bộ đề thi vào lớp 10 môn toán các tỉnh hay

Mục lục ĐỀ 1. 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[    #     − + − +   +  !>+  ! +  ! +  !>+  ! − − + − + −    +  ! +  !  − + −     + − −      + − +  W8' W8' 23+1+W8'! {<?@8nA/0<  ^A  < <    <  < < < < <?@8nA/0 ^A       < ?@8nA8E {6&8F <   ó   ó+! ó  3     − ,   3  7&W *D ?=• ?=   − •   − ?R&a8F &8'*B  8nA5+3!7+   − 3   − ! W8' W8' W8' W8' 2351+8'! {   #   #      + =     − =   ó #  #  #     + =   − =  ó #  # j    + =   =  ó # #  #   + =   =  ó # #   =   =  ?R"*D"2(-+#3#! {, *D  + #! >>+ ! j   ∆ = − − − = + = > 6*D "e$"   + #!  > + #!  >      − − + = = − − − = = −  3/ x 4 - 8x 2 – 9 = 0 (1) hoctoancapba.com `.  + ≥ ! 6+!K  <}j+! , *D }$*}+<!+<j! 6+!*D "e$"  <+5&a!3  j+R! ?=  j  j #  ⇔ ⇔ = ±=  ,R"*B +!*D "5  #3  <# W8' W8' W8' W8' 23,1+8'!  }+}!}+p! {, *D~€•<+}!‚  }>+}!   }}   }   }>> +}!  •7=G 6+p!5(z*D "e$"7=G {6*D "2-(ó>+}!q ó}q óq óq    ?R7=q   +p!*D "2-(  #{, *D+p!*D "7=G+s& ! 1     + !           + = − = −   = −   , *D[                 }     +    !  }    •[+}!  }+}!   }}   } +!  }>>##  }#  +}#!  ƒ W8' W8' W8' W8' W8' W8' ;-(LM O7*„O}#ó #  ?R7= #  [8aAU-$H W8' 23.1+#W8'! 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EAF Võy HK // AF Võy ED // HK // AF 7 TNH KHNH HO S GIO DC V O TO CHUYấN KHNH HO K THI TUYN SINH VO LP 10 THPT NM HC 2014 2015 THI CHNH THC MễN THI: TON (KHễNG CHUYấN) Ngy thi: 20/6/2014 (Thi gian : 120 phỳt khụng k thi gian giao ) Bi 1: (2,00 im) 1) Khụng dung mỏy tinh cõm tay, tinh giỏ tri biu thc: A = 1 8 10 2 +1 2 5 a +1 + 2) Rut gon biu thc B = vi a > 0, a 4 ữ: a 2 a4 a +4 a2 a a a... 5x3 + 5x 2)2014 + 2015 = (1)2014 + 2015 = 1 + 2015 = 2016 9 TNH TY NINH Kè THI TUYN SINH VO LP 10 NM HC 2014 2015 Ngy thi : 21 thỏng 6 nm 2014 Mụn thi : TON (Khụng chuyờn) Thi gian : 120 phỳt (Khụng k thi gian giao ) CHNH THC ( thi cú 01 trang, thớ sinh khụng phai chộp vo giy thi) Cõu 1 : (1im) Thc hin cỏc phep tinh ( )( a) A = 2 5 2 + 5 ) b) B = 2 (... tam giỏc PIC l tam giỏc ờu Khi o hay tinh din tich cua tam giỏc PIC theo R Bi 5: (1,0 im) Cho biu thc A = (4x5 + 4x4 5x3 + 5x 2)2014 + 2015 Tinh giỏ tri cua biu 1 2 1 2 2 +1 - HấT Giỏm thi coi thi khụng gii thich gỡ thờm thc A khi x = GI í BI GII TON VO 10 KHễNG CHUYấN Lấ KHIấT QUNG NGI Bi 1: 4 a/ Tinh: 2 25 + 3 4 = 10 + 6 = 16 b/ ụ thi hm sụ y = ax + b i qua A(1;... suy ra: AM = R 2 AOM vuụng tai O M l im chinh gia cung AB S GIO DC V O TO QUNG NGI CHNH THC K THI TUYN SINH VO LP 10 THPT NM HC 2014-2015 MễN : TON (khụng chuyờn) Ngy thi: 19/6/2014 Thi gian lm bi: 120 phỳt (khụng k thi gian giao ) 8 TNH QUNG NGI Bi 1: (1,5 im) a/ Tinh: 2 25 + 3 4 b/ Xỏc inh a v b ụ thi hm sụ y = ax + b i qua im A(1; 2) v im B(3; 4) x 2 x+4 : + c/ Rut gon biu thc A = vi x ... 