t tnh v thc hin cc php tnh sau:

1. Cng tr

1) 89,125+215,98 2) 58,55+875,149 3) 42,312+0,2158 4) 40,321+7,145

5) 875,12 - 198,654 6)521,12 - 421,625 7) 521,87 329,698 8) 521,329 321,87

9)521,62 + 984,121 10) 21,328 9,542 11) 587- 132,67 12) 215,369 187,324

2. Nhn chia

1) 12,4 x 21,54 2) 215,1 x 0,123 3) 245,21 x 1,457 4) 114,2 x 21,3

5) 38,52 : 1,2 6) 84,24 : 2,4 7) 43,01 : 1,7 8) 2,691 : 2,3

9) 21,79 x 15,23 10) 12,37 x 1,26 11) 17,89 x 23,17 12) 24,36 x 14,23

13) 41,17 : 2,3 14) 38,409 : 1,77 15) 25,585 : 2,15 16) 45,24 : 15,6

Bi 11: Ba ngi chia nhau mt s tin cng. Ngi th nht hn ngi th hai

l 20% v km ngi th ba l 20%. Hi ngi th hai, th 3 mi ngi c bao

nhiu tin bit s tin cng ca ngi th nht l 360.000.

Bi 12: Mt ca hng bnh ko nhn dp 1-6 h gi cc loi bnh ko 15%

so vi gi bn trc , tuy th ca hng vn cn li 19%. Hi nhng ngy trc

ca hng li bao nhiu phn trm?

Bi 13: Mt ca hng bn m nhn ngy khai trng h gi 10% so vi gi

nh bn. Tuy th ca hng vn cn li 8%. Hi nu khng h gi th ca hng s

c li bao nhiu phn trm?

p s: 20%

Bi 14: Ca hng A v ca hng B cng bn mt loi sn phm vi gi ban u

nh nhau. thu ht khch hng, trn bng thng bo gi, ca hng A h gi bn

i 10% so vi gi ban u, ca hng B h gi 2 ln, mi ln h 5% so vi gi trc

. Nu l khch hng, em s vo ca hng no mua c hng vi gi r hn?

s 1

Bi 1: Em hy vit cu tr li ng ra bi lm ca mnh.

1- Gi tr ca ch s 5 trong s t nhin 4954231 l:

A- 50.000 B- 5000 C- 5 d- 500.000

2- Gi tr ca ch s 4 trong s 1245 mm l:

A- 4mm B- 4cm C- 4dm d- 4m

3- Cho biu thc: A x C = B x C

a- A = B b- A > B c- A < B d- A cha chc

bng B

4- Trong mt thng c ngy u tin v ngy cui cng ca thng u l ngy

th hai. Vy thng l:

a- Thng hai ca

nm thng

b- Thng hai ca

nm nhun

C- 5 d- 500.000

5- ca mt khc g bc th mc phi mt 15 pht. Vy ca mt cy g

thnh 4 khc bc th mc phi mt s pht l:

a- 60 pht b- 45 pht c- 75 pht

(Bit thi gian ca mi mch l nh nhau)

Bi 2: Thay cc ch s a, b thch hp vo aba72 c s c 5 ch s chia ht

cho 2, 5 v 9.

Bi 3: C 3 thng ng du. Nu ly 1/5 s du thng 1 chia u cho hai

thng kia th s du ca 3 thng bng nhau. Nu thng 1 c thm 12 lt na th

s du thng 1 lc ny bng tng s du ca hai thng kia. Hi mi thng lc u

c bao nhiu lt du.

Bi 4: Hy nu cc cch chia hnh ch nht ABCD thnh 4 hnh c din tch

bng nhau.

s 2

Bi 1: Em hy vit cu tr li ng ra bi lm ca mnh.

1- Gi tr ca s 191000

5m l:

A- 19m5dm B- 19m5cm C- 19m50mm d- 19m5mm

2- Gi tr ca s 3 trong 1032289m2 l:

A- 3m2 B- 3 dam2 C- 3 ha d- 3 km2

3- Gi tr ca s 17km234m2 l:

A- 17100

34 km2 B- 17000034m

2 C- 170034m2 d- 17340000m2

4- ln n tng 3 ca mt ngi nh phi bc qua 42 bc cu thang. Vy

ln n tng 6 ca ngi nh cn bc qua s bc thang l:

a- 84 bc b- 105 bc c- 126 bc

(S bc thang gia cc tng l nh nhau)

5- S cc phn s ln hn phn s 1/5 v nh hn phn s 4/5 l:

a- 2 phn s b- C v s cc phn s

a- 60 pht b- 45 pht c- 75 pht

Bi 2: Hy so snh A v B bit:

20072005

2......

97

2

75

2

53

2

31

2

A

v B = 2006

2005

Bi 3: Cch y 10 nm tui b gp 10 ln tui con. 22 nm sau na th tui b

s gp i tui con. Tnh tui ca mi ngi hin nay.

Bi 4: An c 9 quyn v, Bnh c 6 quyn v. Hai bn gp s v ca mnh vi

s v ca Ho ri chia u cho nhau. Ho tnh ra mnh phi tr cc bn 12.000.

Tnh gi tin ca 1 quyn v, bit rng c ba bn gp cng mt loi v.