-43 . 38 + 12 . (-43) - 50 . (-43)
(36+79)+(145-79-36)
10-[12-(-9-1)]
(38-29+43)-(43+38)
271-[(43)+271-(-17)]
-144-[29-(+144)-(+144)]
( 36 + 79 ) + ( 145 - 79 - 36 )
= 115 + ( 66 - 36 )
= 115 + 30
= 145
10 - [ 12 - ( - 9 - 1 ) ]
= 10 - [ 12 - ( - 10 ) ]
= 10 - 22
= - 12
( 38 - 29 + 43 ) - ( 43 + 38 )
= ( 9 + 43 ) - 81
= 52 - 81
= - 29
271 - [ ( 43 ) + 271 - ( - 17 ) ]
= 271 - [ 314 - ( - 17 ) ]
= 271 - 331
= - 60
- 144 - [ 29 - ( + 144 ) - ( + 144 ) ]
= - 144 - [ ( - 115 ) - ( + 144 ) ]
= - 144 - ( - 259 )
= 115
(36+79)+(145-79-36)
=115+30
=145
10-[12-(-9-1)]
=10-22
=-12
(38-29+43)-(43+38)
=52-81
=(-29)
271-[(43)+271-(17)]
=271-297
=(-26)
-144-[29-(+144)-(+144)
=-144-(-259)
=115
(36 + 79) + (145 - 79 - 36)
= 36 + 79 + 145 - 79 - 36
= (36 - 36) + (79 - 79) + 145
= 0 + 0 + 145
= 145
10 - [12 - (-9 - 1)]
= 10 - [12 + 9 + 1]
= 10 - 12 - 9 - 1
= 10 - 12 - (9 + 1)
= 10 - 12 - 10
= (10 - 10) - 12
= 0 - 12
= -12
(38 - 29 + 43) - (43 + 38)
= 38 - 29 + 43 - 43 - 38
= (38 - 38) + (43 - 43) - 29
= 0 + 0 - 29
= -29
271 - [(43) + 271 - (-17)]
= 271 - [43 + 271 + 17]
= 271 - 43 - 271 - 17
= (271 - 271) - (43 + 17)
= 0 - 60
= -60
-144 - [29 - (+144) - (+144)]
= -144 - [29 - 144 - 144]
= -144 - 29 + 144 + 144
= (-144 + 144) + (-29 + 144)
= 0 + 115
= 115
1) Bỏ dấu ngoặc rồi tính:
a) (38 - 29 +43) - (43+38)
b) 271-[(-43) + 271-(-17)]
c) (-11)^2 . 3-[3-(-50).(-4)]
d)4.5^2 +81.3^2-(13-4)^2
a, (38 - 29 + 43) - (43 + 38)
= 38 - 29 + 43 - 43 - 38
= (38 - 38) + (43 - 43) - 29
= -29
b, 271 - [(-43) + 271 - (-17)]
= 271 - (-43 + 271 + 17)
= 271 + 43 - 271 - 17
= (271 - 271) + (43 - 17)
= 26
@Dương Taurus
c, (-11)2.3 - [3 - (-50).(-4)]
= 121.3 - [(3 + 50.(-4)]
= 363 - 3 + 200
= 560
d, 4.52 + 81.32 - (13 - 4)2
= 4.25 + 81.9 - 132 + 42
= 100 + 729 - 169 + 16
= 676
@Dương Taurus
a) (-145) – (18 – 145)
b) 111 + (-11 + 27)
c) (27 + 514) – (486 – 73)
d) 10 – [12 – (-9 – 1)]
e) (38 – 29 + 43) – (43 + 38)
f) 271 – [(-43) + 271 – (-17)]
mn giúp mình vs mình đang gấp
bỏ ngoặc rùi tính ạ
[27+514]-[486-73]
10-[12-[-9-1]]
[38-29+43]-[43+38]
271-[[-43]+271-[-17]]
-144-[29-[+144]-[+144]]
bo ngoac roi tinh
