把四个4运用加减乘除算出0到10
4+4+4-4=04-4+4/4=1
4/4+4/4=2
(4+4+4)/4=3
(4-4)*4+4=4
(4*4+4)/4=5
(4+4)/4+4=6
44/4-4=7
4*4-4-4=8
4/4+4+4=9
(44-4)/4=10
绛旓細锛4/4+4锛*4寮鏍瑰彿=锛1+4锛*2=10
绛旓細4梅(4锛4)脳4=2 4梅(4锛4)脳4=2 4梅(4锛4)脳4=2 4脳4梅(4锛4)=2 (4梅4)锛4梅4=2 4梅4锛(4梅4)=2 4梅4锛4梅4=2 4鈥(4锛4)梅4=2 (4梅4)锛4梅4=2 4梅4锛(4梅4)=2 4梅4锛4梅4=2 4鈥(4锛4)梅4=2 4脳4梅(4锛4)=2 4脳4梅(4锛4)=2 (4梅4)...
绛旓細4+4+{鏍瑰彿[鏍瑰彿锛4*4锛塢}=10
绛旓細瑙:鍒楀紡濡備笅 锛4脳4+4锛壝4-4 =锛16+4锛壝4-4 =20梅4-4 =5-4 =1
绛旓細涓嬪崍璇诲垵涓鐨勮〃濡硅瑕佹垜甯仛涓閬撻锛4涓4鐨鍔犲噺涔橀櫎鎷彿杩愮畻锛岃姹傜粨鏋滅瓑浜10鎴88 锛屾湰浠ヤ负寰堝皬鑿滅殑锛屾悶浜10鍒嗛挓鎰f槸鍙戠幇涓嶅鍔诧紝杩欓潰瀛愬彲涓笉璧峰搱锛屽垢濂藉湪鐢佃剳鍓嶏紝鐧惧害鍢涖傚眳鐒惰繕鐪熸湁杩欐牱涓閬撻锛屼竴鐪嬬粨鏋滀护鎴戝ぇ鍚冧竴鎯婂晩锛屽師鏉ユ槸涓剳绛嬫ヨ浆寮備綘鐚滄庝箞鐫锛熺瓟妗堟槸杩欐牱婊达細(44-4)/4=10锛44...
绛旓細S9=(9/2)(a1+a9)=(9/2)(2a1+8d)=9a1+36d>0 a1+4d>0 a5>0 S10=(10/2)(a1+a10)=5(2a1+9d)=10a1+45d<0 a1+4.5d<0 a1>0,鎵浠ユ樉鐒禿<0 鎵浠1+4.5d>a1+5d=a6 鎵浠6<0 鎵浠6=S5+a6<S5 鎵浠5鏈澶 S9=(9/2)(a1+a9)=(9/2)(2a1+8d)=9a1+36d>0 a1+4d>...
绛旓細(4+4)/(4+4)=1 4-(4+4)/4=2 (4+4+4)/4=3 4*(4-4)+4=4 (4*4+4)/4=5 (4+4)/4+4=6 4+4-4/4=7 4*4-4-4=8 4+4+4/4=9
绛旓細(44-4)梅4=10
绛旓細(4锛4锛4)梅4 =12梅4 =3 4锛(4锛4)脳4 =4锛0脳4 =4 (4脳4锛4)梅4 =20梅4 =5 (4锛4)梅4锛4 =8梅4锛4 =6 4锛(4锛4梅4)=4锛3 =7 4脳4锛4锛4 =8 4锛4锛4梅4 =9
绛旓細锛4-锛4梅4锛夛級*4