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giáo án số học 6( từ tiết 79-tiết 87)

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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 88
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 89
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T F*"723//H,-/0$1+4Q*
%&*/H=*+#"-
T F/"%X($)
7
3
5
2

+
.+,*)/"4#$//"U&7
F/"/=U-'U&7
Vb
6$+*.
bUH=*
] '"=0$1+4Q*758$64//'"564
"H#$U)0$123/0$1+4Q*758$
64//'"564

35
15
35
14
7
3
5
2

+=


+
b_
`a`_a
f
35
1
35
)15(14

=
−+

Vb
R
@
15
4
15
10
15
4
3
2
+

=+

R_
`_a`Ra
f

5
2
15
6
15
410

=

=
+−

K
H@
10
9
15
11
10
9
15
11

+=

+
bZ
`Ka`ba
f
30

)27(22
30
27
30
22
−+
=

+

6
1
30
5

=

=

b
/@
3
7
1
3
7
1
+

=+



f
7
20
7
21
7
1
=+


Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 90

F[$//%X($)?<7":1$
0$1  23/ /4.*  "  '"5  64  9"4*
/$&*758$64
F*.%&U'"H#$U)
$=*/4F/"U&7H&IK/J
(`Ka
.KUH=*
] '"H#$",L`Ka
R
/@
39
14
39
18
39

14
13
6

+=

+
f
39
4
39
)14(18
=
−+

K
(@
)5()9(
9
2
5
4
18
4
5
4
18
4
5
4


+=

+=

+
f
45
26
45
)10(36
45
10
45
36
=
−+
=

+

)+4.*I
D>RK'"@
A&II>KL@
\Q(5$>`JaJf@%&4?4*
@
7
3
7
4


+

gTR
H@
22
3
22
15

+

g
11
8

/@
5
3
g
5
1
3
2

+
(@
4
3
6

1

+
g
7
4
14
1

+
F1$/5Q$",)/")'"<'X"J
?$*.J66"
F+,H=*?23/*")7>H=*'"$)@
*"H&I`Ka
";f
3
2
2
1

+
=*?h/$=;
U&64&?*//646$>":15
+<&+=%&//*?h7&<7/".@
")+4.*"<"7
L0$=
@
7
3
7

4

+

fTR
H@
22
3
22
15

+

`
11
8

/@
5
3
a
5
1
3
2

+
(@
4
3

6
1

+
`
7
4
14
1

+
Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 91

@
5
1

YH@
5
1
Y/@
6
1

(@
6
1
Y<@
6

7

/".
6
1

P$/5Q$*="X/")6/".
*?h;U&
6
1

V
)+4.*_
ijO^F!kG>K'"@
• ./"$4./0$123//4.*'"564
• "$1?$*.'"564>$/"#@?,-/9"U&7"2)/90$=
A&5)'%Q"&A&IbJI_>KL@
A&_lJ_JZJRJbA`RKa
Ngày soạn: Ngày dạy:
lZ
mP!
 !
• H%5)($)*0$123//4.*"'"564/$&*758$%&9"4*/$&*758$
• 91:2*/4.*'"564""%&+$*
• 1",/"5);<+2)/+#7/$=//'"564+#/4.*"5%&+$*>/
"#?$*.//'"564?,-/9"/4.*J?$*.90$=@
ABACD EF !FGE 
• FKH=*'"$)*"H&K>H@A+#/"-?&/"-
• H=*"7JH$%H=*
 !MNOPE

)+4.*/$="5Q1 )+4.*/$=?&
)+4.*R
L !BMAG S>'"@
L#7?R
R $0$123//4.*"'"564/$&*
758$64F/4*",/4#*0$
K ",:H&5)'Ib>J(@JKL@
X"4#*
R"H#$0$123/F/4*",/
4#*0$J/=U-'"5);<
K@",:H&5)'
/@
0
7
1
7
1
42
6
21
3
=+

=+

Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 92

/@
42

6
21
3
+

(@
21
15
24
18

+

L#7?K
R $  0$1  2/  /4.*  "  '"5  64
9"4*/$&*758$64
K ",:H&I_`KLa
c7;H
@;f
4
3
2
1
+

H@
30
19
6
5

5
x

+=

(@
)4()7(
7
5
4
3
21
15
24
18

+

=

+

Kl
f
28
41
28
20
28
21


=

+

K"H#$0$123/J/=U-'"5);<
@;f
4
1
4
3
4
2
4
3
2
1
=+

=+

H@
30
19
6
5
5
x

+=


30
19
30
25
5
x

+=

30
6
5
x
=

5
1
5
x
=
;fR
)+4.*K
mP!>Kl'"@
A&R
4.*//'"5646$
@
5
2
6

1
+
H@
4
7
5
3

+
/@
6
5
)2(

+−
A&K
>A&_A@4.*//'"564
@
8
5
8
1

+

.bUH=*U&7+4Q*"-&b/5$
JHJ/
R@
30
17

30
12
30
5
5
2
6
1
)6()5(
=+=+

KH@
20
23
20
35
20
12
4
7
5
3
)5()4(

=

+=

+
b

/@
6
17
6
5
6
12
6
5
)2(

=

+

=

+−
.bUH=*U&7+4Q*"-&b/5$
JHJ/
R@
8
5
8
1
8
5
8
1


+

=

+

Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 93
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 96
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"5);<"<'/4.*'"564/X"
Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 97

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12
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b
a
d
c
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c
b
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+=+
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+
q
p
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c
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a
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"$1JHJ/J(J'J0∈dYHJ(J0≠Z
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 98

F"<<74#*/$="Q$'"564
/X"/"5*"%&9" '
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1
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7
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7
5
5
3
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1
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2
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++

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3
7
5
7
2
4
1
4
3
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5
3
7
5
7
2
4
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+






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15
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15
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19
4
23
8
23
15
17
15
17
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 99

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6
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7
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 100
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 106
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 107
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 108
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 109
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
Trang 110
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Lª Quang TuyÕn Trêng THCS T«n ThÊt ThuyÕt
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