1至100的自然数中同时是2,3,5的倍数的数共有几个 在自然数1到100中,三的倍数有多少个
1\u81f3100\u7684\u81ea\u7136\u6570\u4e2d\u540c\u65f6\u662f2\u30013\u30015\u7684\u500d\u6570\u7684\u6570\u5171\u6709\u51e0\u4e2a1\u81f3100\u7684\u81ea\u7136\u6570\u4e2d\u540c\u65f6\u662f2\uff0c3\uff0c5\u7684\u500d\u6570\u7684\u6570\u5171\u67093\u4e2a\u3002
\u5206\u522b\u662f\uff1a30,60,90.
\u56e0\u4e3a2x3x5=30\u3002\u540c\u65f6\u662f2\uff0c3\uff0c5\u7684\u500d\u6570\u7684\u6570\u4e5f\u5c31\u662f30\u7684\u500d\u6570\u3002
\u5e0c\u671b\u80fd\u5e2e\u5230\u4f60\uff01
\u5728\u81ea\u7136\u65701\u5230100\u4e2d\uff0c\u4e09\u7684\u500d\u6570\u670933\u4e2a.
100\u00f73=33......1
\u6240\u4ee5\u5728\u81ea\u7136\u65701~100\u4e2d\uff0c3\u7684\u500d\u6570\u670933\u4e2a\u3002
\u5217\u4e3e\u5982\u4e0b\uff1a3\u30016\u30019\u300112\u300115\u300118\u300121\u300124\u300127\u300130\u300133\u300136\u300139\u300142\u300145\u300148\u300151\u300154\u300157\u300160\u300163\u300166\u300169\u300172\u300175\u300178\u300181\u300184\u300187\u300190\u300193\u300196\u300199.\u5171\u670933\u4e2a.
\u62d3\u5c55\u8d44\u6599\uff1a\u4e00\u4e2a\u6574\u6570\u80fd\u591f\u88ab\u53e6\u4e00\u4e2a\u6574\u6570\u6574\u9664\uff0c\u8fd9\u4e2a\u6574\u6570\u5c31\u662f\u53e6\u4e00\u6574\u6570\u7684\u500d\u6570\u3002\u540c\u6837\u7684\uff0c\u4e00\u4e2a\u6570\u9664\u4ee5\u53e6\u4e00\u6570\u6240\u5f97\u7684\u5546\u3002
\u5982a/b=c\uff0c\u5c31\u662f\u8bf4\uff0ca\u662fb\u7684\u500d\u6570\u3002\u4e00\u4e2a\u6570\u7684\u500d\u6570\u6709\u65e0\u6570\u4e2a\uff0c\u4e5f\u5c31\u662f\u8bf4\u4e00\u4e2a\u6570\u7684\u500d\u6570\u7684\u96c6\u5408\u4e3a\u65e0\u9650\u96c6\u3002
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0d\u80fd\u628a\u4e00\u4e2a\u6570\u5355\u72ec\u53eb\u505a\u500d\u6570\uff0c\u53ea\u80fd\u8bf4\u4e00\u4e2a\u6570\u662f\u53e6\u4e00\u4e2a\u6570\u7684\u500d\u6570\u3002
分别是:30,60,90.
因为2x3x5=30。同时是2,3,5的倍数的数也就是30的倍数。
希望能帮到你!
