Thực hiện phép tính:
a) 23.3-(110+8):32
b) 1449-{[(216+184):8].9}
c) 342.163+337.342-103.171
d) (13.1714+4.1714):1713-(14.9-14.5):8
thực hiện phép tính
24:{ 300:[375(150+15.5)]}
1449-[216-184:8).9]
56 : 53 + 3. 32
1449-[216-184:8).9]
=1449-[216-23).9]
=1449-(193.9)
=1449-1737
=-288
24 : { 300 : [ 375 ( 150 + 15 . 5 ) ] }
24 : { 300 : [ 375 ( 150 + 75 ) ] }
24 : [ 300 : ( 375 . 225 ) ]
24 : ( 300 : 84375 )
24 : 4/1125
= 6750
A =4*5^2-2^8:2^6
B =1449-{[(216+184):8]*9}
Giải nhanh
1449- {(216+184)x 8)x9}
muốn giải nhanh thì bấm máy tính đi
Thực hiện phép tính B=1434:{[(216+184:8).3]}
24:{300:[375-(150+15.5)]}
1449:[(216+184):8].9
222+224+226+.....+444
127.36+64.127-127.100
a, \(24:\left\{300:\left[375-\left(150+15.5\right)\right]\right\}\)
\(=24:\left\{300:\left[375-\left(150+325\right)\right]\right\}\)
\(=24:\left\{300:\left[375-225\right]\right\}\)
\(=24:\left\{300:150\right\}\)
\(=24:2=12\)
b, \(1449:\left[\left(216+184\right):8\right].9\)
\(=1449:\left[400:8\right].9\)
\(=1449:50.9\)
\(=28,98.9=260,82\)
c, \(222+224+......+444\)
\(=\dfrac{\left[\left(444-222\right):2+1\right]\left(444+222\right)}{2}\)
\(=37264\)
d, \(127.36+64.127-127.100\)
\(=127\left(36+64-100\right)\)
\(=127.0=0\)
24:\(\left\{300:\left[375-\left(150+15.5\right)\right]\right\}\)
=24:\(\left\{300:\left[375-15.\left(10-5\right)\right]\right\}\)
=24:\(\left\{300:\left[15.25-15.5\right]\right\}\)
=24:\(\left\{300:\left[15.\left(25-5\right)\right]\right\}\)
=24:\(\left\{300:\left[15.20\right]\right\}\)
=24:\(\left\{300:300\right\}\)
=24:1=24
1449:\(\left[\left(216+184\right):8\right].9\)
=1449:(400:8).9
=1449:50.9
=28,98.9=260,82
Thực hiện phép tính
( -99)+(-98)+(-97)+...+97+98+99+100
22.3+(1000+8):9
1450-{(216+184):8].9}
13-18-(-42)+5
Thực hiện phép tính sau :
a) 151 - 291: 288 +12.3
b)1449 - {[(216 + 184):8].9}
c)23.75+25.23+180
d)80 -(4.52 -3.23)
Giúp mình nha ! Cảm ơn nhiều !
a) 151 - 291 : 288 + 12 . 3
= 151 - 23 + 1 . 3
= 151 - 8 + 3
= 143 + 3
= 146
b) 1449 - { [ ( 216 +184 ) : 8 ] . 9 }
= 1449 - { [ 400 : 8 ] . 9 }
= 1449 - { 50 . 9 }
= 1449 - 450
= 999
c) 23 . 75 + 25 . 23 + 180
= 23 . ( 75 + 25 ) + 180
= 23 . 100 + 180
= 2300 + 180
= 2480
d) 80 - ( 4 . 52 - 3 . 23 )
= 80 - ( 4 . 25 - 3 . 8 )
= 80 - ( 100 - 24 )
= 80 - 76
= 4
151-291:288+12*3=151-23+1*3=151-8+1*3=146
b, 1449-{[(216+184):8]*9}=1449-{[400:8]*9}=1449-{50*9} = 1449-450=999
c,23*75+25*23+180=25*(75+23)+180=2630
d,80-(4*52-3*23)=80-(4*25-3*8)=4
Thực hiện phép tính:
a) 8 - ( 3 - 7 )
b) ( - 5 ) - ( 9 - 12 )
c) 7 - ( - 9 ) - 3
d) ( - 3 ) + 8 - 11
Thực hiện phép tính:
A) 8 - ( 3 - 7 )
B) ( - 5 ) - ( 9 - 12 )
C) 7 - ( 9 ) - 3
D) ( - 3 ) + 8 - 11
a, 8-(3-7)
=8-(-4)
=4
b,(-5)-(9-12)
=(-5)-(-3)
=(-8)
c,7-(-9)-3
=(-2)-3
=-1
d.(-3)+8-11
=5-11
=6