a)  ( 135 − 35 ) . ( − 37 ) + 37 ( − 41 − 59 ) = − 100.37 + 37 − 100 = 37 − 100 − 100 = 37 − 200 = − 7400.

b)  − 65 ( 87 − 17 ) − 87 ( 17 − 65 ) = − 65.87 + 65.17 − 87.17 + 87.65 = 87.65 − 65.87 + 17 65 − 87 = 0 + 17. − 22 = − 374.

c)  3 ( − 2 ) − ( − 8 ) . ( − 7 ) − ( − 2 ) . ( − 5 ) = − 6 + 8 . − 7 + 2 = 2. − 7 + 2 = − 12

a)135-35.(-37)+37.(-42-48)=-4490

b)-65.(87-17)-87.(17-65)=-374

a) Ta có: \(\left(-65\right)\cdot\left(87-17\right)-87\cdot\left(17-65\right)\)

\(=-65\cdot87+65\cdot17-87\cdot17+87\cdot65\)

\(=17\left(65-87\right)=17\cdot\left(-22\right)=-374\)

b) Ta có: \(\left(135-35\right)\cdot\left(-37\right)+37\cdot\left(-42-58\right)\)

\(=\left(-100\right)\cdot37+37\cdot\left(-100\right)\)

\(=37\left(-100-100\right)=37\cdot\left(-200\right)=-7400\)

a. 4.37.25.50.12

  =(4.25).(50.12).37

  =100.600.37

  =2220000

\(a.\left(4.50\right).\left(25.12\right).37\)

\(=200.300.37=2220000\)

\(b.\left(46+54\right)+\left(17+83\right)\)

\(=100+100=200\)

\(c.87.\left(36+69\right)=87.105=9135\)

\(d.\left(135+65\right)+\left(360+40\right)\)

\(=200+400=600\)

\(e.\left(463+137\right)+\left(318+22\right)\)

\(=600+340=940\)

a,4x37x25x50x12=(50.4).(25.12).37=200.300.37=2220000

b,46+17+54+83=(46+54)+(17+83)=100+100=200

c,87.36+87.69=87.(36+69)=87.105=9135

d,135+65+360+40=(135+65)+(360+40)=200+400=600

e,463+318+137+22=(463+137)+(318+22)=600+340=940

a, (135-35).(-37)+37.(-42-58)

= 100.(-37)+37.(-100)

= 100.(-37)+(-37).100

= (-37).(100+100)

= (-37).200

= -7400

b, -65.(87-17)-87.(17-65)

= -65.70-87.(-48)

= -4550+4176

=-374

c, [3.(-2)-(-8)].(-7)-(-2).(-5)

= [(-6)+8].(-7)+(-10)

= 2.(-17)

= -34

a) (135 - 35) . (-37) + 37 . (-42 - 58)

= 100 . 0 . (-100)

= 0

b) -65 . (87 - 17) - 87 . (17 - 65)

= -65 . 70 - 87 . (-48)

= -4550 - 135

= -4415

Các bạn nhớ ghi cách làm ra nhé!

135 x 37 + 135 +  62 x 135

= 135 x 37 + 135 x 1 +  62 x 135

= 135 x ( 37 + 1 + 62)

 = 135 x 100

= 13500