23.10 - 32.5 - 1
a) 3.52 + 15.22 – 26:2
b) 2021 + 5[300 – (17 – 7)2]
c) 32.5 + 23.10 – 81
a) 3.52 + 15.22 - 26 : 2
= 3.25 + 15.4 - 13
= 75 + 60 - 13
= 135 - 13
= 122
b) 2021 + 5.[300 - (17 - 7)2]
= 2021 + 5.[300 - 102]
= 2021 + 5.[300 - 100]
= 2021 + 5.200
= 2021 + 1000
= 3021
c) 32.5 + 23.10 - 81
= 9.5 + 8.10 - 81
= 45 + 80 - 81
= 125 - 81
= 44
a) 3.52 + 15.22 - 26 : 2
= 3. 25 + 15 . 4 - 26 : 2
= 75 + 60 - 13
= 135 - 13
= 122
b) 2021 + 5[300 - (17 - 7)2 ]
= 2021 + 5[300 - 102 ]
=2021 + 5[300 - 100]
=2021 + 5.200
=2021 + 1000
= 3021
c) 32 . 5 + 23 . 10 - 81
= 9 . 5 + 8 . 10 - 81
= 45 + 80 - 81
= 125 - 81
= 44
a) 3.52 + 15.22 – 26:2 b) 53.2 – 100 : 4 + 23.5
c) 62 : 9 + 50.2 – 33.3 d) 32.5 + 23.10 – 81:3
e) 2345 – 1000 : [19 – 2(21 – 18)2] f) 128 – [68 + 8(37 – 35)2] : 4
g) 568 – {5[143 – (4 – 1)2] + 10} : 10 h) 107 – {38 + [7.32 – 24 : 6+(9
\(a.3.52+15.22-26:2\\ 156+330-13\\ =486-13\\ =473\)
\(b.53.2-100:4+23.5\\ =106-25+115\\ =81+115\\ =196\)
A)3.52+15.22-26:2
= 3.25+15x4-26:2
= 75+60-13
=122
B)52.9+50.2-33.3
=125.2-25+8
=225+40.
=265
C)62:9+50.2-33.3
=36:9+100-27.3
=7+100-81
=7+19
= 26
Bài 1:Thựchiệnphéptính:
a) 3.52 + 15.22 – 26:2 b)53.2 – 100 : 4 + 23.5 c)62 : 9 + 50.2 – 33.3
d)32.5 + 23.10 – 81:3 e)513 : 510 – 25.22g)20 : 22 + 59 : 58
h)100 : 52 + 7.32 h)84 : 4 + 39 : 37 + 50 i)29 – [16 + 3.(51 – 49)]
mk cần gấp
\(a,=75+60-13=122\\ b,=250-25+40=265\\ c,=4+100-9=95\\ d,=45+80-27=98\\ e,=5^3-100=125-100=25\\ g,=5+5=10\)
a)
=\(3.5.5+3.5.2-13=3.5\left(5+2\right)-13=15.7-13=105-13=92\)
b)
\(=5^3.2-25+2^3.5=5.25-5.5+8.5=5\left(25-5+8\right)=5.28=140\)
c)
\(6^2:9+50.2-3^3.3=36:9+100-3^4\)
=\(4+100-81\)=23
a: \(3\cdot5^2+15\cdot2^2-26:2\)
\(=75+60-13\)
=122
b: \(5^3\cdot2-100:4+2^3\cdot5\)
\(=250-25+40\)
=265
c: \(6^2:9+50\cdot2-3^3\cdot3\)
\(=4+100-9\)
=95
Bài 1: Thực hiện phép tính: a) 3.52 + 15.22 – 26:2 b) 53.2 – 100 : 4 + 23.5 c) 62 : 9 + 50.2 – 33.3 d) 32.5 + 23.10 – 81:3 e) 513 : 510 – 25.22 f) 20 : 22 + 59 : 58 g) 100 : 52 + 7.32 h) 84 : 4 + 39 : 37 + 50 i) 29 – [16 + 3.(51 – 49)] j) (519 : 517 + 3) : 7 k) 79 : 77 – 32 + 23.52 l) 1200 : 2 + 62.21 + 18 m) 59 : 57 + 70 : 14 – 20 n) 32.5 – 22.7 + 83 o) 59 : 57 + 12.3 + 70 p) 5.22 + 98 : 72 q) 311 : 39 – 147 : 72 r) 295 – (31 – 22.5)2 s) 151 – 291 : 288 + 12.3 t) 238 : 236 + 51.32 - 72 u) 791 : 789 + 5.52 – 124 v) 4.15 + 28:7 – 620 : 618 w) (32 + 23.5) : 7 x) 1125 : 1123 – 35 : (110 + 23) – 60 y) 520 : (515.6 + 515.19) z) 718 : 716 +22.33 aa) 59.73 - 302 + 27.59
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cân báo cáo
Tính:
1)142 -[50-(23.5-23.10)]
2)[(-18)+3].(-4)+(-72)
