on toan so lop 5 HKI

ON TAP TOAN SO Hoù teõn:.........................(5/3)
1/ t tớnh ri tớnh
a) 318,46 + 56,79 85, 145 + 255 683 + 7,19 32,84 +189
.......................................................................................
.......................................................................................
......................................................................................
b) 80,01 19,98 47,74 28,567 20, 5 8,85 2004 196,8
.......................................................................................
.......................................................................................
......................................................................................
c) 80,5 x 3,2 0,81 x 105 69,2 x 0,98 108,5 x 2,04
.......................................................................................
.......................................................................................
......................................................................................
.......................................................................................
.......................................................................................
......................................................................................
d) 133,11 :34 176,4 :35 85,68 :36 0,85 : 2,5
.......................................................................................
.......................................................................................
......................................................................................
.......................................................................................
.......................................................................................
......................................................................................
) 837 : 18 627 :25 108 : 22,5 11,18 :21,5
.......................................................................................
.......................................................................................
......................................................................................
.......................................................................................
.......................................................................................
......................................................................................

2/ Tớnh giỏ tr biu thc:
a) 96,48 - 38,19 + 215 910,5 + 4065 - 2365 36,25 x 2,3 - 49,44 : 12
.......................................................................................
.......................................................................................
......................................................................................
b) 23,8 + 13,02 x 1,03 87,5 - 21,6 x 2,05 119,76 : 24 + 24 x 2,5
.......................................................................................
.......................................................................................
......................................................................................
c) ( 52,01 - 10,89 ) x 0,5 114,75 : 27 x 6,4 18,5 x ( 2,32 + 5,48 ) - 6,8
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
d) 720 : 265 : 5 8,65 x 16,72 : 4 46,3 x 2 - 59,04 : 9
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
e) 65,07 + 323 - 23 199,6 : 25 : 16 8,16 - ( 1,32 + 3,48 ) : 2
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
g) 25,92 : 7,2 + 54 : 5 12,3 - 0,85 : 25 509 - ( 45,3 x 21 - 603 )
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
3/ Tìm y:
a) 12,3 + y = 20 y x 7,25 = 72,5 3,5 + y = 14 - 0,38
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................

b) 32,68 x y = 99,3472 63,5 - y = 47,18 6,7 - y = 0,45 x 3
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
c) y - 613 = 218 28,8 : y = 8 25,6 : y = 1,6 x 4
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
d) y : 3,1 = 2,46 2,1 x y = 10 - 1,6 3,75 : y = 15 : 10
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
4/ Tìm
b
a
:
a)
b
a
+
9
7
=
3
13

8
15
-
b

a
=
4
3

6
5
x
b
a
=
3
1
.................................................................................................................................................
.................................................................................................................................................
b)
15
4
+
b
a
=
3
2

9
4
:
b
a

=
3
2

b
a
-
10
9
=
2
1
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
........................................................…………………………………………...............................
........................................................…………………………………………...............................
c)
13
12
x
b
a
=
39
4

b
a
-

6
5
= 2 6 :
b
a
=
5
6
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
........................................................…………………………………………...............................
........................................................…………………………………………...............................
d) 2 -
b
a
=
3
5

4
1
x
b
a
=
2
1

b

a
: 3 =
13
12
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
…………………………………………...............................………………................................
…………………………………………...............................………………................................
5/ Điền số
a) 3m
2
14dm
2
= .............dm
2
; 6m
2
8dm
2
= ..............m
2
; 2cm
2
5mm
2
= .........cm
2
1ha = ....................m
2

; 2,345ha = .................m
2
; 805m
2
= ...............ha
b) 12,44m = ........m.......cm ; 7,4dm = ........dm.......cm ; 3,45km = ..............m
5,38km
2
= .............ha; 16,4m
2
= .......m
2
......dm
2
; 3cm
2
4 mm
2
= .........cm
2
c) 4 tấn 450kg =................tấn ; 210kg = ...........tạ ; 2 tấn 4 tạ = ...............kg
2,9 tạ= .................kg ; 800g =.............kg ; 23kg 45g = ..............g
6) Lãi suất tiết kiệm trong 1 tháng của ngân hàng là 0,85%.
Một người gởi tiết kiệm 25 000 000 đồng thì sau 1 tháng cả tiền gởi lẫn tiền lãi là bao nhiêu?
........................................................…………………………………………...............................
........................................................…………………………………………...............................
…………………………………………......................................................................................
…………………………………………......................................................................................