ĐỀ 4,5.6 _ TOÁN 4 ÔN HÈ

Hä vµ tªn: ....................................
bµi kiÓm tra
Thêi gian: 90 phót

§Ò 4
1,( 2 ®) Mét phÐp nh©n cã thõa sè thø hai lµ 12. NÕu viÕt c¸c tÝch riªng th¼ng cét nh­ phÐp céng th× tÝch chung sÏ lµ 81. T×m tÝch ®óng cña phÐp tÝnh.
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2,( 2 ®)Tæng hai sè lµ 107. NÕu gi¶m sè lín 9 ®¬n vÞ, t¨ng sè bÐ 7 ®¬n vÞ, ta ®­îc sè míi cã tØ sè:
=
.T×m hai sè ®ã.
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3,( 3 ®) B×nh mua 3 quyÓn vë vµ 2 tËp giÊy hÕt 5400 ®ång. Thanh mua 3 quyÓn vë vµ 4 tËp giÊy cïng lo¹i víi B×nh hÕt 7800 ®ång. TÝnh:
a) Gi¸ tiÒn mét quyÓn vë.
b) Gi¸ tiÒn mét tËp giÊy.
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4,( 3 ®) Mét ng­êi mua hai thöa ®Êt h×nh ch÷ nhËt cã chiÒu réng b»ng nhau. DiÖn tÝch thöa lín h¬n diÖn tÝch thöa nhá 12 m
. Chu vi thöa lín h¬n chu vi thöa nhá 6 m. TÝnh diÖn tÝch mçi thöa ®Êt.. BiÕt r»ng chu vi thöa nhá lµ 32 m.
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Hä vµ tªn: ....................................
bµi kiÓm tra
Thêi gian: 90 phót

§Ò 5
1,( 2,5 ®) TÝnh nhanh tæng sau:

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2,( 2 ®) Cho hai sè: 27 vµ 13. H·y t×m sè a sao cho khi thªm a vµo 27, bít a ë 13 ta ®­îc hai sè cã tØ sè lµ

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3,( 2,5 ® MÑ mua vÒ mét tóm v¶i thiÒu. Anh ®Õm sè qu¶ råi nãi: NÕu mçi ng­êi ¨n 4 qu¶ th× thõa 3 qu¶. NÕu mçi ng­êi ¨n 5 qu¶ th× thiÕu 1 qu¶. Hái:
a) Gia ®×nh cã mÊy ng­êi?
b) Tóm v¶i cã bao hiªu qu¶?
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4,( 3 ®) Mét thöa ruéng h×nh b×nh hµnh cã diÖn tÝch lµ 216 m
. §¸y thöa ruéng lµ 18 m. TÝnh chiÒu cao cña thöa ruéng.
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