(8-9)6)=24 3 6 8 10: (6-(8-10)3)=24 3 6 9 9: (3+(9/9)6)=24 3 6 9 10: (3-(9-10)6)=24 3 6 10 10: (3-(6/10)10)=24 3 7 7 7: (3+(7+7)+7)=24 3 7 7 8: (3+(7-7)8)=24 3 7 7 9: (9-(7/7)3)=24 3 7 7 10: (7(10-7)+3)=24 3 7 8 8: (3(8-7)8)=24 3 7 8 9: (7-(8-9)3)=24 3 7 9 9: (7+(9/9)3)=24 3 7 9 10: (7+(39)-10)=24
12、 3 7 10 10: (7-(3-10)+10)=24 3 8 8 8: (3+(8-8)8)=24 3 8 8 9: (3(9-8)8)=24 3 8 8 10: (810)-8)/3)=24 3 8 9 9: (3(89)/9)=24 3 8 9 10: (3(10-9)8)=24 3 8 10 10: (3(810)/10)=24 3 9 9 9: (9-(3-9)+9)=24 3 9 9 10: (9+(9-10)3)=24 3 9 10 10: (9-(10/10)3)=24 4 4 4 4: (4+(44)+4)=24 4 4 4 5: (5+(4/4)4)=24 4 4 4 6
13、: (4+(4-4)6)=24 4 4 4 7: (7-(4/4)4)=24 4 4 4 8: (4(4+4)-8)=24 4 4 4 9: (4(9-4)+4)=24 4 4 4 10: (44)-10)4)=24 4 4 5 5: (4+(4/5)5)=24 4 4 5 6: (4(5-4)6)=24 4 4 5 7: (4-(5-7)4)=24 4 4 5 8: (4+(4-5)8)=24 4 4 5 10: (4(10-5)+4)=24 4 4 6 8: (4-(6-8)4)=24 4 4 6 9: (4(4/6)9)=24 4 4 6 10: (4+(4+6)+10)=24 4 4
14、7 7: (4-(4/7)7)=24 4 4 7 8: (4+(47)-8)=24 4 4 7 9: (4+(4+7)+9)=24 4 4 7 10: (4+4)(10-7)=24 4 4 8 8: (4+(4+8)+8)=24 4 4 8 9: (49)-4)-8)=24 4 4 8 10: (4-(8-10)4)=24 4 4 10 10: (1010)-4)/4)=24 4 5 5 5: (4+(55)-5)=24 4 5 5 6: (4+(5-5)6)=24 4 5 5 7: (7-(5/5)4)=24 4 5 5 8: (4-(5/5)8)=24 4 5 5 9: (5(9-5)+4
15、)=24 4 5 5 10: (4+(5+5)+10)=24 4 5 6 6: (4(6-5)6)=24 4 5 6 7: (5-(6-7)4)=24 4 5 6 8: (4+(5-6)8)=24 4 5 6 9: (4+(5+6)+9)=24 4 5 6 10: (4+(56)-10)=24 4 5 7 7: (5+(7/7)4)=24 4 5 7 8: (4+(5+7)+8)=24 4 5 7 9: (5+(47)-9)=24 4 5 7 10: (10(7-5)+4)=24 4 5 8 8: (5-(8/4)8)=24 4 5 8 9: (4(9-5)+8)=24 4 5 8 10: (
16、4-(8/5)10)=24 4 5 9 9: (5+(9/9)4)=24 4 5 9 10: (5-(9-10)4)=24 4 5 10 10: (5+(10/10)4)=24 4 6 6 6: (4+(6-6)6)=24 4 6 6 7: (4(7-6)6)=24 4 6 6 8: (4+(6+6)+8)=24 4 6 6 9: (6(9-4)-6)=24 4 6 6 10: (6(6+10)/4)=24 4 6 7 7: (4+(6+7)+7)=24 4 6 7 8: (4+(6-7)8)=24 4 6 7 9: (6(7+9)/4)=24 4 6 7 10: (6+(47)-10)=24
17、 4 6 8 8: (4(68)/8)=24 4 6 8 9: (4-(8/6)9)=24 4 6 8 10: (4(10-6)+8)=24 4 6 9 9: (4(69)/9)=24 4 6 9 10: (4(10-9)6)=24 4 6 10 10: (4(610)/10)=24 4 7 7 7: (7-(7/7)4)=24 4 7 7 8: (4-(7/7)8)=24 4 7 8 8: (4+(7-8)8)=24 4 7 8 9: (7+(8-9)4)=24 4 7 8 10: (7/(4/8)+10)=24 4 7 9 9: (7-(9/9)4)=24 4 7 9 10: (7+(9-
