Tính nhanh:66.25+5.66+66.14+33.16
Bài 1 tính nhanh
66.25 + 5.66 + 66.14 + 33.66
35.23 + 35.41 + 64.65
66.25 + 5.66 + 66.14 + 33.66
= 66. (25+5+14+33 )
= 66. 77
= 5082
35.23 + 35.41 + 64.65
= 35. ( 23 + 41 ) + 64.65
= 35. 64 + 64.65
= ( 35 + 65 ).64
= 100 . 64
= 6400
66.25+5.66+66.14+34.66
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
d)66.25+5.66+66.14+33.66
66.25+5.66+66.14+33.66
=66.(25+5+14+33)
=66.77
=5082
nhớ k giùm mk please!
Tính nhanh
d) 66.25 + 5.66 + 66.14 + 33.66
i) 136.23 + 136.17 – 40.36 e) 12.35 + 35.182 – 35.94
j) 17.93 + 116.83 + 17.23
m) 19.27 + 47.81 + 19.20
Bài tập:Tính nhanh:
a 27.39+27.63-2.27
b 66.25+5.66+66.14+33.66
c 136.23+136.17-40.36
d 48.19+48.115+134.52
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
Đề bài : Tính nhanh
a) 35.34+35.86+65.75+65.75
b) 3.25.8+4.37.6+2.38.12
c) 66.25+5.66+66.14+33.66
d) 48.19+48.115+134.52
MN GIÚP MK VS MIK ĐANG CẦN GẤP
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
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
tính hợp lí : a)66.25+66+66.14+33.16
b)48.19+48.115+134.52
c)17.93+116.83+17.23
a) \(66.25+66+66.14+33.16=66.25+66.1+66.14+66.8=66.\left(25+1+14+8\right)=66.48=3168\\\)
a 66.25 + 5.66 + 66.14 + 33.66
b 35.23 + 35.41 + 64.65
c 29.87 - 29.23 + 64.71
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
cho mik sửa lại câu c
29 x 87 - 29 x 23 + 64 x 71
= (87 - 23) x 29 + 64 x 71
= 64 x 29 + 64 x 71
= 64 x (29 + 71)
= 64 x 100
= 6400
Thực hiện phép tính( tính nhanh nếu có thể)
a) 3.52+15.22-26:2
b) 125.98-125.46-52.25
c) 66.25+5.66+66.14+33.66
d) 58.75+58.50-58.25