27 + 514 - 486 + 73 = 128
10 - 12 - 9 - 1 = - 12
Tk mik mik làm nốt cho
Mik mới bị trừ 50 chục điểm bùn qúa T_T
[27 + 514] - [486 - 73]
= 27 + 514 - 486 + 73
= (27 + 73) + ( 514 - 486)
= 100 + 28
= 128
10 - [12 - [-9 -1]]
= 10 - 12 - 9 - 1
= -12
[38 - 29 + 43] - [43 + 38]
= 38 - 29 + 43 - 43 - 38
= (38 - 38) - 29 + (43 - 43)
= 0 - 29 + 0 = -29
3. Bỏ ngoặc rồi tính :
a, 10 - ( 12 - ( -9 -1 ) )
b, ( 38 -29 + 43 ) - ( 43 + 38 )
c, 271 - ( (-43 ) + 271 - ( -17 ) )
d, -144 - ( 29 - ( + 144 ) - ( + 144 )
a) 10-(12-(-9-1))
= 10 - ( 12 + 9+1)
=10-12-9-1
=-12
b) ( 39-29+43) - (43+38)
= 39-29+43-43-38
= 39-38+(43-43)-29
=1+0-29
= -28
Tính
a . 25 − 58 − 9 b . 1 − ( 26 + 3 ) c . 12.15 − 12.5 d . 10 − [ 12 − ( − 9 − 1 ) ] e . ( 38 − 29 + 43 ) − ( 43 + 38 ) f . 2575 + 37 − 2576 − 29
a . 25 − 58 − 9 = - 31 b . 1 − ( 26 + 3 ) = - 28 c . 12.15 − 12.5 = 120 d . 10 − [ 12 − ( − 9 − 1 ) ] = -12 e . ( 38 − 29 + 43 ) − ( 43 + 38 ) = - 29 f . 2575 + 37 − 2576 − 29 = 7
Bỏ ngoặc rồi tính:
f. (36 + 79) + (145 - 79 - 36)
g. 10 - [12 - (-9 - 1]
h. (38 - 29 + 43) - (43 + 38)
i. 271 - [(-43) + 271 - (-17)]
k. -144 - [29 - (+144) - (+144)]
f,(36+79)+(145-79-36)
=36+79+145-79-36
=(36-36)+(79-79)+145
=0+0+145
=145
g,10-[12-(-9-1)]
=10-(12+9+1)
=10-(12+10)
=10-12-10
=(10-10)-12
=0-12
=-12
h,(38-29+43)-(43+38)
=38-29+43-43-38
=(38-38)-29+(43-43)
=0-29+0
=-29
i,271-[(-43)+271-(-17)]
=271-(-43+271+17)
=271+43-271-17
=(271-271)+(43-17)
=0+26
=26
k,-144-[29-(+144)-(+144)]
=-144-(29-144-144)
=-144-29+144+144
=(-144+144)-29+144
=0-29+144
=-29+144
=115
a.10-[12-(-9-1)].
b.271-[(-43)+271-(-17)].
c.(144-97)-144.
d.111+(-11+27).
e.(36+79)+(145-79-36).
f.(38-29+43)-(43+38).
g.4524-(864-999)-(36+999)
-5-9-11-24
-14-7-12-24
12+38-30-22
34+(-43)+66-55
-10-14-16+43
-5-9-11-24
=-14-11-24
=-25-24
=-49
-14-7-12-24
=-21-12-24
=-33-24
=-57
12+38-30-22
=50-30-22
=20-22
=-2
34+(-43)+66-55
=-9+66-55
=57-55
=2
-10-14-16+43
=-24-16+43
=-40+43
=3
4
1
62
31
321
3132132
3145461320...................22222222222222222222222223130
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30.
3062+958*+96
33
.36+9.03693
.36363.