TOAN 6 - Đề Khảo Sát Chất Lượng Đầu Năm

TRNG THCS L QUANG CNG
H v tn: _____________________________
Lp: 6____ STT: ____
Ngy kim tra: 22 /8 /2013
im
KHO ST CHT LNG U NM

NM HC 2013-2014
TON 6
Thi gian lm bi: 45 pht
Li ph ca thy c
kin ca CMHS
Bi 1 (4 im). Tnh ( cu c v d tnh bng cch thun tin nht)

a)
2 3
3 5
b)
7 1
10 5
c)
7 5 1 7

12 9 12 9
d)
7 3 5 3
: :
19 5 19 5
Bi 2 (2.0 im). Tm x:
a) 41 - (2x - 5) = 6
b) 4,8 . 5 : x = 150
Bi 3 (3 im). Ti mt kho go, ln th nht ngi ta xut i 25 tn go, ln th hai ngi

ta xut i 20 tn go. S go cn li trong kho bng 97% s go c lc u. Hi lc u
trong kho c bao nhiu tn go ?
Bi 4 (1.0 im). Tnh nhanh
1 5 11 19 29 41 55 71 89

2 6 12 20 30 42 56 72 90
Ghi ch: Hc sinh khng c s dng my tnh trong khi lm bi.

BI LM
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TRNG THCS L QUANG CNG
P N KHO ST CHT LNG U NM

NM HC 2013-2014
TON 6
Thi gian lm bi: 45 pht
p n
Bi
2 3 10 9 19

3 5 15 15 15
7 1 7 2 5 1
b)
10 5 10 5 10 2
7 5 1 7
7 1
5 7
8 12 2 4 6
c) 2
12 9 12 9 12 12 9 9 12 9 3 3 3
7 3 5 3 7 3 5 3
7 5 3 12 5 20
d) : : : : : x
19 5 19 5 19 5 19 5 19 19 5 19 3 19
a) 41 - (2x - 5) = 6
a)
1
(4 im)
2x 5 41 6
2x 35 5
x 40 : 2
x 20
2
(2 im)
b) 4,8 . 5 : x = 150
24 : x 150
x 24 :150
x 0,16
S go xut i trong hai ln l:

25 + 20 = 45 (tn)
S go xut i chim s phn trm s go ban u l:
100 - 97 = 3 (%)
S go lc u trong kho c l:
45 : 3 X 100 = 1500 (tn)
p s: 1500 tn
3
(3 im)
im
0.5x2
0.5x2
0.25x4
0.25x4
0.25
0.25
0.25
0.25
0.25
0.25
0.5
0.5
0.5
0.5
0.5
0.5
0.5
1 5 11 19 29 41 55 71 89

2 6 12 20 30 42 56 72 90
1
2
1
1
1
1
1
1
) + (1- ) + (1- ) + (1- ) + (1- ) +
6
12
20
42
30
56
1
1
(1- ) + (1- )
72
90
1 1 1
1
1
1
1
1
1
= 1x9 ( + + + + + + + + )
2 6 12 20 30 42 56 72 90
1
1
1
1
1
1
1
1
1
= 9-(
)
1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
= 9-(1- )
2 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 10
1
= 9 (1 - )
10
9
81
=9- =
10 10
= (1- ) + (1- ) + (1-
4
(1 im)
0.25
0.25
0.25
0.25

TOAN 6 - Đề Khảo Sát Chất Lượng Đầu Năm

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TOAN 6 - Đề Khảo Sát Chất Lượng Đầu Năm

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TRNG THCS L QUANG CNG

KHO ST CHT LNG U NM

Bi 1 (4 im). Tnh ( cu c v d tnh bng cch thun tin nht)

Bi 3 (3 im). Ti mt kho go, ln th nht ngi ta xut i 25 tn go, ln th hai ngi

Ghi ch: Hc sinh khng c s dng my tnh trong khi lm bi.

TRNG THCS L QUANG CNG

P N KHO ST CHT LNG U NM

S go xut i trong hai ln l:

= (1- ) + (1- ) + (1-

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