Bài 1:Tính
a)-452-(-67+75-452)
b)50020.18+99.18-(33.32+24.2)
1) 29 - [42 + 3.(51 -49)]
2) 35-{12-[-14+(-2)]}
3) 4.55 - 32 : 24
4) -452-(-67+75-452)
5) 50020.18+99.18-(33.32+24.2)
1: =29-16-3*2=13-6=7
2: =35-12+(-14)-2
=23-16=7
3: =4*3125-32:16
=12500-2
=12498
4: =-452+67-75+452=-8
5: =18+99*18-3^5-2^5
=1800-275
=1525
Tính:
50020.18+99.18-(33.32+24.2)
= 1 . 18 + 99 . 18 - ( 35 + 25)
= 18 . ( 99 + 1) - ( 243 + 32)
= 18 . 100 - 275
= 1800 - 275
= 1525
mọi người tính giúp mình với
a/35-{12-[-14+(-2)]}
b/4.5^5-32:2^4
c/-452-(-67+75-452)
d/1997-[10.(4^3-56):2^3+2^3]. 2005*
e/5002*.18+99.18-(3^3.3^2+2^4.2)
bấm máy tính đi
a) 96
b) 69
c)96
d)96
e)69
-452-(-67+75-452)
=-452-(-67+75-452)
=-452+67-75+452
=(452-452)+67-75
=0+67-75
=67-75
=-8
=-452-(-67+75-452)
=-452+67-75+452
=(452-452)+67-75
=0+67-75
=67-75
=-8
=-452-(-67+75-452)
=- 452 + 67 -75 + 452
=(452 - 452) + 67 - 75
=0 + 67 - 75
=67 - 75 =-8
452-(67-75+452)
\(452-\left(67-75+452\right)\)
\(=452-67+75-452\)
\(=-67+75\)
\(=8\)
\(452-\left(67-75+452\right)\\ =452-67+75-452\\ =\left(452-452\right)-67+75\\ =-67+75\\ =8\)
-452-(-67+75-452)
- 452 - ( - 67 + 75 - 452 )
= - 452 + 67 - 75 + 452
= [(- 452 ) + 452 ] + ( 67 - 75 )
= 0 + ( - 8 )
= - 8
= -452 + 67 - 75 + 452
= 67 - 75
= -8
Phá ngoặc đổi dấu, okeii><
- 452 - ( - 67 + 75 - 452 )
-452 - ( -67 + 75 - 452 )
= -452 + 67 - 75 + 452
= ( -452 + 452 ) + ( 67 - 75 )
= 0 + ( -8 )
= -8
-452 - ( - 67 + 75 - 452 )
-452 - ( - 67 + 75 - 452 )
= -452 + 67 - 75 + 452
= (-452 + 452) + 67 - 75
= 0 + 67 - 75
= 67 - 75
= -8
B1:
a, 35 - {12-[-14 + (-2)]}
b,49 -(-59) - 23
c, -452 - (-67 + 75 - 452 )
a)\(35-\left\{12-\left[-14+\left(-2\right)\right]\right\}\)
\(=35-\left(12+16\right)\)
\(=35-28=7\)
b)\(49-\left(-59\right)-23\)
\(=49+59-23\)
\(=108-23=85\)
c)\(-452-\left(-67+75-452\right)\)
\(=-452+67-75+452\)
\(=\left(-452+452\right)+\left(67-75\right)\)
\(=0+\left(-8\right)=-8\)
`a, 35 - {12-[-14 + (-2)]}`
`= 35 -[ 12- (-16)]`
`=35-(12+16)`
`=35- 28`
`=7`
`b,49 -(-59) - 23`
`=49 + 59-23`
`=108-23`
`=85`
`c, -452 - (-67 + 75 - 452 )`
`= -452 - (8 - 452 )`
`= -452 -(-444)`
`= -452+444`
`= -8`
`@ bThuw`
\(a,35-\left\{12-\left[-14+\left(-2\right)\right]\right\}\\ =35-\left\{12-\left(-16\right)\right\}\\ =35-28\\ =7\\ b,49-\left(-59\right)-23\\ =108-23\\ =85\\ c,-452-\left(-67+75-452\right)\\ =-452-\left(8-452\right)\\ =-452-8+452\\ =\left(-452+452\right)-8\\ =0-8\\ =-8\)