35 x 11 + 385 x 45 + 385 x 9 x 6 = 385 + 385 x 45 + 385 x 54 = 385 x (1 + 45 + 54) = 385 x 100 = 38 500

45 x 399 + 35 x 399 + 20 x 399 
= ( 45 + 35 + 20 ) x 399 
= 100 x 399 
= 39900

 = 399 x (45 + 35 + 20)

 = 399 x 100

 = 39 900

45 x 399 + 35 x 399 + 20 x 399 

= ( 45 + 35 + 20 ) x 399 

= 100 x 399 

= 39900

(25 x 4 ) x (35 x 6 ) = 100 x 210 = 21000

25 x 35 x 4 x 6 

= (25 x 4 ) x ( 35 x 6 ) 

= 100 x 210

= 21 000 

25x35x4x6

=(25x4) x (35x6)

=100x210

=21000

\(25\times35\times4\times6\)

\(=\left(25\times4\right)\times\left(35\times6\right)\)

\(=100\times210\)

\(=21000\)

\(25\times35\times4\times6\)

\(=\left(25\times4\right)\times\left(35\times6\right)\)

\(=100\times210\)

\(=21000\)

\(~HT~\)

=25 x 4 x (35 x 6)

=100 x 210

=21000

a) 23*45 -23*35+23*90

= 23* (45-35+90)

= 23*100

= 2300

b) 636/ 6 - 36/ 6

= 600/ 6

= 100

c) 11*607 -607

= 11*607 -607*1

= 607* (11 -1)

= 607*10

= 6070

a) 23 x 45 - 23 x 35 + 23 x 90 

=23 x (45 - 35 + 90)

= 23 x 100

= 2300

b) 636 / 6 - 36 / 6

= (636 - 36) /6

= 600/6

=100

c) 11 x 607 - 607

= 607 x ( 11 - 1)

= 607 x 10

=6070

a) 23*45 -23*35+23*90
= 23* (45-35+90)
= 23*100
= 2300
b) 636/ 6 - 36/ 6
= 600/ 6
= 100
c) 11*607 -607
= 11*607 -607*1
= 607* (11 -1)
= 607*10

 35 × 34 + 34 × 38 + 65 × 75 + 65 × 45

= 34 × (35 + 38) + 65 × (75 + 45)

= 34 × 73 + 65 × 120

= 2482 + 7800

= 10282

~Study well~

#KSJ

35 x 34 + 34 x 38 + 65 x 75 + 65 x 45

= (35 x 34 + 34 x 38) + (65 x 75 + 65 x 45)

= 34 x (35 + 38) + 65 x (75 + 45)

= 34 x 73 + 65 x 120

= 2482 + 7800

= 10282

35 x 34 + 34 x 38 + 65 x 75 + 65 x 45

= (35+38 ) x34 + 65 x ( 75 + 45 )

= 73x 34 + 65 x 120

=2482 + 7800

=10282

học tốt nhớ k cho mình nhé

Ta có:

=\(\dfrac{6x45x11x17}{15x12x34x33}\)

= \(\dfrac{6x15x3x11x17}{15x6x2x17x2x11x3}\)

= \(\dfrac{1}{2x2}\)

=\(\dfrac{1}{4}\)

Những chữ x ở trên là dấu nhân nhé

`[` Tham Khảo `]`

`35 xx 5 - 35 xx 2 + 35 xx7`

`= 35 xx (5-2+7)`

`= 35 xx 10`

`=350`

= 35 × (5 + 7 - 2)

= 35 × 10

= 350

=35×(5-2+7)

=35×10

=350