de kiem tra

<span class='text_page_counter'>(1)</span>TRêng thcs tù l¹n ---------------&--------------Hä vµ tªn:……………………… Líp: …………………………… §iÓm. §Ò kiÓm tra 1 tiÕt m«n: sè häc 6. Lêi phª cña thÇy c« gi¸o.. §Ò sè 2 Bài 1 (2 điểm). Trong các khẳng định sau đây, khẳng định nào đúng, khẳng định nào sai? a). 2009 2009. c). a    a . b)  348   349 d)  52     70  18 Bµi 2 (4 ®iÓm). Thùc hiÖn c¸c phÐp tÝnh sau: a) 125  75 + 32  (48 + 32) c) 3.52  4.(24  9) b) (7  10) + 139 d) 2.(  3)3 + 4.52 + 24 Bµi 3 (2 ®iÓm). T×m sè nguyªn x, biÕt: a) x + 7 =  15 b) 3x  32 = 28 c) 3x  (  16) =  23 Bµi 4 (2 ®iÓm). a) T×m n¨m béi cña 6. b) TÝnh tæng tÊt c¶ c¸c sè nguyªn x tho¶ m·n: – 9 < x < 8. Bµi Gi¶i ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ..................................................................................................................................................... ......................................................................................................................................................

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