Kiểm tra 45 phút môn: Toán lớp 6

Hä vµ tªn:.................................. Líp:........................................... KiĨm tra 45 phĩt M«n: To¸n líp 6 §iĨm Lêi phª cđa thÇy, c« gi¸o §Ị bµi : Em h·y chän ®¸p mét ¸n ®ĩng trong c¸c c©u tõ 1 ®Õn 7 C©u 1. Cho tËp hỵp A = {0} A kh«ng ph¶i lµ tËp hỵp. A lµ tËp rçng. A lµ tËp hỵp cã mét phÇn tư lµ sè 0. A lµ tËp hỵp kh«ng cã phÇn tư nµo. C©u 2. Sè phÇn tư cđa tËp hỵp M = cã: 31 phÇn tư 30 phÇn tư 29 phÇn tư 28 phÇn tư C©u 3. Tỉng c¸c sè tù nhªn cã trong tËp hỵp M = b»ng: A. 59715 B. 2005 C. 1976 D. C¸c ®¸p ¸n A, B, C ®Ịu sai C©u 4. Gi¸ trÞ cđa luü thõa 23 b»ng: 2 3 6 8 C©u 5. C¸ch tÝnh ®ĩng lµ: 62.67 = 614 62.67 = 69 62.67 = 369 62.67 = 3614 C©u 6. C¸ch tÝnh ®ĩng lµ: A. 55:5 = 55 B. 55:5 = 15 C. 55:5 = 54 D. 55:5 = 14 C©u 7. Mét tµu ho¶ cÇn chë 892 kh¸ch tham quan. BiÕt r»ng mçi toa cã 10 khoang, mçi khoang cã 4 chç ngåi. CÇn mÊy toa ®Ĩ chë hÕt sè hµnh kh¸ch tham quan ? 22 toa 23 toa 24 toa C©u 8. Trong c¸c c©u sau, c©u nµo ®ĩng ? C©u nµo sai ? a/ Trong phÐp chia cã d­, sè d­ bao giê cịng nhá h¬n sè chia. b/ TËp hỵp rçng lµ tËp hỵp kh«ng cã phÇn tư nµo c/ §iỊu kiƯn cđa phÐp trõ hai sè tù nhiªn lµ sè bÞ trõ ph¶i lín h¬n sè trõ C©u 9. §iỊn vµo chç trèng ë mçi dßng ®Ĩ ®­ỵc ba sè tù nhiªn liªn tiÕp: 30 ; .... ; ...... .......; 1999 ;...... ...... ; ........; x+2 víi x N C©u 10. §iỊn dÊu “x” vµo « trèng mµ em chän: PhÐp tÝnh(víi a N*) KÕt qu¶ lµ: §ĩng Sai a + a a2 a – a 0 a.a 2.a a : a 1 C©u 11. Cho tËp hỵp A = . H·y viÕt mét tËp hỵp con cđa A C©u 12. TÝnh gi¸ trÞ cđa biĨu thøc: B = 1449 - C©u 13. T×m sè tù nhiªn x, biÕt: (x – 20).20 = 20 C©u 14. T×m c¸c sè tù nhiªn a, biÕt r»ng khi chia a cho 3 th× ®­ỵc th­¬ng lµ 15. 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