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303-3.{[655-(18:2+1).43+5]}:100
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a) 80-(4.52-3.23)=80-100+24=4
b)[36.4-4.(82-7.11)2]:4-20190
={4.[36-(82-7.11)2]}:4-1
=[36-(82-7.11)2]-1
=11-1=10
c)56:54+23.22-12018
=52+25-1
=25+32-1=56
d)303-3.{[655-(18:2+1).43+55]}:100
=303-3.[(655-9-1).43+55]:1
=303-3[655-640+5]
=303-3(20)
=303-60=243
a, 80 - 4 . 5 2 - 3 . 2 3
= 80 – (4.25 – 3.8)
= 80 – 76 = 4
b, 5 6 : 5 4 + 2 3 . 2 2 - 1 2018
= 5 2 + 2 5 - 1
= 25 + 32 – 1 = 56
c, [36.4 – 4. 82 - 7 . 11 2 ]:4 – 2019 0
= (144 – 4. 5 2 ):4 – 1
= (144 – 100):4 – 1
= 11 – 1 = 10
d, 303 – 3.{[655 – (18:2+1). 4 3 +5]}: 10 0
= 303 – 3.(655 – 10.64 + 5):1
= 303 – 10 = 293
303 - 3.{[655 - (18 : 2 + 1) . 4³ + 5]} : 10⁰
= 303 - 3.(655 - 10.4³ + 5)
= 303 - 3.(655 - 640 + 5)
= 303 - 3.20
= 303 - 60
= 243
\(303-3.\left\{\left[655-\left(18:2+1\right).4^3+5\right]\right\}:10^0\)
\(=303-3.\left\{\left[655-\left(9+1\right).4^3+5\right]\right\}:10^0\)
\(=303-3.\left\{\left[655-10.64+5\right]\right\}:1\)
\(=303-3.\left\{\left[655-640+5\right]\right\}\)
\(=303-3.\left\{\left[15+5\right]\right\}\)
\(=303-3.20\)
\(=303-60=243\)
303 - 3 . {[655 - (18:2+1).43 + 5]} : 100
= 303 - 3 . {[655 - (9+1).64 + 5]} : 1
= 303 - 3 . {[655 - 10.64 + 5]} : 1
= 303 - 3 . {[655 - 640 + 5]} : 1
= 303 - 3 . {15 + 5} : 1
= 303 - 3 . 20 : 1
= 303 - 60 : 1
= 303 - 60
= 243
câu a sai đề hay sao rồi bn ơi
303-3{[655-(18:2+1).4^3+5]}:10^0
=303-3{[655-(9+1).64+5]}:1
=303-3(655-10.64+5):1
=303-3(655-640+5):1
=303-3.20:1
=303-60
=243
\(27.332+93.43+57.61+69.57\\ =27.332+93.43+57.\left(61+69\right)\\ =27.332+93.43+57.130\\ =8964+3999+7410=20373\\ 34.75+75.66-65.100\\ =\left(34+66\right).75-65.100\\ =100.75-65.100\\ =100.\left(75-65\right)\\ =100.10=1000\\ \left(456.11+912\right).37:13:74\\ =5928:13:\left(74:37\right)\\ =456:2=228\\ 6^2:4.3+2.5^2\\ =36:4.3+2.25\\ =9.3+50=27+50=77\\ 5.4^2-18:3^2\\ =5.16-18:9\\ =80-2=78\\\left[\left(315+372\right).3+\left(372+315\right).7\right]:\left(26.13+74.14\right)\\ =687.\left(3+7\right):\left(338+1036\right)\\ 687.10:1374\\ =6870:1374=5\\ 12:\left\{390:\left[500-\left(125+35.7\right)\right]\right\}\\ =12:\left[390:\left(500-370\right)\right]\\ =12:\left(390:130\right)=12:3=4\\ 192000-\left(1500.2+1800.3+1800.2:3\right)\\ =192000-\left(3000+5400+1200\right)\\ =192000-9600=182400\)
\(1)\left(3^{12}+3^{11}\right):3^{10}\)
\(=3^{12}:3^{10}+3^{11}:3^{10}\)
\(=3^2+3\)
\(=12\)
các câu còn lại lm tương tự nhé
1) 5 + (-4) = 1
2) (-8) + 2 = -6
3) 8 + (-2) = 6
4) 11 + (-3) = 8
5) (-11) + 2 = -9
6) (-7) + 3 = -4
7) (-5) + 5 = 0
8) 11 + (-12) = -1
9) (-18) + 20 = 2
10) (15) + (-12) = 3
11) (-17) + 17 = 0
12) 16 + (-2) = 14
13) (30) + (-14) = 16
14) (-19) + 20 = 1
15) (-18) + 15 = -3
16) (10) + (-6) = 4
17) (-28) + 14 = -14
18) 15 + (-30) = -15
19) (15) + (-4) = 11
20) (-21) + 11 = -10
21) 8 + (-22) = -14
22) (-15) + 4 = -11
23) (-3) + 2 = -1
24) 17 + (-14) = 3
25) 17 + (-14) = 3
5 + (-2) + (18 - 23) + 2
= [(-2) + 2] + [5 + (18 - 23)]
= 0 + [5 + (-5)]
= 0 + 0 = 0
Câu kia đợi mai nha
303-3. {[655-(18:2+1).43+5]}:100
=303-3.{[655-(18:2+1).64+5]}:1
=303.3{[655-(9+1).64+5]}:1
=303.3{[655-10.64+5]}:1
=303.3{[655-640+5]}:1
=303.3{[15+5]}:1
=303.3.20:1
=909.20:1
=18180:1
=18180
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