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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
1)2345 - 1000 : [19 - 2(21 - 18)2]
=2345 - 1000 : [19 - 2 . 32]
=2345 - 1000 : 1
=2345 - 1000
=1345
\(a.2345-1000:\left[19-2\left(21-18\right)^2\right]\)
\(=2345-1000:\left[19-2\left(3\right)^2\right]\)
\(=2345-1000:\left[19-2.9\right]\)
\(=2345-1000:\left[19-18\right]\)
\(=2345-1000:1\)
\(=2345-1000\)
\(=1345\)
a) 2345 – 1000 : [19 – 2(21 – 18)2]
= 2345 – 1000 : [19 – 2(3)2 ]
= 2345 – 1000 : [19 – 2 . 9 ]
= 2345 – 1000 : [19 – 18]
= 2345 – 1000 : 1
= 2345 – 1000
= 1345
a. \(3.5^2+15.2^2-26:2\)
\(=3.25+15.4-26:2\)
\(=75+60-13\)
\(=122\)
b. \(5^3.2-100:4+2^3.5\)
\(=125.2-100:4+8.5\)
\(=250-25+40\)
\(=265\)
c. \(6^2:9+50.2-3^3.3\)
\(=36:9+50.2-27.3\)
\(=4+100-81\)
\(=23\)
d. \(3^2.5+2^3.10-81:3\)
\(=9.5+8.10-81:3\)
\(=45+80-27\)
\(=98\)
e. \(5^{13}:5^{10}-25.2^2\)
\(=5^3-25.4\)
\(=125-100\)
\(=25\)
f. \(20:2^2+5^9:5^8\)
\(=20:4+5\)
\(=5+5=10\)
a,3.52 + 15.22 - 26:2
=3.25 + 15.4 -26:2
=75+60-13
=122
b,53.2 - 100:4 + 23.5
=125.2 - 100:4 + 8.5
=250 - 25 +40
=265
c,62:9 + 50.2 - 33.3
=36:9 + 50.2 -27.3
=4 + 100 -81
=23
d,32.5 + 23.10 - 81:3
=9.5 +8.10 - 81:3
=45 + 80 -27
=98
e,513:510 - 25.22
=53 - 25.4
=125 - 100
=25
a) 3.52 + 15.22 - 26:2
=3.25 + 15.4 - 13
=75 + 60 -13
=117
b) 53.2 - 100:4 +23.5
=125.2 -25 + 8.5
=250 - 25 + 40
=265
c)62 : 9 + 50.2 - 33.3
=36:9 + 100 - 37.3
=4 + 100 - 81
=23
d)32.5 + 23.10 - 81:3
=9.5 + 8.10 - 27
=45 + 80 - 27
=98
e)513 : 510 - 25.22
=53 - 25.4
=125 - 100
=25
K NHA
=-7
\(a)\)\(47-\left[\left(45.2^4-5^2.12\right)\div14\right]\)
\(=\)\(47-\left[\left(45.16-25.12\right)\div14\right]\)
\(=\)\(47-\left[\left(720-300\right)\div14\right]\)
\(=\)\(47-\left[420\div14\right]\)
\(=\)\(47-30\)
\(=\)\(17\)
\(b)\)\(10-\left[\left(8^2-48\right).5+\left(2^3.10+8\right)\right]\div28\)
\(=\)\(10-\left[\left(64-48\right).5+\left(8.10+8\right)\right]\div28\)
\(=\)\(10-\left[16.5+\left(80+8\right)\right]\div28\)
\(=\)\(10-\left[16.5+88\right]\div28\)
\(=\)\(10-\left[80+88\right]\div28\)
\(=\)\(10-168\div28\)
\(=\)\(10-6\)
\(=\)\(4\)
c) \(2345-1000:\left[19-2\left(21-18\right)^2\right]\)
= \(2345-1000:\left[19-2.3^2\right]\)
= \(2345-1000:\left[19-2.9\right]\)
= \(2345-1000:\left[19-18\right]\)
= \(2345-1000:1\)
= \(1345\)
A. 122
B.256
C.23
e: \(=128-\left[68+8\cdot4\right]:4=128-25=103\)