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) 58.75+58.50-58.25
B) 27.39+27.63-2.27
C) 128.46+128.32+128.22
D) 12.35+35.182-35.94
E) 48.19+48.115+134.52
F) 136.23+136.17-40.36
G) 17.93+116.83+17.23
H) 19.27+47.81+19.20
I) 87.23+13.93+70.87
Tính nhanh:
A) 58.75+58.50-58.25
B) 27.39+27.63-2.27
C) 128.46+128.32+128.22
D) 12.35+35.182-35.94
E) 48.19+48.115+134.52
F) 136.23+136.17-40.36
G) 17.93+116.83+17.23
H) 19.27+47.81+19.20
I) 87.23+13.93+70.87
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
2. Tính nhanh
a,58.75 + 58.50 - 58.25 e,48.19 + 48.115+134.5
b,27.39 + 27.63 - 2.27 f,125.98 - 125.46 - 52.25
c,128.46 + 128.32 + 128.22 g,136.23 + 136.17 - 40.36
d,66.25 + 5.66 + 66.14+ 33.66 h,1+2+3+4+5+...+n
i,2+5+11+...+47+65
bài 1: tính nhanh
a) 48.19+48.115+134.52
b) 27.121-87.27+73.34
c)125.98-125.46-52.25
d) 136.23+136.17-40.36
e) 17.93+116.83+17.23
ê)19.27+47.81+19.20
f) 87.23+13.93+70.87
bài 1 : tính nhanh
48.19+48.115+134.52
27.121-87.27+73.34
125.98-125.46-52.25
136.23+136.17-40.36
17.93+116.83+17.23
baif tìm x
|x-3|=|5|+|7|
4-(7-x)=x-(13-4)
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 48.19 +48.115 +134.52
B, 27.121 - 87.27 + 73.34
C, 125.98 - 125.46. -52.23
D, 136.23 + 136.17 +40.36
E, 17.93 + 116.83 + 17.23
F, 19.27 + 47.81 + 19.20
G, 87.23 + 13.93 + 70.87
Các bạn giúp mình nhé ! Cảm ơn
Tính nhanh
12.35+35.182-35.94 ; 35.23+35.41+54.65 ; 29.87-29.23+64.71
48.19+48.115+134.52 ; 27.121-87.27+73.34 ; 125.98-125.46-52.25
136.23+136.17-40.36 ; 17.93+116.83+17.23 ; 19.27+47.81+19.20
66.25=5.66+66.14+33.66 ; 87.23+13.93+70.87
các bạn ơi giúp mình với mình cần gấp!
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