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a) 12 : { 400 : [500 – (125 + 25 . 7)]}
=12 : { 400 : [500 – (125 + 175)]}
=12 : [ 400 : [500 – 300)]
=12 : (400:200)
=12:2=6
b) 5 . 22 – 18 : 3
=5.4-6
=20-6=14
c) 18 : 3 + 182 + 3.(51 : 17)
=5+182+3.3
=187+9=196
d) 25 . 8 – 12.5 + 170 : 17 – 8
=200-60+10-8
=142
e) 2.52+ 3: 710 – 54: 33
=2.25+3:1-54:27
=50+3-2
=51
f) 189 + 73 + 211 + 127
=(189+211)+(73+127)
=400+200=600
g) 375 : {32 – [ 4 + (5. 32– 42)]} – 14 )
=375 : {32 – [ 4 + (160– 42)]} – 14 )
=375 : [32 – ( 4 + 118) – 14 ]
=375:(32-122-14)
=375:-104
=-375/104
h) (52022 + 52021) : 52021
=(52022:52021)+(52021:52021)
=5+1=6
a) ( 175 + 325 ) + ( 64 + 536 )
= 500 + 600
= 1100
b) 82 . ( 34 + 63 + 3 )
= 82 . 100
= 8200
c) 4 . 25 . 35.2
= 100 . 70
= 7000
a) 62 : 22 . 3 + 2 . 52
= 36 : 4 . 3 + 2 . 25
= 9 . 3 + 2 . 25
= 27 + 50 = 77
b) 2 . 52 - 25 : 5 . 2060
= 2 . 25 - 25 : 5 . 1
= 50 - 5 = 45
c) 32 . 25 + 32 . 75
= 32 . ( 25 + 75 )
= 9 . 100 = 900
d) 20050 . (32 - 13 ) + 32
= 1 . (9 - 1) + 9
= 1 . 8 + 9
= 8 + 9 = 17
a, \(6^2:2^2\times3+2\times5^2\)
\(=36:4\times3+2\times25\)
\(=27+50=77\)
b. \(2\times5^2-25:5\times206^0\)
\(=50-5=45\)
c,\(3^2\times25+3^2\times75\)
\(=3^2\left(25+75\right)\)
\(=9\times100=900\)
a, 2x - 20 = 35 : 32
=> 2x - 1 = 33
=> 2x - 1 = 27
=> 2x = 28
=> x = 14
b, 525.5x + 1 = 525
=> 525+x+1 = 525
=> 25 + x + 1 = 25
=> 26 + x = 25
=> x = -1
a. 2x - 20 = 35 : 32
2x - 1 = 33
2x = 27 + 1
2x = 28
x = 28 : 2
x = 14.
33:32+25:16-1000
=31+25:16-1000
=3+32:16-1
=3+2-1
=5-1
=4
(52.5+20.52):25
=(25.5+20.25):25
=(125+100):25
=225:25
=9
TL:
20210 - [225 : (20 . 15 - 23 . 52) - 25]
= 1 - [225 : (300 - 8 . 25) - 25]
= 1 - [225 : (300 - 200) - 25]
= 1 - [225 : 100 - 25]
= 1 - [2,35 - 25]
= 1 - (-22,65)
= 23,65
HT