Thực hành phép tính
a)132-[116-(132-1282)]
b)73.9+32.74- 45.539
Những câu hỏi liên quan
Thực hiện phép tính (tính hợp lý nếu có thể):
a) 23.125 + 78.125 - 125
b) 37.46 + 18.54 - 17.46 + 54.2
c) 3.22 - 23 : 2 + 22
d) 73.9 + 32.74 - 45.539
a) 23.125+78.125-125
= (23+78-1).125
= 100.125
= 12500
b) 37.46+18.54-17.46+54.2
= (37-17).46+(18+2).54
= 20.46+20.54
= 20.(46+54)
= 20.100
= 2000
c) 3.22-23:2+22
= 3.22-22+22
= 3.22
= 3.4
= 12
d) 73.9+32.74-45.539
= 73.9+9.74-5.9.72.11
= 9.(73+74)-5.9.72.11
=9.2744-9.2695
= 9.(2744-2695)
= 9.49
= 441
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a/
=125(23+78-1)=125.100=12500
b/
=46(37-17)+54(18+2)
=20(46+54)=20.100=2000
c/
=3.22-22+22=3.4=12
d/
=73.32+32.74-5.32.72.11=
=32.72(7+72-55)=32.72=441
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a)
23.125 + 78.125 -125
=125.(23+78-1)
=125.100
=12500
b)
37.46+18.54-17.46+54.2
=46.(37-17)+54.(18+2)
=46.20+54.20
=(46+54).20
=100.20
=2000
c)
3.22-23:2+22
=3.22-22+22
=3.22-(22-22)
=3.22
=3.4
=12
d)
73.9+32.74-45.539
=73.9+9.73.7-9.5.72.11
=9.73.(1+7)-9.72.(5.11)
=9.72.7.8-9.72.55
=9.72.(7.8-55)
=9.49.(56-55)
=441.1
=441
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Thực hiện phép tính (tính hợp lý nếu có thể):
a) 23.125 + 78.125 - 125
b) 37.46 + 18.54 - 17.46 + 54.2
c) 3.22 - 23 : 2 + 22
d) 73.9 + 32.74
\(a,23\cdot125+78\cdot125-125\\ =125\cdot\left(23+78-1\right)\\ =125\cdot100\\ =12500\\ b,37\cdot46+18\cdot54-17\cdot46+54\cdot2\\ =46\cdot\left(37-17\right)+54\cdot\left(18+2\right)\\ =46\cdot20+54\cdot20\\ =20\cdot\left(46+54\right)\\ =20\cdot100\\ =2000\\ b,3\cdot2^2-2^3:2+2^2\\ =3\cdot4-4+4\\ =12\\ d,7^3\cdot9+3^2\cdot7^4\\ =7^3\cdot9+7^4\cdot9\\ =7^3\cdot9\cdot\left(1+7\right)\\ =343\cdot9\cdot8\\ =24696\)
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a) \(23\cdot125+78\cdot125-125\)
\(=125\cdot\left(23+78-1\right)\)
\(=125\cdot100\)
\(=12500\)
b) \(37\cdot46+18\cdot54-17\cdot46+54\cdot2\)
\(=54\cdot\left(18+2\right)+46\cdot\left(37-17\right)\)
\(=54\cdot20+46\cdot20\)
\(=54\cdot\left(20+46\right)\)
\(=20\cdot100\)
\(=2000\)
c) \(3\cdot2^2-2^3:2+2^2\)
\(=3\cdot2^2-2^2+2^2\)
\(=3\cdot2^2\)
\(=3\cdot4\)
\(=12\)
d) \(7^3\cdot9+3^2\cdot7^4\)
\(=7^3\cdot3^2+3^2\cdot7^4\)
\(=7^3\cdot3^2\cdot\left(1+7\right)\)
\(=24696\)
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4 tháng 6 2021 lúc 19:07
Thực hiện phép tính: (Tính nhanh nếu có thể)1) 347.22 – 22 . ( 216 + 184 ) : 8 ; 2) 132 – [116 – ( 132 – 128 )2] ;3) 16 :{400 : [200 – ( 37 + 46 . 3 )]} ; 4) {184 : [96 – 124 : 31 ] – 2 }. 3651 ; 5) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2 ; 6) 33.18 + 72 .42 – 41 .187)( 56 . 46 – 25 . 23 ) : 23 ; 8) ( 28 . 54 + 56 . 36 ) : 21 : 2 ;9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 ) ; 10) ( 2+ 4...
