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1) 58× 75+ 58× 50 -58 × 25
= 58( 75 + 50 - 25 )
= 58 . 100
= 5800
1/ 58 x 75 + 58 x 50 - 58 x 25
= 58 x ( 75 + 50 - 25 )
= 58 x 100
= 5800
2/= \(2\frac{3}{5}-\frac{3}{5}\cdot\frac{11}{84}\)
\(=\frac{13}{5}-\frac{3}{5}\cdot\frac{11}{84}\)
\(=\frac{13}{5}-\frac{11}{140}\)
\(=\frac{364-11}{140}\)
\(=\frac{353}{140}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
58 x 75 + 25 x 58 - 58 x 28
= 58 x ( 75 + 25 + 28 )
= 58 x 128
= 7424
58 x 75 + 25 x 58 - 58 x 28
= 58 x (75 + 25 - 28)
= 58 x 72
= 4176
![](https://rs.olm.vn/images/avt/0.png?1311)
\(58\times57+58\times50-58\times25=58\times\left(57+50-25\right)=4756\)
58 × 57 + 58 × 50 - 58 × 25
= 58 × (57 + 50 - 25)
= 58 × 82
= 4756
![](https://rs.olm.vn/images/avt/0.png?1311)
3.23 + 18 : 23 . 22= 3 . 8 + 18 : 8 . 4 = 21 +2,25.4=21+9=30
407+ [(180- 160) : 4 + 32 ]=407+ [(180- 160) : 4 + 9 ]=407+14=421
58 . 75 + 58 . 50 - 58 . 25=58 . (75 + 50 - 25)=58.100=5800
khỏi chép đề nha
a) = 32,768 + 18 : 8 . 4
= 32,768 + 2,25 . 4
= 32,768 + 9
= 41,768
b) = 407 + ( 20 : 4 + 9 )
= 407 + ( 5 + 9 )
= 407 + 14
= 421
c) = 58 . ( 75 + 50 - 25 )
= 58 . 100
= 5800
tk nha
![](https://rs.olm.vn/images/avt/0.png?1311)
a. 42 . 46 + 42 . 52
= 42 . (46+52)
= 16 . 98
= 1568
b. -75+58+(-25)
= [-75+(-25)]+58
= -100+58
= -42
c. -4 . 5 . (-25)
= [-4 . (-25)] . 5
= 100 . 5
= 500
Ta có : 58 x 75 + 58 x 50 - 58 x 25
= 58 x ( 75 + 50 - 25 )
= 58 x 100
= 5800
bang 5800