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a) 18 + 36 : 32
= 18 + 36 : 9
= 18 + 4
= 22
b) 23 . 81 + 23 . |-19|
= 2^3 . 81 + 2^3 . 19
= 2^3 ( 81 + 19 )
= 2^3 . 100
= 8 . 100
= 800
c) 2^3 . 5 - [ 6^2 : 4 + 3 ( 2^3 - 5 )]
= 8 . 5 - [ 36 : 4 + 3 ( 8 - 5 )]
= 40 - ( 36 : 4 + 3 . 3 )
= 40 - ( 9 + 9 )
= 40 - 18
= 22
a: \(=36:4+2\cdot25=9+50=59\)
b: \(=79\left(82+18\right)=79\cdot100=7900\)
c: \(=49-9-\left(4^2+2^2\right)\)
\(=40-16-4=40-20=20\)
d: \(=16+\left[400:\left(200-42-138\right)\right]\)
\(=16+400:20=16+20=36\)
a) 54 : 52 + 32 . 33
= 52 + 35 = 25 + 243 = 268
Học tốt!!!
a) 54:52+32.33=52 + 35=25+243 = 278
b) 3+6+9+12+...+96
=3.1+3.2+3.3+3.4+...+3.32
=3.(1+2+3+4+...+32)
=3.\(\frac{\left(32+1\right).32}{2}\)=\(3.33.16=1584\)
a) 22 + 3 . 23 = 22 + 3 . 8 = 22 + 24 = 46
b) 41 . 67 + 33 . 41 = 41 . ( 67 + 33 ) = 41 . 100 = 4100
c) 322 . 5 - [ 622 : 4 + 2 . ( 11 - 8) ] = 322 . 5 - [ 622 : 4 + 2 . 3 ] = 322 . 5 - [ 155,5 + 6 ] = 322 . 5 - 161,5 = 1610 + 161,5 = 1448,5
\(4.\left\{3^2.\left[\left(5^2+2^3\right):11\right]-26\right\}+2009\)
\(=4.\left\{9.\left[\left(25^{ }+8\right):11\right]-26\right\}+2009\)
\(=4.\left\{9.\left[33:11\right]-26\right\}+2009\)
\(=4.\left\{9.3-26\right\}+2009\) \(=4.\left(27-26\right)+2009\)
\(=4.1+2009=2013\)
a: \(=8\cdot252-252:9+1296:52\)
=2016-28+324/13
=26168/13
b: =513+184-679+46-46
=697-679
=18
a) \(\left(-0,75+\frac{1}{2}\right):\frac{4}{3}\)
\(=\frac{-1}{4}:\frac{4}{3}\)
\(=\frac{-3}{16}\)
b) \(\frac{5}{9}.\frac{2}{7}+\frac{5}{9}.\frac{5}{7}-\frac{8}{3}\)
\(=\frac{5}{9}.\left(\frac{2}{7}+\frac{5}{7}\right)-\frac{8}{3}\)
\(=\frac{5}{9}.1-\frac{8}{3}\)
\(=\frac{-19}{9}\)
c) \(7,5.1\frac{3}{4}-6\frac{2}{5}\)
\(=\frac{15}{2}.\frac{7}{4}-\frac{32}{5}\)
\(=\frac{269}{40}\)
[ 504 - ( 52 . 8 + 70 ) : 33 + 6 ] : 125
= [ 504 - ( 25 . 8 + 70 ) : 27 + 6 ] : 125
= [ 504 - ( 200 + 70 ) : 27 + 6 ] : 125
= [ 504 - 270 : 27 + 6 ] : 125
= [ 504 - 10 + 6 ] : 125
= 500 : 125
= 4
36:32 + 23.22 = 36-2 + 23+2 = 34 + 25 = 81 + 32 = 113