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Thực hiện phép tính: (Tính nhanh nếu có thể)
1) 347.22 – 22 . ( 216 + 184 ) : 8 ;
2) 132 – [116 – ( 132 – 128 )2] ;
3) 16 :{400 : [200 – ( 37 + 46 . 3 )]} ;
4) {184 : [96 – 124 : 31 ] – 2 }. 3651 ;
5) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2 ;
6) 33.18 + 72 .42 – 41 .18
7)( 56 . 46 – 25 . 23 ) : 23 ;
8) ( 28 . 54 + 56 . 36 ) : 21 : 2 ;
9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 ) ;
10) ( 2+ 4 + 6 + ….. + 100 ) . ( 36 . 333 – 108 . 111)
11) ( 5 . 411- 3 .165 ): 410
12) \(\dfrac{7256.4375-725}{3650+4375.7255}\)
4 tháng 6 2021 lúc 15:56
Thực hiện phép tính: (Tính nhanh nếu có thế) 1) 347.222-222.(216+184):82) 132-[116-(132-128)22]3) 16:{400:[200-(37+46.3)]}4) {184:[96-124:31]-2}.36515) ) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2 6) 33.18 + 72 .42 – 41 .18 7)( 56 . 46 – 25 . 23 ) : 23 8) ( 28 . 54 + 56 . 36 ) : 21 : 2 9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 ) 10) ( 2+ 4 + 6 + ….. + 100 ) . ( 36 . 333 – 108 . 111) 11) ( 5 . 411- 3 .165 ): 410 12...
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Thực hiện phép tính: (Tính nhanh nếu có thế)
1) 347.222-222.(216+184):8
2) 132-[116-(132-128)22]
3) 16:{400:[200-(37+46.3)]}
4) {184:[96-124:31]-2}.3651
5) ) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2
6) 33.18 + 72 .42 – 41 .18
7)( 56 . 46 – 25 . 23 ) : 23
8) ( 28 . 54 + 56 . 36 ) : 21 : 2
9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 )
10) ( 2+ 4 + 6 + ….. + 100 ) . ( 36 . 333 – 108 . 111)
11) ( 5 . 411- 3 .165 ): 410
12) 7256.4375−725/3650+4375.7255
Giải;
1) \(347.222-222.\left(216+184\right):8\)
\(=347.222-222.400:8\)
\(=347.222-222.50\)
\(=222.\left(347-50\right)\)
\(=222.297\)
\(=65934\)
2) \(132-\left[116-\left(132-128\right).22\right]\)
\(=132-\left[116-4.22\right]\)
\(=132-\left[116-88\right]\)
\(=132-28\)
\(=104\)
3) \(16:\left\{400:\left[200-\left(37+46.3\right)\right]\right\}\)
\(=16:\left\{400:\left[200-\left(37+138\right)\right]\right\}\)
\(=16:\left\{400:\left[200-175\right]\right\}\)
\(=16:\left\{400:25\right\}\)
\(=16:16\)
\(=1\)
4) \(\left\{184:\left[96-124:31\right]-2\right\}.3651\)
\(=\left\{184:\left[96-4\right]-2\right\}.3651\)
\(=\left\{184:92-2\right\}.3651\)
\(=\left\{2-2\right\}.3651\)
\(=0.3651\)
\(=0\)
5) \(46-\left[\left(16+71.4\right):15\right]-2\)
\(=46-\left[\left(16+284\right):15\right]-2\)
\(=46-\left[300:15\right]-2\)
\(=46-20-2\)
\(=24\)
6) \(3^3.18+72.4^2-41.18\)
\(=18.\left(27-41\right)+72.16\)
\(=18.-14+1152\)
\(=-252+1152\)
\(=900\)
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Giải: (tiếp)
