49.19+48.115+134.52
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48.19+48.115+134.52=48.(19+115)+134.52
=48.134+134.52
=134.(48+52)
=134.100
=13400
Học tốt nha!!!
\(48\cdot19+48\cdot115+134\cdot52\)
\(=48\cdot\left(19+115\right)+134\cdot52\)
\(=48\cdot134+134\cdot52\)
\(=134\cdot\left(48+52\right)\)
\(=134\cdot100\)
\(=13400\)
48 . 19 + 48 . 115 + 134 . 52
= 48( 19 + 115) + 134.52
= 48 . 134 + 134 . 52
= 134( 48 + 52)
= 134.100 = 13400
nhớ bấm đúng cho mình nhé!
Ta có : 48 . 19 + 48 . 115 + 134 . 52 = 48 . (19+115) + 134 . 52
= 48 . 134 + 134 .52
= (48 + 52 ) .134
= 100 . 134 = 13400
48.19+48.115+134.52
=48.(19+115)+134.52
=48.134+134.52
=134.(48+52)
=134.100
=13400
a, 48.19 + 48.115 + 134.52
= 48 . ( 19 + 115 ) + 134.52
= 48 . 134 + 134 . 52
= 134 . ( 48 + 52 )
= 134 . 100
= 13400
b, 27 . 121 - 87 . 27 + 73 . 34
= 27 . ( 121 - 87 ) + 73 . 34
= 27 . 34 + 73 . 34
= 34 . ( 27 + 73 )
= 34 . 100
= 3400
a, 48 . 19 + 48 . 115 + 134 . 52
= 48 . ( 19 + 115 ) + 134 . 52
= 48 . 134 + 134 . 52
= ( 48 + 52 ) . 134
= 100 . 134
= 13400
b, 27 . 121 - 87 . 27 + 73 . 34
= 27 . ( 121 - 87 ) + 73 . 34
= 27 . 34 + 73 . 34
= ( 27 + 73 ) . 34
= 100 . 34
= 3400
a) 48 . 19 + 48 . 115 + 134 . 52 b) 27 . 121 - 87 . 27 + 73 . 34 c) 29 . 38 - 29 . 23 + 64 . 71
= 48 . ( 19 + 15 ) + 134 . 52 = 27 . ( 121 - 87 ) + 73 . 34 = 29 . ( 38 - 23 ) + 64 . 71
= 48 . 134 + 134 . 52 = 27 . 34 + 73 . 34 = 29 . 15 + 64 . 71
= 134 . ( 48 +52 ) = 34 . ( 27 + 73 ) = 4979
= 134 . 100 = 34 . 100
= 13400 = 3400
Phần c) mình thấy hơi sai sai đề , bạn xem lại đề nhé
S=43.37+43.73+57.66+57.44
=43.(37+73)+57.(66+44)
=43.100+57.100
=100.(43+57) =100.100=10000
S=48.19+48.115+134.52
=48.(19+115)+134.52=48.134+134.52=134.(52+48)=134.100=134000
a)27.39+27.63-2.27
=27.(39+63-2)
=27.100
=2700
b) 66.25+5.66+66.14+33.66
=66.(25+5+14+33)
=66.77
=5082
c) 136.23+136.17-40.36
=136.(23+17)-40.36
=136.40-40.36
=40.(136-36)
=40.100
=4000
d) 48.19+48.115+134.52
=48.(19+115)+134.52
=48.134+134.52
=134.(48+42)
=134.100
=13400
a,48.(19+115)+134.52=48.134+134.52=134.(48+52)=134.100=13400
b,27.(121-87)+73.364=27.34+73.34=34.(73+27)=34.100=3400
c,125.(98-46)-52.25=125.52-52.25=25.(125-25)=25.100=2500
tick nha
49.19+48.115+134.52
=48.19+19+48.115+134.52
=48.(19+115)+19+134.52
=48.134+134.52+19
=134.(48+52)+19
=134.100+19
=13400+19
=13419
tick mik nha
sai nha
13400