Chñ ®Ò 1: Sè tù nhiªn
Tªn chñ ®Ò: Sè tù nhiªn
TiÕt 1
I. Môc tiªu:
- ............................................................................................................................
- ............................................................................................................................
II. C¸c tµi liÖu hç trî:
500 bµi to¸n chän läc líp 6.
To¸n c¬ b¶n vµ n©ng cao líp 6
Tr¾c nghiÖm to¸n 6
III. Néi dung:
1. Tãm t¾t:
* Lý thuyÕt:
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
* C«ng thøc:
...............................................................................................................
* Ph­¬ng ph¸p gi¶i:
...............................................................................................................
2. Bµi tËp:
§Ò bµi
H­íng dÉn gi¶i

Bµi 1: a) ViÕt tËp hîp A c¸c sè tù nhiªn nhá h¬n 8 b»ng hai c¸ch.
b) Minh ho¹ tËp hîp b»ng h×nh vÏ
c) §iÒn kÝ hiÖu thÝch hîp: 0 ( A; 29 ( A; 5 ( A; 10 ( A


Bµi 2: ViÕt c¸c tËp hîp:
TËp hîp A c¸c ch÷ sè trong sè 1111011101001
TËp hîp B c¸c ch÷ c¸i trong côm tõ “Th¨ng Long”
TËp hîp C c¸c sè tù nhiªn lín h¬n 6 nh­ng nhá h¬n 12 (b»ng hai c¸ch)
Bµi 3: Cho c¸c h×nh vÏ. ViÕt c¸c tËp hîp.








Bµi 4: Dßng nµo cho ta 3 sè tù nhiªn liªn tiÕp t¨ng dÇn.
a) a, a+1, a+2 (a ( N)
b) b+1, b, b-1 (b ( N*)
c) c, c, c (c ( N)
d) a+2, a+3, a+4 (a ( N)
Bµi 5: T×m x, y ( N biÕt x ( y vµ y ( 5 (x


Bµi 6: ViÕt c¸c sè sau b»ng c¸ch dïng c¸c ch÷ sè La M·: 23, 67, 85

..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................





..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................

 3. H­íng dÉn c¸c viÖc lµm tiÕp:
...........................................................................................................................
...........................................................................................................................
.........................................................................................................................................
Tªn chñ ®Ò: Sè tù nhiªn
TiÕt 2
I. Môc tiªu:
- ............................................................................................................................
- ............................................................................................................................
II. C¸c tµi liÖu hç trî:
500 bµi to¸n chän läc líp 6.
To¸n c¬ b¶n vµ n©ng cao líp 6
Tr¾c nghiÖm to¸n 6
III. Néi dung:
1. Tãm t¾t:
* Lý thuyÕt:
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
* C«ng thøc:
...............................................................................................................
* Ph­¬ng ph¸p gi¶i:
...............................................................................................................
2. Bµi tËp:
§Ò bµi
H­íng dÉn gi¶i

Bµi 1. T×m sè phÇn tö cña mçi tËp hîp sau:
A = {x( N/ 5 ( x < 17 }
B = {1; 3; 5; 7; ...; 999}
N* = {1; 2; 3; 4; 5;... }
D = {x ( N / 5 < x < 6}
E = {x ( N / x - 5 = 0}

Bµi 2: Cho A = {0; 2; 4; 6; 8} §iÒn kÝ hiÖu thÝch hîp:
a) 0 ( A d) {0; 1; 2} ( A
b) {0} ( A e) 7 ( A
c) {6; 4} ( A g) {x ( N / x < 9} ( A
Bµi 3: Cho c¸c tËp hîp:
A = { x ( N / x < 7}
B = { x ( N / 3 ( x ( 7}
C= { x ( N / x >7}
§iÒn kÝ hiÖu thÝch hîp:
A ( B B ( A A ( C B ( C

Bµi 4: Hµ lµ em g¸i H¹nh. Hµ kh«ng nhiÒu h¬n 16 tuæi. H¹nh kh«ng Ýt h¬n 14 tuæi. Hái tuæi mçi ng­êi?




Bµi 5: S¸ch gi¸o khoa To¸n 6 tËp I cã 132 trang. Hái ph¶i viÕt tÊt c¶ bao nhiªu ch÷ sè ®Ó ®¸nh sè trang?




..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................
..............................................................

 3. H­íng dÉn c¸c viÖc lµm tiÕp:
...........................................................................................................................
...........................................................................................................................
.........................................................................................................................................
Tªn chñ ®Ò: Sè tù nhiªn
TiÕt 3.
I. Môc tiªu:
- ............................................................................................................................
- ............................................................................................................................
II. C¸c tµi liÖu hç trî:
500 bµi to¸n chän läc líp 6.
To¸n c¬ b¶n vµ n©ng cao líp 6
Tr¾c nghiÖm to¸n 6
III. Néi dung:
1. Tãm t¾t:
* Lý thuyÕt:
...........................................................................................................................
...........................................................................................................................
...........................................................................................................................
* C«ng thøc:
...............................................................................................................
* Ph­¬ng ph¸p gi¶i:
...............................................................................................................
2. Bµi tËp:
§Ò bµi
H­íng dÉn gi¶i

Bµi 1: Chän mét trong c¸c tõ trong ngoÆc (thõa sè, mét tæng, kh«ng thay ®æi, tÝch ®ã, thø ba, céng, nh©n) ®Ó ®iÒn vµo mçi chç trèng:
Khi ®æi chç c¸c sè h¹ng trong ......... th× tæng ®ã ......
Khi ®æi chç c¸c ........ trong mét tÝch th× .......... kh«ng ®æi
Muçn nh©n mét sè víi ........ , ta cã thÓ nh©n sè ®ã víi tõng sè h¹ng cña tæng, råi ........... c¸c kÕt qu¶ l¹i.
Muèn nh©n mét tÝch hai sè víi mét sè........., ta cã thÓ .......... sè thø nhÊt víi tÝch cña sè thø hai vµ sè ............


..................................................