7) \(\left(56.46-25.23\right):23\)
\(=\left(2576-575\right):23\)
\(=2001:23\)
\(=87\)
8) \(\left(28.54+56.36\right):21:2\)
\(=\left(1512+2016\right):21:2\)
\(=3528:21:2\)
\(=84\)
9) \(\left(76.34-19.64\right):\left(38.9\right)\)
\(=\left(2584-1216\right):342\)
\(=1368:342\)
\(=4\)
10) \(\left(2+4+6+...+100\right).\left(36.333-108.111\right)\)
\(=\left(2+4+6+...+100\right).\left(11988-11988\right)\)
\(=\left(2+4+6+...+100\right).0\)
\(=0\)
11) \(\left(5.4^{11}-3.16^5\right):4^{10}\)
\(=5.4^{11}:4^{10}-3.16^5:4^{10}\)
\(=5.4-3.1\)
\(=20-3\)
\(=17\)
12) \(7256.4375-725:3650+4375.7255\)
\(=4375.\left(7256+7255\right)-\dfrac{29}{146}\)
\(=4375.14511-\dfrac{29}{146}\)
\(=63485624,8\)
Câu 12 ko chắc!
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4 tháng 6 2021 lúc 15:34
Thực hiện phép tính: (Tính nhanh nếu có thế) 1) 347.2^2-2^2.(216+184):82) 132-[116-(132-128)^2]3) 16:{400:[200-(37+46.3)]}4) {184:[96-124:31]-2}.36515) ) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2 6) 33.18 + 72 .42 – 41 .18 7)( 56 . 46 – 25 . 23 ) : 23 8) ( 28 . 54 + 56 . 36 ) : 21 : 2 9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 ) 10) ( 2+ 4 + 6 + ….. + 100 ) . ( 36 . 333 – 108 . 111) 11) ( 5 . 411- 3 .165 ): 410 12...
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Thực hiện phép tính: (Tính nhanh nếu có thế)
1) 347.2\(^2\)-2\(^2\).(216+184):8
2) 132-[116-(132-128)\(^2\)]
3) 16:{400:[200-(37+46.3)]}
4) {184:[96-124:31]-2}.3651
5) ) 46 – [ (16 + 71 . 4 ) : 15 ]} – 2
6) 33.18 + 72 .42 – 41 .18
7)( 56 . 46 – 25 . 23 ) : 23
8) ( 28 . 54 + 56 . 36 ) : 21 : 2
9) ( 76 . 34 – 19 . 64 ) : ( 38 . 9 )
10) ( 2+ 4 + 6 + ….. + 100 ) . ( 36 . 333 – 108 . 111)
11) ( 5 . 411- 3 .165 ): 410
12) \(\dfrac{7256.4375-725}{3650+4375.7255}\)
132 + [ 116 - (132 - 128)2 ] =
\(132+[116-\left(132-128\right)^2]\)
\(=132+[116-4^2]\)
\(=132+[116-16]\)
\(=132+100\)
\(=232\)
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Thực hiện phép tính hợp lí
132*99+132
168*168-168*58/110
132*99 + 132 = 132 * 100 = 13200
168*168-168*58/110 = 168*(168-58)/110 = 168*110/110 = 168
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Tính giá trị của biểu thức:
a,132-[116-(132-128)2]
b,{[126-(36-31)2]-9}.1001
132-[116-(135-131)]
132-[116-(135-131)]
=132-[116-4]
=132-112
=20
k mik nha
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132-[116-(135-131)]
=132-(116-4)
=132-112
=20
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\(132-\left[116-\left(135-131\right)\right]\)
\(=132-\left[116-4\right]\)
\(=132-112\)
\(=20\)
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