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568 - { 5.[ 143 - ( 4-1)^2]+10} : 10
= 568 - { 5.[ 143 - ( 4^2-1^2]+10}:10
= 568 - { 5.[ 143 - 15 ] + 10 } : 10
= 568 - { 5. 128 + 10 } : 10
= 568 - 650 : 10
= 568 - 65
= 503
a)\(568-\left\{5.\text{[}143-\left(4-1\right)^2\text{]}+10\right\}:10\)
\(=568-\left\{5.\left[143-3^2\right]+10\right\}:10\)
\(=568-\left\{5.134+10\right\}\text{ }\)
\(=568-\left(670+10\right)\)
\(=568-680\)
\(=-112\)
b)\(10^2-\left[60:\left(5^6:5^4-3\times5\right)\right]\)
\(=100-\left[60-\left(6^2-15\right)\right]\)
\(=100-\left(60-\left(36-15\right)\right)\)
\(=100-60-36+15\)
\(=19\)
\(a)\)\(568-\left\{5\left[143-\left(4-1\right)^2\right]+10\right\}\div10\)
\(=\)\(568-\left\{5\left[143-3^2\right]+10\right\}\div10\)
\(=\)\(568-\left\{5\left[143-9\right]+10\right\}\div10\)
\(=\)\(568-\left\{5.134+10\right\}\div10\)
\(=\)\(568-\left\{670+10\right\}\div10\)
\(=\)\(568-680\div10\)
\(=\)\(568-68\)
\(=\)\(500\)
\(b)\)\(10^2-\left[60\div\left(5^6\div5^4-3\times5\right)\right]\)
\(=\)\(10^2-\left[60\div\left(5^2-15\right)\right]\)
\(=\)\(10^2-\left[60\div\left(25-15\right)\right]\)
\(=\)\(10^2-\left[60\div10\right]\)
\(=\)\(100-6\)
\(=\)\(94\)
1)=113 6)=114
2)=11 7)=-20
3)=4386 8)=4
4)=265 9)=4
5)=98 10)=150
\(a)47-\left[\left(45.2^4-5^2.12\right):14\right]\)
\(=47-\left[\left(45.16-25.12\right):14\right]\)
\(=47-\left[\left(720-300\right):14\right]\)
\(=47-\left[420:14\right]\)
\(=47-30\)
\(=17\)
\(b)50-\left[\left(20-2^3\right):2+34\right]\)
\(=50-\left[\left(20-8\right)\right]:2+34\)
\(=50-\left[12:2+34\right]\)
\(=50-\left[6+34\right]\)
\(=50-40\)
\(=10\)
\(c)10^2-\left[60:\left(5^6:5^4-3,5\right)\right]\)
\(=10^2-\left[60:\left(5^2-3,5\right)\right]\)
\(=10^2-\left[60:\left(25-3,5\right)\right]\)
\(=10^2-\left[60:21,5\right]\)
\(=100-\dfrac{120}{43}\)
\(=\dfrac{4180}{43}\)
\(d)50-\left[\left(50-2^3.5\right):2+3\right]\)
\(=50-\left[\left(50-8.5\right):2+3\right]\)
\(=50-\left[\left(50-40\right):2+3\right]\)
\(=50-\left[10:2+3\right]\)
\(=50-5+3\)
\(=50-8\)
\(=42\)
\(e)10-\left[\left(8^2-48\right).5+\left(2^3.10+8\right)\right]:28\)
\(=10-\left[\left(64-48\right).5+\left(8.10+8\right)\right]:28\)
\(=10-\left[16.5+\left(80+8\right)\right]:28\)
\(=10-\left[80+88\right]:28\)
\(=10-168:28\)
\(=10-6\)
\(=4\)