18、10)4)=24 4 7 10 10: (7-(10/10)4)=24 4 8 8 8: (4-(8/8)8)=24 4 8 8 9: (4+(8-9)8)=24 4 8 8 10: (8+(8-10)4)=24 4 8 9 9: (4-(9/9)8)=24 4 8 9 10: (4+(9-10)8)=24 4 8 10 10: (4-(10/10)8)=24 4 9 9 10: (9-(4-9)+10)=24 5 5 5 5: (55)-(5/5)=24 5 5 5 6: (5+(55)-6)=24 5 5 5 9: (5+(5+5)+9)=24 5 5 6 6: (5+(5-6)6)=24
19、 5 5 6 7: (6+(55)-7)=24 5 5 6 8: (5+(5+6)+8)=24 5 5 7 7: (5+(5+7)+7)=24 5 5 7 8: (5+(5-7)8)=24 5 5 7 10: (10(5+7)/5)=245 5 8 8: (55)-(8/8)=24 5 5 8 9: (5(8-5)+9)=24 5 5 8 10: (5-(10/5)8)=24 5 5 9 9: (55)-(9/9)=24 5 5 9 10: (9+(55)-10)=24 5 5 10 10: (55)-(10/10)=245 6 6 6: (5-(6/6)6)=24 5 6 6 7: (5+(
20、6+6)+7)=24 5 6 6 8: (6(8-5)+6)=24 5 6 6 9: (69)-(56)=24 5 6 6 10: (6(10-5)-6)=24 5 6 7 7: (5-(7/7)6)=24 5 6 7 8: (5+(7-8)6)=24 5 6 7 9: (9(7-5)+6)=24 5 6 8 8: (5+(6-8)8)=24 5 6 8 9: (5+(8-9)6)=24 5 6 8 10: (5(68)/10)=24 5 6 9 9: (5(9-6)+9)=24 5 6 9 10: (5+(9-10)6)=24 5 6 10 10: (5-(10/10)6)=245 7 7
21、9: (5+7)(9-7)=24 5 7 7 10: (7(7-5)+10)=245 7 8 8: (8(7-5)+8)=24 5 7 8 9: (5+(7-9)8)=24 5 7 8 10: (5+7)(10-8)=24 5 7 9 10: (5(10-7)+9)=245 7 10 10: (7/(5/10)+10)=24 5 8 8 8: (58)-8)-8)=24 5 8 8 9: (8/(8-5)9)=24 5 8 8 10: (5+(8-10)8)=245 9 10 10: (9-(5-10)+10)=24 6 6 6 6: (6+(6+6)+6)=246 6 6 8: (6+(6-
22、8)6)=24 6 6 6 9: (6(66)/9)=24 6 6 6 10: (610)-(66)=24 6 6 7 9: (6+(7-9)6)=24 6 6 7 10: (6(10-7)+6)=24 6 6 8 8: (6/(8-6)8)=24 6 6 8 9: (6+(6-9)8)=24 6 6 8 10: (6+(8-10)6)=246 6 9 10: (9(6+10)/6)=24 6 7 7 10: (7+(7-10)6)=246 7 8 9: (6/(9-7)8)=24 6 7 8 10: (6+(7-10)8)=246 7 9 9: (9(7+9)/6)=24 6 7 10 10
23、: (10(10-7)-6)=24 6 8 8 8: (8(8-6)+8)=24 6 8 8 9: (9(8+8)/6)=24 6 8 8 10: (6/(10-8)8)=24 6 8 9 9: (8/(9-6)9)=24 6 8 9 10: (9(10-8)+6)=24 6 9 9 10: (9/(6/10)+9)=24 6 10 10 10: (10-(6-10)+10)=24 7 7 9 10: (7(9-7)+10)=24 7 8 8 9: (8(9-7)+8)=24 7 8 8 10: (810)-(78)=24 7 8 9 10: (8/(10-7)9)=24 7 8 10 10: (7(10-8)+10)=24 8 8 8 10: (8(10-8)+8)=24