Gio viên: Phm Th Hoa
Trưng Tiu hc Đ Đng
KIỂM TRA BÀI CŨ
10
3
:
5
2
4
3
:
5
3
: Tnh ri rt gn:
a)
b)
4
3
:
8
9
2
1
:
4
1
6
1
:
8
1
10
1
:
5
1
10
3
:
5
2
4
3
:
5
3
2
1
:
4
1
: Tnh ri rt gn:
a)
b)
4
3
:
8
9
6
1
:
8
1
10
1
:
5
1
==
×
×
=
15
12
35
43
3
4
5
3
×=
3
10
5
2
×=
==
×
×
=
15
20
35
102
==
×
×
=
24
36
38
49
==
4
2
==
8
6
1
10
5
1
×=
1
2
4
1
×=
1
6
8
1
×=
3
4
8
9
×=
==
5
10
4
5
5
2
3
1
3
3
2
2
4
10
3
:
5
2
4
3
:
5
3
2
1
:
4
1
: Tnh ri rt gn:
a)
b)
4
3
:
8
9
6
1
:
8
1
10
1
:
5
1
==
×
×
=
15
12
35
43
3
4
5
3
×=
3
10
5
2
×=
==
×
×
=
15
20
35
102
==
×
×
=
24
36
38
49
==
×
×
=
4
2
14
21
==
×
×
=
8
6
18
61
1
10
5
1
×=
1
2
4
1
×=
1
6
8
1
×=
3
4
8
9
×=
==
×
×
=
5
10
15
101
4
5
5
2
3
1
3
3
2
2
4
: Tm X
=× X
5
3
7
4
a)
b)
5
1
:
8
1
=X
5
3
:
7
4
=X
=× X
5
3
: Tm X
7
4
a)
b)
5
1
:
8
1
=X
21
20
=X
3
5
7
4
×=X
5
1
:
8
1
=X
1
5
8
1
×=X
8
5
=X
5
2
5
2
Tóm tắt
5
2
5
2
! "
2
2
1
5
2
:
5
2
=
(m )
Đp s!: 1 m
#
2
3
3
2
) ×a
4
7
7
4
) ×b
1
2
2
1
) ×c
23
32
×
×
=
1
28
28
==
#
2
3
3
2
) ×a
4
7
7
4
) ×b
1
2
2
1
) ×c
1
6
6
==
47
74
×
×
=
12
21
×
×
=
1
2
2
==