\(\text{-75.(18-65)-65.(75-18)}\)

\(=-75.18+75.65-65.75+65.18\)

\(=\left(-75+65\right).18+75.\left(65-65\right)\)

\(=-10.18+75.0\)

\(=-180\)

học tốt

    -75.(18-65)-65.(75-18) 

= −75.18 + 75.65 − 65.75 + 65.18 

= −75 + 65 .18 + 75. 65 − 65 

= −10.18 + 75.0 

= −180

\(\left(-75\right)\left(18-65\right)-65\left(75-18\right)\)

\(=\left(-75\right).18-\left(-75\right).65-65.75+65.18\)

\(=\left(-75\right).18+75.65-65.75+65.18\)

\(=18.\left[\left(-75\right)+65\right]+\left(75.65-65.75\right)\)

\(=18.\left(-10\right)=-180\)

P/s: Hoq chắc

\(-\left(-2010\right)+36.41-36.\left(-59\right)+\left(-2010\right)\)

\(=2010+\left(-2010\right)+36.\left[41-\left(-59\right)\right]\)

\(=36.100=3600\)

  -(-2010) +36.41 - 36. (-59) + (-2010)

= 2010 + 1476 -2124 -2010

= (2010-2010) + (1476-2124)

= -648

   -75.(18-65)-65.(75-18)

= -75. (-47) - 65. 57

= 3525 - 3705

= -180

-(-2010) + 36.41 - 36.(-59) + (-2010)

= 2010 + 36.41 - 36.(-59) + (-2010)

= (-2010 + 2010) + 36.(-59 + 41)

= 0 + 36.(-18)

= 0 + (-648)

= -648

-75.(18 - 65) - 65.(75 - 18)

-75.18 - (-75).65 - 65.75 - 65.18

mk chỉ giải đc đến đây th, bn thông cảm nha

\(35\cdot34+70\cdot38+65\cdot75+65\cdot35\)

\(=35\cdot34+35\cdot76+65\cdot\left(75+35\right)\)

\(=35\cdot\left(34+76\right)+65\cdot110\)

\(=35\cdot110+65\cdot110\)

\(=110\cdot\left(65+35\right)\)

\(=110\cdot100=11000\)

35 . 34 + 70 . 38 + 65 . 75 + 65 . 35

= 35 . 34 + 35 . 76 + 65 . 75 + 65 . 35

= 35 . (34 + 76) + 65 . (75 + 35)

= 35 . 110 + 65 . 110

= 110 . (35 + 65)

= 110 . 100

= 11000

~Std well~

\(35\cdot34+70\cdot38+65\cdot75+65\cdot35\)

\(=35\cdot34+35\cdot76+65\cdot75+65\cdot35\)

\(=35\cdot\left(34+76\right)+65\cdot\left(75+35\right)\)

\(=35\cdot110+65\cdot110\)

\(=110\cdot\left(35+65\right)\)

\(=110\cdot100=11000\)

a) =-(-2010)+(-2010)+36*54-36*(-59)=2010+(-2010)+ 36*(54-59)=0+36*5=.....
b

Kết bạn ko

\(=\left(32\cdot57+18\cdot32\right)+75\cdot68\\ =32\cdot\left(57+18\right)+75\cdot68\\ =32\cdot75+75\cdot68\\ =75\cdot\left(32+68\right)=75\cdot100=7500\)

32.57+75.68+18.32 

= 32. (57+18) + 75.68 

= 32. 75 + 75. 68

= (32+68) .75

= 100 .75 

= 7500 

A)

-(2789-435)+(1789-1435)

= -(2000+789-435)+(1000+789-1000-435)

= -2000-789+435+1000+789-1000-435

= -2000 +(789-789)+ (1000-1000) +(435-435)

= -2000

B)

-(-2010)+36.41-36.(-59)+(-2010)

= 2010 +36. (41+59)- 2010

= (2010-2010) +36. 100

= 3600

C)

-75.(18-65)-65.(75-18)

= -75.18+75.65-65.75+65.18

=18. (-75+65)

= 18. (-10)

= -180

a)-2000

b)3600

c)-7230

\(-\left(2789-435\right)+\left(1789-1435\right)\)

\(=-\left(1000+1000+789-435\right)+\left(1000+789-1000-435\right)\)

\(=-1000-1000-789+435+1000+789-1000-435\)

\(=-2000\)

32 . 57 + 75 . 68 + 18 . 32

= 1824 + 5100 + 576

= 7500

Tiếp:

= 1824 + 5100 + 576

= 1824 + 576 + 5100

= 2400 + 5100

= 7500

1. Tính nhanh

a) - (2789 - 435) + (1789 - 1435 )

= - 2789 + 435 + 1789 - 1435

= ( - 2789 + 1789 ) + ( 435 - 1435 )

= (-1000) + (-1000) = - 2000

Vậy : - (2789 - 435) + (1789 - 1435 ) = -2000

b) (-2010)+36.41-36.(-59)+(-2010)

= (-2010) + 36.[ 41 - (-59)] + (-2010)

=(-2010) + 36. 100 + (-2010)

= (-2010) + 3600 + (-2010)

= 1590 + (-2010)

=-420

Vậy : (-2010)+36.41-36.(-59)+(-2010) = -420

P/s : Hình như đề bài sai ( câu b)

a) - (2789 - 435) + (1789 - 1435 )

= - 2789 + 435 + 1789 - 1435

= ( - 2789 + 1789 ) + ( 435 - 1435 )

= (-1000) + (-1000)

= - 2000

Tham khảo: Câu hỏi của bui xuan dieu - Toán lớp 6