3)25-[49-(22.14-22.17)]
1: \(142-\left[50-\left(2^3\cdot5-2^3\cdot10\right)\right]\)
\(=142-\left[50-2^3\left(5-10\right)\right]\)
\(=142-\left[50-8\cdot\left(-5\right)\right]\)
\(=142-\left[50+40\right]\)
=142-90
=52
2: \(\left[-18+3\right]\cdot\left(-4\right)+\left(-72\right)\)
\(=\left(-15\right)\cdot\left(-4\right)+\left(-72\right)\)
\(=60-72=-12\)
3: \(25-\left[49-\left(2^2\cdot14-2^2\cdot17\right)\right]\)
\(=25-\left[49-2^2\left(14-17\right)\right]\)
\(=25-\left[49-4\cdot\left(-3\right)\right]\)
\(=25-\left[49+12\right]\)
=25-61
=-36
23.135+75.23-23.10
\(23\cdot135+75\cdot23-23\cdot10\)
\(=23\cdot\left(135+75-10\right)\)
\(=23\cdot\left(210-10\right)\)
\(=23\cdot200\)
\(=4600\)
#\(Toru\)
23 . 135 + 75 . 23 - 23 . 10
= 23 x (135 + 75 - 10)
= 23 . 200
= 4600
23.135 + 75. 23 - 23. 10
= 23 . ( 135 + 75 - 10 )
= 23 . 200
= 4600
--tho-- là tớ💋
10-[ (82-48).5+(23.10+8):28]
\(10-\left[\left(8^2-48\right)\cdot5+\left(23\cdot10+8\right):28\right]\)
\(=10-\left[\left(64-48\right)\cdot5+\left(230+8\right):28\right]\)
\(=10-\left(16\cdot5+238:28\right)\)
\(=10-\left(80+\dfrac{17}{2}\right)\)
\(=10-80-\dfrac{17}{2}\)
\(=-17-\dfrac{17}{2}\)
\(=-17-8,5\)
\(=-25,5\)
11/23.2/23+9/23.10/23
\(\frac{11}{23}.\frac{2}{23}+\frac{9}{23}.\frac{10}{23}=\frac{22+90}{23.23}=\frac{112}{529}\)
107 – {38 + [7.32 – 24 : 6+(9 – 7)3]}:15
17) 10 – [(82 – 48).5 + (23.10 + 8)] : 28 - 70
\(107-\left\{38+\left[7.3^2-24:6+\left(9-7\right)^3\right]\right\}:15\)
\(=107-\left\{38+\left[7.3^2-24:6+2^3\right]\right\}:15\)
\(=107-\left\{38+\left[7.3^2-4+2^3\right]\right\}:15\)
\(=107-\left\{38+\left[63-4+2^3\right]\right\}:15\)
\(=107-\left\{38+\left[59+2^3\right]\right\}:15\)
\(=107-\left\{38+67\right\}:15\)
\(=107-105:15\)
\(=107-7\)
\(=100\)
107 – {38 + [7.32 – 24 : 6+(9 – 7)3]}:15
= 107 - {38+ [7.32 - 24 : 6 + 23 ]} : 15
= 107 - {38 + [ 7.9 - 24 : 6 + 8]} :15
= 107 - {38+[ 63 - 4 + 8]} : 15
= 107 - {38 + 67} : 15
= 107 - 105 : 15
= 107 - 7
= 100
17) 10 – [(82 – 48).5 + (23.10 + 8)] : 28 - 70
= 10 - [(64 - 48).5 + (8.10 +8)] : 28 - 70
= 10 - [16.5 + 88] : 28 - 70
= 10 - [80 + 88] : 28 - 70
= 10 - 168 : 28 - 70
= 10 - 6 - 1
= 3
nếu sai câu nào mong bạn thông cảm ^^
107 – {38 + [7.32 – 24 : 6+(9 – 7)3]}:15
= 107 - {38+ [7.32 - 24 : 6 + 23 ]} : 15
= 107 - {38 + [ 7.9 - 24 : 6 + 8]} :15
= 107 - {38+[ 63 - 4 + 8]} : 15
= 107 - {38 + 67} : 15
= 107 - 105 : 15
= 107 - 7
= 100
17) 10 – [(82 – 48).5 + (23.10 + 8)] : 28 - 70
= 10 - [(64 - 48).5 + (8.10 +8)] : 28 - 70
= 10 - [16.5 + 88] : 28 - 70
= 10 - [80 + 88] : 28 - 70
= 10 - 168 : 28 - 70
= 10 - 6 - 1
= 3