3个 30 60 90
共有3个 30 60 90
绛旓細1鑷100鐨勮嚜鐒舵暟涓悓鏃舵槸2锛3锛5鐨勫嶆暟鐨勬暟鍏辨湁3涓傚垎鍒槸锛30,60,90.鍥犱负2x3x5=30銆傚悓鏃舵槸2锛3锛5鐨勫嶆暟鐨勬暟涔熷氨鏄30鐨勫嶆暟銆傚笇鏈涜兘甯埌浣狅紒
绛旓細1鑷100鐨勮嚜鐒舵暟涓悓鏃舵槸2锛3锛5鐨勫嶆暟鐨勬暟鍏辨湁3涓傚垎鍒槸锛30,60,90.鍥犱负2x3x5=30銆傚悓鏃舵槸2锛3锛5鐨勫嶆暟鐨勬暟涔熷氨鏄30鐨勫嶆暟銆傚笇鏈涜兘甯埌浣狅紒
绛旓細3涓紝30,60,90锛岄鍏5鐨勫嶆暟鍙兘鏄5鍜0缁撳熬锛2鐨勫嶆暟鏄伓鏁帮紝鎵浠ヤ釜浣嶆暟鑲畾鏄0锛岀劧鍚庡啀鏄3鐨勫嶆暟锛屽氨鍑烘潵浜
绛旓細1. 鍦1鍒100鐨勮嚜鐒舵暟涓锛屾暟瀛2鍑虹幇鍦ㄤ互涓嬪崄浣嶆暟涓細2, 12, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29銆2. 姣忎釜鍗佷綅鏁颁腑锛屾暟瀛2鍑虹幇1娆★紝鎵浠ユ诲叡鍑虹幇浜10娆°
绛旓細9涓傝兘鍚屾椂琚2锛3锛4鏁撮櫎鐨勬暟锛屽氨鏄彲浠ヨ12鏁撮櫎鐨勬暟銆12*8=96锛屾墍浠1-100闂存湁8涓暟鍙互琚2锛3锛4鏁撮櫎锛屽姞涓0鏄9涓
绛旓細2,12,20,21,22,23,24,25,26,27,28,29,32,42,52,62,72,82,92,19涓
绛旓細鍦1-100杩100涓鑷劧鏁颁腑,鏃㈣兘琚2鏁撮櫎,鍙堣兘琚3鏁撮櫎鐨勬墍鏈夋暟 6銆12銆18鈥︹96鏄瓑宸暟鍒,a1=6 鍏樊d=6 96=6+锛坣-1)脳6 n=16 涓鍏辨湁16涓暟 鎵浠ユ棦鑳借2鏁撮櫎,鍙堣兘琚3鏁撮櫎鐨勬墍鏈夋暟鍜 锛6+96锛壝16/2 =102脳8 =816
绛旓細2鐨勫嶆暟鐨勭壒寰佹槸涓綅鏄伓鏁扮殑鏁版槸2鐨勫嶆暟銆3鐨勫嶆暟鐗瑰緛鏄悇涓暟浣嶄箣鍜屾兂鍔犳槸3鐨勫嶆暟锛岄偅浜涗釜鏁板氨鏄3鐨勫嶆暟銆傛棦鏄2鐨勫嶆暟锛屽張鏄3鐨勫嶆暟锛屽氨瑕佹弧瓒充互涓婁袱涓壒寰併傛棦鏄簩鐨勫嶆暟鍙堟槸涓夌殑鍊嶆暟鐨勬暟鏈夛細6,12,18,24,30,36,42,48,54:60,66,72,78,84,90,96....
绛旓細浠1鍒100杩100涓鑷劧鏁颁腑锛鑳鍚屾椂琚2鍜3鏁撮櫎鐨勬暟鍏辨湁16涓紝鑳借3鏁撮櫎浣嗕笉鏄5鐨勫嶆暟鐨勬暟鍏辨湁27涓 鑳借11鏁撮櫎鐨勬渶灏忎簲浣嶆暟鏄細锛10010 锛 鏈澶т簲浣嶆暟鏄細锛99990 锛夎兘琚4鏁撮櫎鐨勬渶澶у洓浣嶆暟鏄細锛9996 锛 鑳借8鏁撮櫎鐨勬渶灏忓洓浣嶆暟鏄紙1000 锛...
绛旓細2鍜3鐨勬渶灏忓叕鍊嶆暟鏄6锛屽垯6锛12锛18绛夌瓑閮芥槸2鐨勫嶆暟涔熸槸3鐨勫嶆暟锛屾渶鍚涓浣嶄负96.灏嗘墍鏈夋暟鐩稿姞鏈6+6*2+6*3.銆傘傘+6*16=6*锛1+2+3+銆傘傘+16锛=6*[锛1+16锛/2*16]=6*8*17=48*17=816