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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
48.19+48.115+134.52=48.(19+115)+134.52
=48.134+134.52
=134.(48+52)
=134.100
=13400
Học tốt nha!!!
\(48\cdot19+48\cdot115+134\cdot52\)
\(=48\cdot\left(19+115\right)+134\cdot52\)
\(=48\cdot134+134\cdot52\)
\(=134\cdot\left(48+52\right)\)
\(=134\cdot100\)
\(=13400\)
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
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
\(48\cdot19+48\cdot115+134\cdot52\)
\(=48\cdot\left(19+115\right)+134\cdot52\)
\(=48\cdot134+134\cdot52=134\left(48+52\right)=134\cdot100=13400\)
Đáp án:
B=15+17+19+...+155B=15+17+19+...+155
Phép tính B có số số hạng là:
(155−15):2+1=71(155-15):2+1=71 (số hạng)
Tổng phép tính B là:
(155+15).71:2=6035(155+15).71:2=6035
C=4.325.6+4.69.24+3.399.8C=4.325.6+4.69.24+3.399.8
C=(4.6).325+276.24+(3.8).399C=(4.6).325+276.24+(3.8).399
C=24.325+276.24+24.399C=24.325+276.24+24.399
C=24.(325+276+399)C=24.(325+276+399)
C=24.1000C=24.1000
C=24000C=24000
`D = 43 . 37 + 43 . 73 + 57 . 66 + 57 . 44`
D=43.(37+ 73)+57.(66+44)D=43.(37+ 73)+57.(66+44)
D=43.110+57.110D=43.110+57.110
D=(43+57).110D=(43+57).110
D=100.110D=100.110
D=11000D=11000
E=48.19+48.115+134.52E=48.19+48.115+134.52
E=48.(19+115)+134.52E=48.(19+115)+134.52
E=48.134+134.52E=48.134+134.52
E=134.(48+52)E=134.(48+52)
E=134.100E=134.100
E=13400
6035
24000
11000
13400
TL
A=15+17+19+...+155B=15+17+19+...+155
Phép tính B có số số hạng là:
(155−15):2+1=71(155-15):2+1=71 (số hạng)
Tổng phép tính B là:
(155+15).71:2=6035(155+15).71:2=6035
B=4.325.6+4.69.24+3.399.8C=4.325.6+4.69.24+3.399.8
B=(4.6).325+276.24+(3.8).399C=(4.6).325+276.24+(3.8).399
B=24.325+276.24+24.399C=24.325+276.24+24.399BB=
B=24.(325+276+399)C=24.(325+276+399)
B=24.1000C=24.1000
B=24000C=24
D=43.1+E
C=48.(19+115)+134.52E=48.(19+115)+134.52
C=48.134+134.52E=48.134+134.52
C=134.(48+52)E=134.(48+52)
C=134.100E=134.100
C=13400
Hok tốt