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66.25+5.66+66.14+33.66
=66.(25+5+14+33)
=66.77
=5082
nhớ k giùm mk please!
a) 66 . 25 + 5 . 66 + 66 . 14 + 33. 66
= 66 . ( 25 + 5 + 14 + 33 )
= 66 . 77
= 5082
b) 35 . 23 + 35 . 41 + 64 . 65
= 35 . ( 23 + 41 ) + 64 . 65
= 35 . 64 + 64 . 65
= 64 . ( 35 + 65 )
= 64 . 100
= 6400
c) 29 . 87 - 29 . 23 + 64 . 71
= 29 . ( 87 - 23 ) + 64 . 71
= 29 . 64 + 64 . 71
= 64 . ( 29 + 71 )
= 64 . 100
= 6400
66 x 25 + 5 x 66 + 66 x 14 + 33 x 66
= (25 + 5 + 14 + 33) x 66
= 77 x 66
= 5082
35 x 23 + 35 x 41 + 64 x 65
= [(23 + 41) x 35] + 64 x 65
= (64 x 35) + 4160
= 2240 + 4160
= 6400
29 x 87 - 29 x 23 + 64 x 71
= [(87 - 23) x 19] + 64 x 71
= (64 x 19) + 64 x 71
= 64 x 19 + 64 x 71
= (19 + 71) x 64
= 90 x 64
= 5760
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, 35.34 + 35.86 + 65.75 + 65.75
= 35.(34 + 86) + 75.(65 + 65)
= 35.120 + 75.130
= 4200 + 9750
= 13950
b, 3.25.8 + 4.37.6 + 2.38.12
= 24.25 + 24.37 + 24.38
= 24.(25 + 37 + 38)
= 24. 100
= 2400
c,66.25 + 5.66 + 66.14 + 33.66
= 66 . (25 + 5 + 14 + 33)
= 66 .77
=5082
d, 48 .19 + 48.115 + 134.52
= 48 . (19 + 115) + 134.52
= 48 . 134 + 134.52
= 134 . (48 + 52)
= 134 . 100
= 13400
35.34+35.85+75+65.75
=13950
3.25.8+4.37.6=2.38.12
=2400
66.25+5.66+66.14+33.66
=5082
48.19=48.115+134.52
=13400
hok tốt
66 x 25 + 5 x 66 + 66 x 14 + 34 x 66
= (25 + 5 + 14 + 34) x 66
= (30 + 48) x 66
= 78 x 66
= 5148
Học tốt!!!
66.25+5.66+66.14+34.66
=66.(25+5+14+34)
=66.78
=5148
k mik nhé
hok tốt
66.25+5.66+66.14+33.16
=66.25+5.66+66.14+33.2.8
=66.25+5.66+66.14+66.8
=66.(25+5+14+8)
=66.52=3432
= 66.25+5.66+66.14+33.2.8
= 66.25+5.66+66.14+66.8
= 66.(25+5+14+8)
= 66.52
= 3432
a: \(13\cdot\left(-7\right)=-91\)
b: \(\left(-8\right)\cdot\left(-25\right)=200\)
c: =>x+4=98-20=78
hay x=74
g: \(=35\left(12+182-94\right)=35\cdot100=3500\)
h: \(=-8537+1975+8537=1975\)
a 8.125-8.3000=1000-24000=-23000
b 512.2-512.128-128.(-512)=512.2-[512.128+128.(-512)]=1024-0=1024
c 66.25+5.66+66.14+33.66=66.(25+5+14+33)=66.77=5082
tick mình nhiều nha ! Thank you
66.25+5.66+66.14+33.66
=66.(25+5+14+33)
=66.77
=5082
tính nhanh mọi người