Ôn tập các dạng Toán Lớp 3

Họ và tên :
Lớp: 3A .
Bài 1:Đặt tính rồi tính:
20438 + 57806	82495 - 30617	20415 x 3	18531 : 4
	.		.
	.		.
	.		.
Bài 2:Tính giá trị của mỗi biểu thức sau:
a.15000 + 45000 : 3	b.( 15000 + 45000 ) : 3
 .	.
 .	.
 .	.
 c) 213 + 321 x 3 d) 216 : 4 : 2
 .	.
 .	.
 .	.
 e) 12 456 - 6 783 + 21 564 g) 12 : 4 x 9
 .	.
 .	.
 .	.
Bµi 3: T×m y.
a) y + 124 = 316 b) 253 + y = 451
 .	.
 .	.
 .	.
c) y x 5 = 135 d) 7 x y = 217
 .	.
 .	.
 .	.
e) y - 285 = 148 g) 285 - y = 148
 .	.
 .	.
 .	.
h) y : 8 = 216 k) 216 : y = 8
 .	.
 .	.
 .	.
n) ( y : 3 ) + 214 = 324 m) y x 6 = 240 x 2
 .	.
 .	.
 .	.
Bài 4: 
Một hình chữ nhật có nửa chu vi 15cm.Chiều rộng 6cm.Tính diện tích hình chữ nhật đó.
...
...............................................................................................................................................................................................................................................
Bµi 5: Mét h×nh ch÷ nhËt cã chiÒu dµi 18cm vµ gÊp 3 lÇn chiÒu réng. TÝnh chu vi vµ diÖn tÝch cña h×nh ch÷ nhËt ®ã.
...
...............................................................................................................................................................................................................................................
Bµi 6: Mét h×nh ch÷ nhËt cã chiÒu réng 6 cm vµ b»ng chiÒu dµi. TÝnh chu vi vµ diÖn tÝch cña h×nh ch÷ nhËt ®ã.
...
...............................................................................................................................................................................................................................................
Bµi 7: Mét h×nh ch÷ nhËt cã chu vi 56 cm vµ chiÒu réng b»ng chu vi. TÝnh diÖn tÝch cña h×nh ch÷ nhËt ®ã.
...
...............................................................................................................................................................................................................................................
Bµi 8: Mét h×nh vu«ng cã c¹nh 6 dm. TÝnh chu vi vµ diÖn tÝch cña h×nh vu«ng ®ã.
...
...............................................................................................................................................................................................................................................
Bµi 9: Mét s©n ch¬i h×nh vu«ng cã chu vi 36 m. TÝnh diÖn tÝch cña s©n ch¬i ®ã.
...
...............................................................................................................................................................................................................................................
Bµi 10: MÑ n¨m nay 36 tuæi. Tuæi con b»ng tuæi mÑ. Hái mÑ h¬n con bao nhiªu tuæi ?
...
...............................................................................................................................................................................................................................................
Bµi 11: MÑ n¨m nay 36 tuæi. Tuæi con b»ng tuæi mÑ. Hái c¶ hai mÑ con n¨m nay bao nhiªu tuæi ?
...
...............................................................................................................................................................................................................................................
Bµi 12: Trong kho cã 21 356 kg g¹o. Buæi s¸ng ng­êi ta ®· b¸n ®­îc 6 783 kg g¹o, buæi chiÒu b¸n ®­îc 9 453 kg g¹o. Hái trong kho cßn l¹i bao nhiªu ki - l« - gam g¹o ? ( Gi¶i b»ng 2 c¸ch)
...
...............................................................................................................................................................................................................................................
...
...............................................................................................................................................................................................................................................
Bµi 13: Mét cöa hµng cã 15 000 m v¶i hoa. Cöa hµng ®· b¸n ®­îc sè v¶i ®ã. Hái cöa hµng cßn l¹i bao nhiªu mÐt v¶i hoa ?
...
...............................................................................................................................................................................................................................................
Bµi 14: §Æt ®Ò to¸n theo tãm t¾t sau råi gi¶i:
Tãm t¾t: 235 viªn bi
 Minh: 45 viªn bi
 ? viªn bi. 
 H¶i:
 §Ò to¸n: 
...
...............................................................................................................................................................................................................................................
Bµi gi¶i
...............................................................................................................................................................................................................................................
Bµi 15: Cã 35 c¸i kÑo chia ®Òu cho 5 em. Hái 8 em th× cÇn cã bao nhiªu c¸i kÑo ®Ó chia ?
	Tãm t¾t: Bµi gi¶i.
...............................................................................................................................................................................................................................................
Bµi 16: Cã 48 häc sinh xÕp thµnh 6 hµng. Hái 4 hµng th× cã bao nhiªu häc sinh ?
	Tãm t¾t: Bµi gi¶i.
...............................................................................................................................................................................................................................................
Bµi 17: Cã 72kg g¹o chia ®Òu vµo 9 tói. Hái cã 40kg g¹o th× chia ®­îc vµo mÊy tói?
	Tãm t¾t: Bµi gi¶i.
...............................................................................................................................................................................................................................................
Bµi 18: Mét ng­êi ®i bé trong 4 giê ®i ®­îc 20km. Hái nÕu ng­êi ®ã ®i 35km th× mÊt mÊy giê ?
	Tãm t¾t: Bµi gi¶i.
...............................................................................................................................................................................................................................................
Bài 19:TÝnh nhanh : 
a) 25 + 63 + 37 + 75 b) 1 + 2 + 3 + 4 + 6 + 7 + 8 + 9
...
...............................................................................................................................................................................................................................................
Bµi 20: T×m mét sè biÕt r»ng nÕu sè ®ã chia cho 2 råi céng víi 15 th× ®­îc 24.
...
...............................................................................................................................................................................................................................................
Bµi 21: TÝnh diÖn tÝch cña h×nh G.
......................................................................................
..........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................
.......................................................................................
 H×nh G
Bµi 22: Mét h×nh ch÷ nhËt cã chu vi b»ng chu vi h×nh vu«ng c¹nh 6cm. ChiÒu dµi h×nh ch÷ nhËt lµ 7cm. TÝnh diÖn tÝch h×nh ch÷ nhËt ®ã.
...
...............................................................................................................................................................................................................................................
...............................................................................................................................................................................................................................................
Bµi 23: Mét h×nh vu«ng cã chu vi b»ng chu vi mét h×nh ch÷ nhËt cã chiÒu dµi 9cm, chiÒu réng 5cm. TÝnh diÖn tÝch cña h×nh vu«ng ®ã.
...
...............................................................................................................................................................................................................................................
...............................................................................................................................................................................................................................................
Bµi 24: Sè lín lµ 18, sè bÐ lµ 6. Hái sè lín gÊp mÊy lÇn sè bÐ ?
...
...............................................................................................................................................................................................................................................
...............................................................................................................................................................................................................................................
Bµi 25: Sè lín lµ 18, sè bÐ lµ 6. Hái sè bÐ b»ng mét phÇn mÊy sè lín ?
...
...............................................................................................................................................................................................................................................
...............................................................................................................................................................................................................................................