\(f)8697-\left[3^7:3^5+2.\left(13-3\right)\right]\)
\(=8697-\left[3^2+2.\left(13-3\right)\right]\)
\(=8697-\left[9+2.10\right]\)
\(=8697-9+20\)
\(=8697-29\)
\(=8668\)
\(g)2011+5\left[300-\left(17-7\right)^2\right]\)
\(=2011+5.\left[300-10^2\right]\)
\(=2011+5.\left[300-100\right]\)
\(=2011+5.200\)
\(=2011+1000\)
\(=3011\)
\(h)695-\left[200+\left(11-1\right)^2\right]\)
\(=695-\left[200+10^2\right]\)
\(=695-200+100\)
\(=695-300\)
\(=395\)
\(i)129-5\left[29-\left(6-1\right)^2\right]\)
\(=129-5\left[29-5^2\right]\)
\(=129-5\left[29-25\right]\)
\(=129-5.4\)
\(=129-20\)
\(=109\)
a) 2010 - 2000 : [486 - 2(72 - 6)]
= 2010 - 2000 : [486 - 2(49 - 6)]
= 2010 - 2000 : [486 - 2 . 43]
= 2010 - 2000 : [486 - 86]
= 2010 - 2000 : 400
= 2010 - 5
= 2005
b) 2345 - 1000 : [19 - 2(21 - 18)2 ]
= 2345 - 1000 : [19 - 2 . 32 ]
= 2345 - 1000 : [19 - 18]
= 2345 - 1000 : 1
= 2345 - 1000
= 1345
c) 128 - [68 + 8(37 - 35)2 ] : 4
= 128 - [68 + 8 . 22 ] : 4
= 128 - [68 + 32 ] : 4
= 128 - 100 : 4
= 128 - 25
= 103
d) 568 - {5[143 - (4 - 1)2 ] + 10} : 10
= 568 - {5[143 - 9 ] + 10} : 10
= 568 - {5 . 134 + 10 } : 10
= 658 - {670 + 10 } : 10
= 658 - 680 : 10
= 658 - 68
= 590
a,\(75-\left(3.5^2-4.2^3\right)\)
\(=75-\left(3.25-4.8\right)=75-\left(75-32\right)\)
\(=75-75+32=32\)
b, \(4.5^2-3.2^3+3^3:3^2\)
\(=4.25-3.8+3=100-24+3=79\)
c, \(58.76+24.58-5.20\)
\(=58.\left(76+24\right)-100=58.100-100\)
\(=100.\left(58-1\right)=100.57=5700\)
d, \(\left[5^2.6-20\left(27-2^5\right)\right]:10-10^0\)
\(=\left[25.6-20.\left(27-32\right)\right]:10-1\)
\(=\left(26.6+20.5\right):10-1\)
\(=\left(156+100\right):10-1=256:10-1\)
\(=15,6-1=14,6\)
Chúc bạn học tốt!!!
1) 75 - (3 . 52 - 4 . 23)
= 75 - (3 . 25 - 4 . 8)
= 75 - (75 - 32)
= 75 - 75 + 32
= 32
2) 4 . 52 - 3 . 23 + 33 : 32
= 4 . 25 - 3 . 8 + 3
= 100 - 24 + 3
= 79
3) 58 . 76 + 24 . 58 - 5 . 20
= 58 . (76 + 24) - 100
= 58 . 100 - 100
= 5800 - 100
= 5700
1)2345 - 1000 : [19 - 2(21 - 18)2]
=2345 - 1000 : [19 - 2 . 32]
=2345 - 1000 : 1
=2345 - 1000
=1345
10 - [ ( 82 - 48 ) x 5 + ( 23 x 10 + 8 ) ] : 28
= 10 - [ ( 64 - 48 ) x 5 + ( 8 x 10 + 8 ) ] :28
=10 - [ 16 x 5 + 88 ] :28
=10 - 168 : 28
=10 - 6 = 4
Ý kiến của mình ạ <333
= 10 - [( 64 - 48 ) . 5 + ( 8 . 10 + 8 ) ] : 28
= 10 - [16 . 5 + ( 80 + 8 ) ] : 28
= 10 - [80 + 88] :28
= 10 - 168 : 28
= 10 - 6
= 4