2 4.12 = 1 7 +1 7 1 x= = 4 hay x = =3 2 2 b) x 2 ( 2 + 1) x + 2 = 0 Phng trỡnh co : a + b + c = 0 nờn co 2 nghim l : c = 2 a c) x 4 9 x 2 + 20 = 0 x = 1 hay x = t u = x2 0 pt thnh : u 2 9u + 20 = 0 (u 4) (u 5) = 0 u = 4 hay u = 5 Do o pt x 2 = 4 hay x 2 = 5 x = 2 hay x = 5 3 x 2 y = 4 12 x 8 y = 16 4 x 3 y = 5 12 x 9 y = 15 y =1 x = 2 d) Bi 2: a) ụ thi: Lu ý: (P) i qua O(0;0),... = (2 x 1 2 x )2 + (2 x 1) 2 + 2014 2014 x +1 1 =0 1 2 x 2 x min A = 2014 x= 4 2 x 1 = 0 4 TNH BèNH NH S GIO DC V O TO BèNH NH K THI TUYN VO LP 10 TRUNG HC PH THễNG NM HC 2014 2015 Mụn thi: TON Ngy thi: 28/6/2014 Thi gian lm bi: 120 phỳt (khụng k thi gian phỏt ) D B Bi 1: (2,5 im) a) Gii phng trỡnh: 3x 5 = x + 1 b) Gii phng trỡnh: x 2 + x 6 = 0 x 2 y = 8 x + y = 1 c) Gii h phng trỡnh:... 1 1 1 = 2 1 + 3 2 + + 121 120 = - 1 + 11 = 10 1 2 2 = > = 2 k +1 k Vi moi k N * , ta co: k k+ k k + k +1 1 1 + + Do o: B = 1 + 2 35 = ( ( ) (1) ) ( ) B > 2 1 + 2 2 + 3 3 + 4 35 + 36 = 2 1 + 36 = 2 ( 1 + 6 ) = 10 T (1) v (2) suy ra: B > A (2) 5 TP H CH MINH S GD-T TP H CH MINH CHNH THC K THI TUYN SINH LP 10 THPT Nm hc: 2014 2015 MễN: TON Thi gian lm bi: 120 phỳt Bi 1: (2 im) Gii cỏc... 1 m m 7 hay m 7 2 4 + m = 4 4+m = 4 4 + m = 4 m > 4 m > 4 (loai) hay m > 7 m < 7 m 7 4 4 + m = m + 7 4+m = 4 m > 4 m > 4 m > 4 2 m = 5 hay m = 3 2 16 ( 4 + m ) = m + 14m + 49 m = 5 hay m = 3 m 2m 15 = 0 Bi 4: 1)Khi m = 0, phng trỡnh thnh : x2 4x = 0 x = 0 hay x 4 = 0 x = 0 hay x = 4 2) = ( m 2 ) + m 2 = 2m 2 4m + 4 = 2 ( m2 2m + 1) + 2 = 2 ( m 1) + 2... cụ inh, CD l ng kinh thay ụi cua ng tron (O) (khỏc AB) Tiờp tuyờn tai B cua (O) ct AC v AD lõn lt tai N v M Chng minh t giỏc CDMN nụi tiờp Cõu 10 : (1 im) Cho t giỏc ABCD nụi tờp ng tron tõm O, bỏn kinh bng a Biờt AC vuụng goc vi BD Tinh AB2 + CD 2 theo a - HT Giỏm th khụng gii thớch gỡ thờm Ho v tờn thi sinh : Sụ bỏo danh : Ch ký cua giỏm thi 1: Ch ký cua giỏm thi 2 : BI GII Cõu... )( ) a) A = 2 5 2 + 5 = 22 b) B = 2 ( ) ( 5) 2 = 4 5 = 1 50 3 2 = 100 3.2 = 10 6 = 4 Cõu 2 : (1 im) Gii phng trỡnh: 2 x 2 + x 15 = 0 = 12 4.2 ( 15 ) = 121 > 0 , = 11 1 + 11 10 5 1 11 12 = = ; x2 = = = 3 4 4 2 4 4 5 Võy S = ; 3 2 Cõu 3 : (1 im) iờu kin x 0 x1 = 5 2 4 5 1 1 x+ y=3 x + 2y = 6 x = 10 x = 10 x= x= 2 2 (nhõn) 1 1 2 2 2y = 4 2y = 4 + y =3 + y . 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