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![](https://rs.olm.vn/images/avt/0.png?1311)
25dam x 2 = 50dam 48m : 4 = 12m
18hm x 4 = 72hm 84dm : 2 = 42dm
82km x 5 = 410km 66mm : 6 = 11mm
![](https://rs.olm.vn/images/avt/0.png?1311)
25 m x 2 = 50 m
15 km x 4 = 60 km
34 cm x 6 = 204 cm
36 hm : 3 = 12 hm
70 km : 7 = 10 km
55 dm : 5 = 11dm
25m x2 =50 m
15km x4 =60 km
34 cm x6= 204cm
96cm :3 =32 cm
36hm :3 =12 hm
70km :7 =10 km
55dm :5 =11 dm
![](https://rs.olm.vn/images/avt/0.png?1311)
23 + 42 = 65
73 - 58 = 15
23 - 10 + 34 = 67
72 : 6 = 12
35 x 2 = 70
48 : 8 x 2 = 3
\(23+42=65\)
\(73-58=15\)
\(23-10+34=47\)
\(72:6=12\)
\(35\times2=70\)
\(48:8:2=3\)
![](https://rs.olm.vn/images/avt/0.png?1311)
phep 1=49
phep 2 hinh nhu sai de
phep 3 lay(34571-34567)/2
phep 4 =505
tinh bieu thuc=67
![](https://rs.olm.vn/images/avt/0.png?1311)
x + 23 = 43 x 2
=> x + 23 = 86
=> x = 86 - 23
=> x = 63
Chúc bn học giỏi!
![](https://rs.olm.vn/images/avt/0.png?1311)
253 + 10 x 4 = 253 + 40 = 293
41 x 5 - 100 = 205 – 100 = 105
93 – 48 : 8 = 93 – 6 = 87
253 + 10 x 4 = 253 + 40 = 293
41 x 5 - 100 = 205 – 100 = 105
93 – 48 : 8 = 93 – 6 = 87
---------------------HỌC TỐT-------------------
![](https://rs.olm.vn/images/avt/0.png?1311)
25+15+10-50
40+10-50
50-50
0
(23+37)+(39+21)+(34+26)
60+60+60
180