136.23+17-40.36
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\(136\cdot23+136\cdot27-40\cdot36\)
\(=136\cdot\left(23+17\right)-40\cdot36\)
\(=136\cdot40-40\cdot36\)
\(=40\cdot\left(136-36\right)\)
\(=40\cdot100=4000\)
\(17\cdot93+116\cdot83+17\cdot23\)
\(=17\cdot\left(93+23\right)+116\cdot83\)
\(=17\cdot116+116\cdot83\)
\(=116\cdot\left(17+83\right)\)
\(=116\cdot100=11600\)
\(136.23+136.17-40.36\)
\(=136.\left(23+17\right)-40.36\)
\(=136.40-40.36\)
\(=40.\left(136-36\right)\)
\(=40.100\)
\(=100\)
a)48*(19+115)+134*52
48 *134 +134*52
134*(48+52)
134*100
13400
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
= 58.(75 + 50 - 25)
= 58. (125 - 25)
= 58.100
= 5800
b, 27.39 + 27.63 - 2.27
= 27.(39 + 63 - 2)
= 27.(102 - 2)
= 27.100
= 2700
a) 58.75 + 58.50 - 58.25
= 58. (75 + 50 - 25)
= 58. 100
= 5800
b) 27.39 + 27.63 + 2.27
= 27. (39 + 63 - 2)
= 27. 100
= 2700
c) 128.46 + 128.32 + 128.22
= 128.(46 + 32 + 22)
= 128. 100
= 12800
d) 12.35 + 35.182 - 35.94
= 35.(12 + 182 - 94)
= 35. 100
= 3500
e) 48.19 + 48.115 + 134.52
= 48.(19 + 115) + 134.52
= 48.134 + 134.52
= 134.(48 + 52)
= 134.100
= 13400
f) 136.23 + 136.17 - 40.36
= 136.(23 + 17) - 40.36
= 136.40 - 40.36
= 40.(136 - 36)
= 40.100
= 4000
g) 17.93 + 116.83 + 17.23
= 17.(93 + 23) + 116.83
= 17.116 + 116.83
= 116.(17 + 83)
= 116.100
= 11600
h) 19.27 + 47.81 + 19.20
= 19.(27 + 20) + 47.81
= 19.47 + 47.81
= 47.(19 + 81)
= 47.100
= 4700
i) 87.23 + 13.93 + 70.87
= 87.(23 + 70) + 13.93
= 87.93 + 13.93
= 93.(87 + 13)
= 93.100
= 9300
#NgHn
dễ :>>>
=13.640-40.36
=17.676
Duyệt hộ mik nha!