35x34+35x34+65x75+65x45 

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

= 35 x 34 x 2 + 65 x (75 + 45)

= 2380 + 65 x 120

= 2380 + 7800

= 10180

35x34+35x34+65x75+65x45 

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

= 35 x 34 x 2 + 65 x (75 + 45)

= 2380 + 65 x 120

= 2380 + 7800

= 10180

=10180

ok

học tốt

.

35x34+35x38+65x45+65x27

=35x(34+38)+65x(45+27)

=35x72+65x72

=72x(35+65)

=72x100

=7200

35 x 34 + 35 x 38 + 65 x 45 + 65 x 27

= 35 x ( 34 + 38 ) + 65 x ( 45 + 27 )

= 35 x 72 + 65 x 72

= ( 35 + 65 ) x 72

= 100 x 72

= 7200

35x34+35x38+65x45+56x27

=35x(34+38)+65x(45+27)

=35x72+65x72

=72x(35+65)

=72x100

=7200

Chúc bạn học giỏi nha!!!

K cho mik với nhé Thu Thuỷ Nguyễn

35 x 34 + 35 x 38 + 65 x 45 + 65 x 27

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

= 35 x 72 + 65 x 110

= 2510 + 7150

= 9660

a, 35.(34+86) +65.(75+45)= 35. 120 +65.120= 120.(35+65)=120.100=12000

a, 35x34+35x86+65x75+65x45

=35x(34+86)+65x(75+45)

=35x120+65x120

=120x(35+65)

=120x100

=12000

b,3x25x8+4x6x37+2x8x12

=24x25+24x37+24x8

=24x(25+37+8)

=24x70

=1680

35 x 34 + 35 x 86 + 65 x 75 + 65 x 45

= 35 x ( 34 + 86 ) + 65 x ( 65 + 45 )

= 35    x    120   +    65    x     120

 =      120 x ( 35 + 65 )

=           120 x 100 = 12000

d) 35x34 +35x38 + 65x75 + 65x45

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

= 35 x 72 + 65 x 120

= 2520 + 7800

= 10 320

d) 35x34 +35x38 + 65x75 + 65x45

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

= 35 * 72 + 65 * 120

= 2520 + 7800

= 10320

tính hợp lí giúp mk nha

a,35x34+35x86+65x75+65x45

=35x(34+86)+65x(75+45)

=35x120+65x120

=120x(35+65)

=120x100

=12000

b,3x25x8+4x37x6+2x38x12

=(3x8)x25+(4x6)x37+(2x12)x38

=24x25+24x37+24x38

=24x(25+37+38)

=24x(62+38)

=24x100

=2400

c,12x53+53x172-53x84

=53x(12+172-84)

=53x(184-84)

=53x100

=5300

a.35x(34+86)+65x(75+45)=35x120+65x120=120x(35+65)=120x100=12000

b.3x25x8+4x37x6x2x38x12=24x25+24x37+24x38=24x(25+37+38)=24x100=2400

c.53x(12+172-84)=53x100=5300

a)  35x34+35x86+65x75+65x45

=35.(34+86)+65.(75+45)

=35.120+65.120

=120.(35+65)

=120.100

=12 000

b)   3x25x8+4x37x6+2x38x12

=75.8+148.6+76.12

= 600+888   +912

=2400

c)12x53+53x172-53x84

=53.(12+172-84)

=53.100

=5300

Học Tốt ! #Moon#

1) a) \(35.34+35.58+65.75+65.45\)

\(=35\left(34+58\right)+65\left(75+45\right)\)

\(=35.92+65.120\)

\(=3220+7800=11020\)

b) \(39,8+60,2+21,8-100\)

\(=\left(39,8+60,2\right)-100+21,8\)

\(=100-100+21,8=0+21,8=21,8\)

c) \(36.28+64.49+36.82+41.64\)

\(=36\left(28+82\right)+64\left(49+41\right)\)

\(=36.110+64.90\)

\(=3960+5760\)\(=9720\)

a) 34 x 35 + 86 x 35 + 65 x 75 + 65 x 45

=   ( 34 + 86 ) x 35 + 65 x ( 75 + 45 )

=      120 x 35 + 65 x 120

=      120 x ( 65 + 35 )

=      120 x 100

=           12000

b) ............

a, 34x35+86x35+65x75+65x45

=35x(34+86)+65x(75+45)

=35x120+65x120

=120x(35+65)

=120x100

=12000

a=(34+86)x35+(45+75)x65

=120x35+120x65

=(35+65)x120

=100x120

=12 000

b=749 850