kết quả là 0

328 ×17×( 1859-326)×( 49×24-98×12)=327x17x1533x0

                                                      =0

biết rồi

!@#$%^&*(*&^%$#@!@#$%^&*(*&^%$#@!@#$%^&*(*&^%$#@!@#$%^&*(*&^%$#@!@#$%^&*(*&^%$#@!@#$%^&*(

123,45 + 23,56 +76,44 + 54,55

= (123,45 + 54,55) + (23,56 + 76,44)

= 178 + 100

= 278

456 x 45 + 456 x 10 + - 456 x 55

=456 x (45 +10-55)

=456 x 0

=0

2,5 x 8,5 + 7,5 x 8,5 

=8,5 x (2,5 +7,5)

= 8,5 x 10

= 85

86 x 5 + 86 x 4 + 86

= 86 x (5+4+1)

= 86 x10

860

`@` `\text {Ans}`

`\downarrow`

`2023 \times 14 + 2023 \times 83+97`

`= 2023 \times (14+83) + 97`

`= 2023 \times 97 + 97`

`= 196231 +97`

`= 196328`

`78 \times 31+78 \times 24+78 \times 17+78 \times 22 \times 72`

`= 78 \times (31+24+17+22 \times 72)`

`= 78 \times (31+24+17+1584)`

`= 78 \times 1656`

`= 129168`

`371 \times 69+371 \times 14+629 \times 83`

`= 371 \times (69+14) + 629 \times 83`

`= 371 \times 83 + 629 \times 83`

`= 83 \times (371+629)`

`= 83 \times 1000`

`= 83000`

`91 \times 51+49 \times 163-49 \times 72`

`= 91 \times 51 + 49 \times (163-72)`

`= 91 \times 51+49 \times 91`

`= 91 \times (51+49)`

`= 91 \times 100`

`= 9100`

`3 \times 12 \times 17 + 4 \times 9 \times 81 + 2 \times 6 \times 6`

`= 9 \times 4 \times 17 + 4 \times 9 \times 81 + 4 \times 9 \times 2`

`= 9 \times 4 \times (17+81+2)`

`= 36 \times 100` 

`= 3600`

`42 \times 17 + 58 \times 83 \times 42 \times 83 + 42 \times 83 + 17`

`= 17 \times (42+58) + 42 \times 83 \times (58 \times 83 +1)`

`= 17 \times 100 + 3486 \times 4815`

`= 1700 + 16785090`

`= 16786790`

24x5+12x8+36x15+12x17+24x10

=12x10+12x8+12x45+12x17+12x20

=12x(10+8+45+17+20)

=12x100=1200
 

24 x 5 + 12 x 8 + 36 x 15 + 12 x 17 + 24 x 10

= 24 x (5 + 10) + 12 x (8 + 17) + 36 x 15

= 24 x 15 + 12 x 25 + 36 x 15

= 12 x 30 + 12 x 25 + 12 x 45

= 12 x (30 + 25 + 45)

= 12 x 100

= 1200

a) 2 x 12 x 43 + 3 x 32 x 8 + 25 x 6 x4

=(2 x12) x43+(3 x8) x32+(6 x4) x25

=24 x43+24 x32+ 24 x25

=24 x(43+32+25)

=24 x100

=2400

b) 78 x 31 + 78 x 24 + 17 x 78 + 28 x 78

=78x(31+24+17+28)

=78x100

=7800

thanks bạn nha

\(\frac{\left(120+60\right)}{12}=\frac{120}{12}+\frac{60}{12}=10+5=15\)

\(78\cdot31+78\cdot17+78\cdot24+22\cdot72=78\left(31+17+24\right)+22\cdot72\)

\(=78\cdot72+22\cdot72=72\left(78+22\right)=72\cdot100=7200\)

\(997+86=997+\left(83+3\right)=\left(997+3\right)+83\)

\(=1000+83=1083\)

\(5\cdot25\cdot2\cdot37\cdot4=\left(5\cdot2\right)\cdot\left(25\cdot4\right)\cdot37\)

\(=10\cdot100\cdot37=37000\)

\(558+336+442+664=\left(558+442\right)+\left(336+664\right)\)

\(=1000+1000=2000\)

5 x 25 x 2 x 37 x 4

= ( 5 x 2 ) x ( 25 x 4 ) x 37

= 10 x 100 x 37

= 1000 x 37

= 37000