Bài kiểm tra môn: Toán 6 - Thời gian 45 phút

TRƯỜNG THCS NHƯ HÒA BÀI KIỂM TRA
 Môn: Toán 6 - Thời gian 45 phút Họ và tên:......................................................Lớp 6A
Điểm
Lời phê của giáo viên
Bài 1: ( 3,0 điểm).Thực hiện phép tính:
a, 12 + ( - 5 ) = ................................................................................................................
b,( - 5 ).8.( - 2 ).3 = .......................................................................................................
c, 125 – ( - 75 ) + 32 – ( 48 + 32 ) = ...........................................................................
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d, 3 . ( -4 )2 + 2 . ( - 5 ) -20 = ..........................................................................................
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Bài 2.( 2,0 điểm).Tìm x biết: 
a, x + 10 = -14 b, 6x -12 = 48
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 c, = 3 d, ( x – 1 )( x + 2 ) = 0
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Bài 3. ( 2,0 điểm). a, Tìm giá trị tuyệt đối của : 32, -10, 0
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 b, Tìm số nguyên a biết:
½a½= 3 ½a + 1½ = -1 ½a½> 1
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 Bài 4. ( 2,0 điểm)
a, Tìm tất cả các ước của - 10
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b, Tìm 5 bội của - 7
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Bài5. ( 1,0 điểm).Tìm n thuộc Z sao cho
a, ( n + 3) ( n + 1)
b, ( 2n + 1) ( n - 1) 
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