Đề kiểm tra 1 tiết số học 6 - 002

Hoü vaì tãn: .............................. KIÃØM TRA 1 TIÃÚT
Låïp: ....... Män : SÄÚ HOÜC
Âiãøm
Låìi phã :






Âãö ra:
Cáu1 ( 2 âiãøm)
Âënh nghéa luyî thæìa báûc n cuía a .
Viãút daûng täøng quaït chia hai luyî thæìa cuìng cå säú .
Aïp duûng tênh a15: a6 (a ≠ 0)
Câu 2:( 2 âiãøm)
Âiãön dáúu “ × ” vaìo ä thêch håüp
Cáu
Âuïng
Sai

a) 28 . 2 4 = 22



b) 53 = 15



c) 53 . 52 = 55




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Cáu (2,5 âiãøm)
Thæûc hiãûn caïc pheïp tênh ( tênh nhanh nãúu coï thãø )
4 .53 - 3 .23 + 33 : 32 b)28 . 76 + 34 . 28 - 28 .10
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Cáu 3 ( 2,5 âiãøm )
Tçm säú tæû nhiãn x , biãút :
a) x = 2 6 : 2 4 + 3 2 . 3 3 b) 6x - 39 = 5628 : 28
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.Cáu 5: (1âiãøm)
Tçm säú tæû nhiãn n , biãút
a) 3 n = 27 b) 2 N . 4 = 128
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