Kiểm tra Số học 6 - Tiết 39 (Bài số 2 - Chương I) - HS làm

Trờng THCS Ng Lộc
* Đề A :
Kiểm tra 45 phút - chơng i -

Bài số 2
Môn : Số học 6
Họ và tên : ........................................................................ - Lớp : ....................................
Điểm Nhận xét của Thầy Cô giáo
I. Trc nghim (3 im):
Khoanh trũn vo ch cỏi ng trc kt qu m em chn l ỳng :
Cõu 1 : S 90 phõn tớch ra tha s nguyờn t cú kt qu l:
A. 2
2
.3
2
.5 B. 2.3
2
.5 C. 2
2
.3.5 D. 2.3.5
2
Cõu 2 : Bi chung nh nht ca 12, 15 v 60, l :
A. 240 B. 180 C. 60 D. 360
Cõu 3 : Tp hp cỏc c chung ca 3 v 9, l :
A. {1; 3; 9} B. {0; 1; 3} C. {1; 3} D. {0; 1; 3; 9}
Cõu 4 : Mi dũng sau õy cho ta ba s t nhiờn liờn tip tng dn l :
A. a; a + 1; a + 2, vi a

N. B. c; c + 1; c + 3, vi c

N.

C. n - 1; n; n + 1, vi n

N. D. d + 3; d + 2; d + 1, vi d

N.
Cõu 5 : Cỏch tớnh ỳng l :
A.
6484.2
22
==
B.
2 2
2.4 8 16
= =

C.
168.24.2
2
==
D.
2
2.4 2.16 32
= =

Cõu 6 : Toồng : 3.5 + 2.5 cú kt qu bng :
A. 25 B. 60 C. 5 D. 15
II. T lun (7 im) :
Cõu 7 : (2 im) Tỡm x bit :
a) x + 12 = 29 b) x
2

- 72 : 36 = 23
Cõu 8 : (2 im) Cho A = 999 : 111 + 3
5
: 3
2
.
a. Tớnh giỏ tr ca biu thc A.
b. Phõn tớch kt qu trờn ra tha s nguyờn t ?
Cõu 9 : (2 im) Nhõn ngy sinh nht ca con, m cú 40 cỏi ko v 32 cỏi bỏnh, d
nh s chia u vo cỏc a, mi a gm cú c bỏnh v ko.
a. Cú th chia c nhiu nht bao nhiờu a ?
b. Mi a khi ú cú bao nhiờu cỏi bỏnh, bao nhiờu cỏi ko ?
Cõu 10 : (1 im) Tỡm n

N, sao cho (n + 3)

(n 1).
Bài làm (dành cho phần tự luận)
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Trờng THCS Ng Lộc
* Đề B :
Kiểm tra 45 phút - chơng i -

Bài số 2

Môn : Số học 6
Họ và tên : ........................................................................ - Lớp : ....................................
Điểm Nhận xét của Thầy Cô giáo
I. Trc nghim (3 im):
Khoanh trũn vo ch cỏi ng trc kt qu m em chn l ỳng :
Cõu 1 : S 180 phõn tớch ra tha s nguyờn t cú kt qu l:
A. 2
2
.3
2
.5 B. 2.3
2
.5 C. 2
2
.3.5 D. 2.3.5
2
Cõu 2 : Bi chung nh nht ca 12, 15 v 180, l :
A. 240 B. 180 C. 60 D. 360
Cõu 3 : Tp hp cỏc c chung ca 3 v 6, l :
A. {0; 1; 2; 3; 6} B. {1; 3} C. {1; 2; 3} D. {1; 2; 3; 6}
Cõu 4 : Mi dũng sau õy cho ta ba s t nhiờn liờn tip gim dn l :
A. a; a + 1; a + 2, vi a

N. B. c; c + 1; c + 3, vi c

N.
C. n - 1; n; n + 1, vi n

N. D. d + 3; d + 2; d + 1, vi d

N.
Cõu 5 : Cỏch tớnh ỳng l :
A.
2 5
2 .4 2 32
= =
B.
2 2
2 .4 4 16
= =

C.
2
2 .4 4.4 16
= =
D.
( )
2
2
2 .4 2.4 64
= =
Cõu 6 : Hiu : 3.5 - 2.5 cú kt qu bng :
A. 25 B. 60 C. 5 D. 15
II. T lun (7 im) :
Cõu 7 : (2 im) Tỡm x bit :
a) x - 12 = 29 b) x
2
+ 98 : 14 = 23
Cõu 8 : (2 im) Cho A = 888 : 111 + 2
5

: 2
2
.
a. Tớnh giỏ tr ca biu thc A.
b. Phõn tớch kt qu trờn ra tha s nguyờn t ?
Cõu 9 : (2 im) Toỏn v Vn tp chia u s bi ca nhau vo cỏc hp. Toỏn cú 32
viờn bi trng, Vn cú 40 viờn bi xanh. Hai bn mun mi hp gm cú c bi trng v bi
xanh.
a. Cú th chia c nhiu nht bao nhiờu hp ?
b. Mi hp khi ú cú bao nhiờu bi trng, bao nhiờu bi xanh ?
Cõu 10 : (1 im) Tỡm n

N, sao cho (n + 6)

(n 3).
Bài làm (dành cho phần tự luận)
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