![](https://rs.olm.vn/images/avt/0.png?1311)
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
a) \(250 + 250 × 2 = 250 + 500 = 750 \\ (250 + 250) × 2 = 500 × 2 = 1 000\)
b)\( 750 – 50 × 5 = 750 – 250 = 500\\
(750 – 50) × 5 = 700 × 5 = 3 500\)
c) \(210 × 4 – 4 × 210 = 840 – 840 = 0\\
3 × (270 : 9) × 0 = 0\)
![](https://rs.olm.vn/images/avt/0.png?1311)
250 x 15 + 250 x 50 + 250 x 35.
= 250 x ( 15 + 50 + 35 ).
= 250 x 100
= 25000.
k mik nha!!
#Học tốt.
\(250\times15+250\times50+250\times35\)
\(=250\times\left(15+50+35\right)\)
\(=250\times100\)
\(=25000\)
#hoktot<3#
![](https://rs.olm.vn/images/avt/0.png?1311)
x + 250 = 250 x 4
x+250=1000
x=1000-250
x=750
tk nha bạn
thank you bạn
![](https://rs.olm.vn/images/avt/0.png?1311)
![](https://rs.olm.vn/images/avt/0.png?1311)
Cau 1 : 250 x 15 + 250 x 50 + 250 x 35 Cau 2 : 248 x 154 - 248 x 54
= 250 x ( 15 + 50 +35 ) = 248 x ( 154 - 54 )
= 250 x 100 = 248 x 100
= 25000 = 24800.
Hoc tot nhe ban !
250 x 15 +250 x 50 +250 x 35 = 25000 , 248 x 154 - 248 x 54 = 24800
![](https://rs.olm.vn/images/avt/0.png?1311)
9817 - 250 -250 + 185
= 9567 - 250 + 185
= 9317 + 185
= 9502
9817 - 250 - 250 + 185
= 9817 - (250 + 250) + 185
= 9817 - (250 x 2) + 185
= 9817 - 500 + 185
= 9317 + 185
= 9502
![](https://rs.olm.vn/images/avt/0.png?1311)
43/250+40/250=83/250
12/25+1/5=120/250+50/250=170/250
=>43/250+40/250<12/25+1/5
![](https://rs.olm.vn/images/avt/0.png?1311)
a) 2 cm2 50 mm2 = 250 mm2
b) 3 dm2 90 cm2 < 4 dm2
Đổi: 3 dm2 90 cm2 = 390 cm2 ; 4 dm2 = 400 cm2
Mà 390 cm2 < 400 cm2 nên 3 dm2 90 cm2 < 4 dm2
c) 2 m2 5 dm2< 250 dm2
Đổi: 2m2 5 dm2 = 205 dm2.
Mà 205 dm2 < 250 dm2 nên 2m2 5 dm2 < 250 dm2