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a) 2.31.12+4.6.42+8.27.3= 24.31+24.42+24.27= 24.(31+42+27)=24.100=2400
b) 36.28+36.82+64.69+64.41=36.(28+82)+64.(69+41)=36.110+64.110= (36+64).110=100.110=11000
a) 2.31.12+4.6.42+8.27.3
=(2.12).31+(4.6).42+(8.3).27
=24.31+24.42+24.27
=24.(31+42+27)
=24.100
=2400
b)36.28 + 36.82 +64.69 + 64.41
= 36.(28+82) + 64.(69+41)
= 36.110+64.110
=110.(36+64)
=110.100
=11000

= 36 x ( 28 + 82 ) + 64 x ( 69 x 41 )
= 36 x 110 + 64 x 110
= 110 x ( 36 + 64 )
= 110 x 100
= 11000
TK mk nha !! ~

a) 81 + 243 + 19
= (81 + 19) + 243
= 100 + 243
= 343
b) 12.53 + 53.172 – 53.84
= 53.(12 + 172 – 84)
= 53.100
= 5300
c) 36.28 + 36.82 + 64.69 + 64.41
= 36.(28 + 82) + 64.(69 + 41)
= 36.110 + 64.110
= (36 + 64).110
= 100.110
= 11000
d) 2.31 + 4.6.12 + 8.27.3
= 62 + 288 + 648
= 998
= 998
e) 5.25.2.16.4
= (5.25).(2.16.4)
= 125.128
= 16000
f) 1.2.3.4.5.6
= (1.2.3).(4.5.6)
= 6.120
= 720

36.28 + 36.82 + 64.69 + 64.41 = 36.(28 + 82) + 64.(69 + 41) = 36.110 + 64.110 = (36 + 64).110 = 100.110 = 11000
\(36x28+36x82+64x69+64x41\)
\(=36x\left(28+82\right)+64x\left(69+41\right)\)
\(=36x110+64x110\)
\(=\left(36+64\right)x110\)
\(=100x110\)
\(=11000\)

a)=24.31+24.42+24.27=24.(31+42+27)=24.100=2400
b)=36.(28+82)+64.(69+41)=36.110+64.110=110.(36+64)=110.100=11000

a ) = 24 . 31 + 24.42 + 24.27
= 24 . ( 31+42+27)
=24.100
= 2400
b) = 36.( 28+82) + 64.( 69+41)
= 36.101 + 64.101
=101.( 36+64)
=101.100
=10100

a, 24.31 + 24.42 + 24.27 = 24 ( 31+42+27) =24.100 = 2400
b,36.(28+82)+64(69+41) = 36.110 + 64.110 = 110 (36+64) = 110.100= 11000

a) 34.15 + 34.85 = 34.(15+85) = 34.100 = 3400
b) 12.57 + 57.25 + 63.57 = 57.(12+25+63) = 57.100 = 5700
c) 36.28 + 36.82 + 64.69 + 64.41 = 36.(28+82) + 64(69+41) = 36.110 + 64.110 = 110.(36+64) = 11000
d) 2.31.12 + 4.6.42 + 8.27.3 = 24.31 + 24.42 + 24.27 = 24.(31+42+27) = 24.100 = 2400
36.28 + 36.82 + 64.69 + 64.41
= (36.28 + 36. 82) + ( 64.69 + 64.41)
= 36.(28 + 82) + 64.(69 + 41)
= 36.110 + 64.110 = 110.( 36 + 64 ) = 110.100 = 11000