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a) 38 + 41 + 117 + 159 + 62
= ( 38 + 62 ) + ( 41 + 159 ) + 117
= 100 + 200 + 117
= 300 + 117
= 417
b) 42 x 53 + 47 x 156 - 47 x 144
= 47 x ( 156 - 144 ) + 42 x 53
= 47 x 12 + 42 x 53
= 564 + 2226
= 2790
c) 341 x 67 + 341 x 16 + 659 x 83
= 341 x ( 67 + 16 ) + 659 x 83
= 341 x 83 + 659 x 83
= 83 x ( 341 + 659 )
= 83 x 1000
= 83000
hok tốt
1.a)341.67+341.16+659.82
=341.(67+16)+659.82
=341.83+659.82
=341+341.82+659.82
=341+82.(341+659)
=341+82.1000
=82341
b)42.53+47.156-47.114
=42.53+47.(156-114)
=42.53+47.42
=42.(53+47)
=42.100
=4200
B) 42.53+47.156-47.114
=42.53+47(156-114)
=42.53+47.42
=42(53+47)
=42.100
=4200
341.67+341.6+659.83
=341.(67+6)+659.83
=341.83+659.83
=(341+659).83
=1000.83
=83000.
42.53+47.156-47.114
=42.53+47.(156-114)
=42.53+47.42
=42.(53+47)
=42.100.
NẾU ĐÚNG THÌ K OK OK OK OK
=4200
341.67+341.16+659.83=341.(67+16)+659.83
=341.83+659.83
=83.(341+659)
=83.1000
=83000
42.53+47.156-47.114=42.53+47.(156-114)
=42.53+47.42
=42.(53+47)
=42.100
=4200
341.67 + 341.16 + 659.83 = 83000
42.53 + 47.156 - 47.114 = 4200
mk là người đầu tiên
a, ( 38 + 62 ) + ( 41 + 159 ) + 117
= 100 + 200 + 117
= 417
b, ( 968 + 3032 ) + ( 86 + 914 ) + 73
= 4000 + 1000 + 73
= 5073
c, 341 x ( 67+ 16 ) + 659 x 83
= 341 x 83 + 659 X 83
= 83 x ( 341 + 659 )
= 83 x 1000
= 83000
d, 42 x 53 + 47 x ( 156 - 114 )
= 42 x 53 + 47 x 42
= 42 x ( 53 + 47 )
= 42 x 100
4200
- a,=[38+62]+[41+159]+117 =100+200=300+117 =417 b,=[86+914]+[968+3032]+73 =1000+4000 =5000+73
=5073
a) 38 + 41 + 117 + 159 + 62 = ( 38 + 62 ) + ( 159 + 41 ) + 117 = 100 + 200 + 117 = 300 + 117 = 417
b) 73 + 86 + 968 + 914 + 3032 = ( 914 + 86 ) + ( 3032 + 968 ) + 73 = 1000 + 4000 + 73 = 5000 + 73 = 5073
c) 341 x 67 + 341 x 16 + 659 x 83 = 341 x ( 67 + 16 ) + 659 x 83 = 28303 + 54679 = 82982
d) 42 x 53 + 47 x 156 + 47 x 114 = 47 x ( 156 + 114 ) + 42 = 12690 + 42 = 12732
a) 14.99 b)42.53+47.156-47.114 c) 5.77.7-7.60+49
(14-1). (99+1) 42.53+47.(156-114)
13.100 42.53+ 47.42
1300 42.(53+42)
42.100
4200
a) 36.(250+87)+64.(240+97)
= 36.( 240+10+87) + 64.(240+97)
= (240+97) . (36+64)
= 337.100
= 33700
b) 42.63+47.156-47.114
= 42.63 + 47.(156-114)
= 42.63 + 47.42
= 42.(63+47)
= 42.100
= 4200
k nha!
a) L=341.67+341.15+659.82
L=341.(67+15).659.82
L=341.82+659.82
L=82.(341+659)
L=82.1000
L=8200
chúc bạn học tốt nha
a) L = 341.67+341.15+659.82
L = 341 . (67 + 15) + 659 . 82
L = 341 . 82 + 659 . 82
L = 82 . (341 + 659)
L = 82 . 1000
L = 82000
b) M = 42.53+47.156-47.114
M = 42 . 53 + 47 . (156 - 114)
M = 42 . 53 + 47 . 42
M = 42 . (53 + 47)
M = 42 . 100
M = 4200