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a) (18+12.3):9-5
=(18+36):9-5
=54:9-5
=6-5
=1
b) 368+42:7-(23+3)
= 368+42:7-(8+3)
= 368+42:7-11
= 368+6-11
=374-11
=363
c) 324 :322+3.4+3560
=324-22+12+1
=32+12+1
=9+12+1
=21+2
=22
d) 210:25-75:25+3.3
=210-5-3+9
=25-3+9
=32-3+9
=29+9
=38
e) 1449-[(216+184):23].32
=1449-(400:8).9
=1449-50.9
=1449-450
=999
f) 600-400:[118.2-2(50.3-9.16)2]
=600-400:[118.2-2(150-144)2]
=600-400:(118.2-2.62)
=600-400:(118.2-2.36)
=600-400:(236-72)
=600-400:164
=600-100/41
=24500/41 (đề sai)
g) 2001.27+2001.63+2001.10
=2001.(27+63+10)
=2001.100
=200100
h) 64.54+47.64-64
=64.(54+47-1)
=64.100
=6400
i) (-17)+15+68+17+(-15)
=(-17+17)+(-15+15)+68
=0+0+68
=68
j) (-17)+|-5|+|10|+(-11)
= (-17)+5+10+(-11)
=-12+10+(-11)
=-2+(-11)
=-13
k) -75+(-9)+4
=-84+4
=-80
l) -100+(-15+10)+|(-48)+(-22)|
=-100+(-5)+|-70|
=-100+(-5)+70
=-105+70
=-35
a) (18+12.3):9-5
=(18+36):9-5
=54:9-5
=6-5
=1
b) 368+42:7-(23+3)
= 368+42:7-(26)
=368+6-64
=374-64
=310
c) 324 :322+3.4+3560
=32+12+1
=9+12+1
=21+1
=22
d) 210:25-75:25+3.3
=25-3+9
=32-3+9
=29+9
=38
e) 1449-[(216+184):23].32
= 1449-[400:8].9
=1449-50.9
=1449-450
=999
f) 600-400:[118.2-2(50.3-9.16)2]
=600-400:[118.2-2.(150-9.16)2]
=600-400:[118.2-2.(150-144)2]
=600-400:[118.2-2.62]
=600-400:[118.2-2.36]
=600-400:[236-72]
=600-400:164
=Đề sai nha bạn
g) 2001.27+2001.63+20010
=2001.(27+63)+20010
=2001.100+20010
=200100+20010
=220110
h) 64.54+47.64-64
=64.(54+47-1)
=64.(101-1)
=64.100
=6400
i) (-17)+115+68+17+(-15)
=98+68+17+(-15)
=166+17+(-15)
=183+(-15)
=168
j) (-17)+|-5-|+|10|+(-11)
=(-17)+5+10+(-11)
=(-12)+5+10+(-11)
=-7+10+(-11)
=3+(-11)
=-8
k) -75+|(-9)+4|
=-75+|-5|
=-75+5
=-70
l) -100+(-15+10)+|(-48)+(-22)|
= -100+(-15+10)+|-70|
= -100+(-15+10)+70
=-100+(-5)+70
=-105+70
=-35
A = 136 . 25 + 75 . 136 - 62 . 102 B = 90 - (22 . 25 - 32 . 7) C = 720 - {96 . [ (24 . 2 - 5) : 32 . 130] }
= 136 . (25 + 75) - 36 . 100 = 90 - (4 . 25 - 9 . 7)
= 136 . 100 - 36 . 100 = 90 - (100 - 63)
= (136 - 36) . 100 = 90 - 37
= 100 . 100 = 53
= 10000
D = 570 + {96 . [ (24 . 2 - 5) : 32 . 130] } E = 37 . 24 + 37 . 76 + 63 . 79 + 21 . 63
= 570 + {96 . [ (16 . 2 - 5) : 9 . 1] } = 37 . (24 + 76) + 63 . (79 + 21)
= 570 + [96 . (27 : 9) ] = 37 . 100 + 63 . 100
= 570 + (96 . 3) = (37 + 63) . 100
= 570 + 288 = 100 . 100
= 858 = 10000
a/[25-(-75)]+32-(32+55)
=[25+75]+32-(32+55)
=25+75+32-32-55
=[25+75]+[32-32]-55
=100+0-55
=100-55
=45
1) \(A=\left\{136-32.\left[\left(25:25+17.2016^0\right):3-3\right]\right\}:102.52\)
\(\Rightarrow A=\left\{136-32.\left[\left(1+17\right):3-3\right]\right\}:102.52\)
\(\Rightarrow A=\left[136-32.\left(18:3-3\right)\right]:102.52\)
\(\Rightarrow A=\left[136-32.\left(6-3\right)\right]:102.52\)
\(\Rightarrow A=\left(136-32.3\right):102.52\)
\(\Rightarrow A=\left(136-96\right):102.52\)
\(\Rightarrow A=40:102.52\)
\(\Rightarrow A=\dfrac{20}{51}.52\)
\(\Rightarrow A=\dfrac{1040}{51}\)