`@` `\text {Ans}`

`\downarrow`

`69 \times 36 - 38 \times 18`

`= 69 \times 2 \times 18 - 38 \times 18`

`= 18 \times (69 \times 2 - 38)`

`= 18 \times (138 - 38)`

`= 18 \times 100`

`=1800`

=18(69*2-38)

=18*100=1800

=9/4x2/3+16/9x4/3

=18/12+64/36

=54/36+64/36=118/36=59/18

 36/16 x 12/18 + 32/18 x 24/18 

\(=\dfrac{9}{4}\times\dfrac{2}{3}+\dfrac{16}{9}\times\dfrac{4}{3}\)

\(=\dfrac{3}{2}+\dfrac{64}{27}\)

\(=\dfrac{209}{54}\)

9x4x198-6x18x17-36x47

= 7128-1836-1692

= 3600

Biểu thức trên ,ta được:

36*(198-3*17-47)=36*100=3600

3600 tk tui nhe

\(9\cdot4\cdot198-6\cdot18\cdot17-36\cdot47=36\cdot\left(198-47\right)-6\cdot18\cdot17\)

\(=6\cdot\left(6\cdot151\right)-6\left(18\cdot17\right)=6\cdot906-6\cdot306=6\left(906-306\right)=6\cdot600=3600\)

9 x 4 x 198 - 6 x 18 x 17 - 36 x 47

= 36 x 198 - 36 x 51 - 36 x 47

= 36 x (198 - 51 - 47)

= 36 x 100

= 3600  

Đáp án là : 3600

Tks Bạn Rất Nhiều

 36-4x9 = 36 - 36 = 0 Vì số nào nhân với 0 thì cũng bằng 0 nên phép tính đó bằng 0

a.245 x ( 327-18-9) = 245 x 300 = 73500

b. (462 - 62) x 4 = 1600

c. 900 : 9 = 100

d. (12+20) : 4 = 8

462 x 4 - 62 x 4

= 4 x ( 462 - 62 )

= 4 x 400

= 1600

35 : 7 - 21 :7

= ( 35 - 21 ) : 7

=  14 : 7

= 2

( 25 x 36 ) : 9

= 25 x ( 36 : 9 )

= 25 x 4

= 100

245 x 327 - 245 x 18 - 9 x 245

= 245 x ( 327 - 18 - 9 )

= 245 x 218

= 53410

12 : 4 + 20 : 4

= ( 12 + 20 ) : 4

= 24 : 4

Chúc em học tốt \ ( ^ o ^ ) / tick cho nha

245x327-245x18-9x245                           462 x 4 - 62 x 4   

=245x(327-18-9)                                       = ( 462 - 62) x 4

=245x300                                                  = 400 x 4

=73500                                                      = 1600

   35 : 7 - 21 : 7                                             ( 25 x 36 ) : 9    

= ( 35 - 21) : 7                                           = 900 : 9

= 14 : 7                                                     = 100

= 2

12 : 4 + 20 : 4

= ( 12 + 20 ) : 4

= 32 : 4

= 8

\(1235\text{×}6789\text{×}\left(630-315\text{×}2\right)\)

\(=1235\text{×}6789\text{×}\left(630-630\right)\)

\(=1235\text{×}6789\text{×}0=0\)

\(\left(100+67\right)\text{×}67+\left(200-38\right)\text{×}33\)

\(=167\text{×}67+167\text{×}33\)

\(=167\text{×}\left(67+33\right)\)

\(=167\text{×}100=16700\)

\(72+36\text{×}2+24\text{×}3+18\text{×}4+12\text{×}2+168\)

\(=72+72+72+72+24+168\)

\(=\left(72\text{×}4\right)+24+168=288+24+168=480\)

a) \(1235\times6789\times\left(630-630\right)\)

\(=1235\times6789\times0\)

\(=1235\times0\)

\(=0\)

b) \(167\times67+167\times33\)

\(=167\times\left(67+33\right)\)

\(=167\times100\)

=16700

=\(\frac{36.950+36.726+36.324}{\left(29+1\right).15:2-152}\)

=\(\frac{36.\left(950+726+324\right)}{73}\)

=\(\frac{36.2000}{73}\)

=\(\frac{72000}{73}\)

\(\frac{36\times950+18\times726\times2+3\times324\times12}{1+3+5+7+9+....+27+29+31-152}\)

\(=\frac{36\times950+\left(18\times2\right)\times726+324\times\left(12\times3\right)}{\left(31+1\right)\times16\div2-152}\)

\(=\frac{36\times950+36\times726+324\times36}{256-152}\)

\(=\frac{36\times\left(950+726+324\right)}{104}\)

\(=\frac{36\times2000}{104}=\frac{72000}{104}=\frac{9000}{13}\)