101 - {36 +[7 . 32 - 24 : 3 +(9 - 7)3 ]}:32
500 - {5[409 - 23.3 - 21 )2]+ 103}: 15
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(500-\left\{5\left[409-\left(2^3\cdot3-21\right)^2+10^3\right]\right\}:15\)
\(=500-\left\{5\left[409-9+1000\right]\right\}:15\)
\(=500-\left\{5\cdot1400\right\}:15\)
\(=500-7000:15\)
\(=500-\dfrac{1400}{3}\)
\(=\dfrac{100}{3}\)
\(67-\left[8+7\cdot3^2-24:6+\left(9-7\right)^2\right]:15\)
\(=67-\left[8+7\cdot9-24:6+4\right]:15\)
\(=67-\left[8+63-4+4\right]:15\)
\(=67-71:15\)
\(=67-\dfrac{71}{15}\)
\(=\dfrac{934}{15}\)
\(PeaGea\)
a)58(-45+-24)+-69.42
=58.(-69)+(-69).42
=-69.(58+42)
=-69.100
=-6900
a;
A= 58.(-45) + (-58).24 + (-69).42
A = -58.(45 + 24) - 69.42
A =-58.69 - 69.42
A = -69.(58 + 42)
A = -69.100
A = -6900
b; 139 - (-65 + 239) - (85 + 120)
B = 139 + 65 - 239 - 85 - 120
B = -(239 - 139) - (85 - 65) - 120
B = - 100 - 20 - 120
B = - 120 - 120
B = - 240
1200 - {5.[409 - (23. 3 - 21)2 ] + 103 } :15
=1200 - {5.[409 - (8.3 - 21)2 ] + 103 } :15
=1200 - {5.[409 - (24 -21)2 ] + 103 }:15
=1200 - {5.[409 - 32 ] + 103 }:15
=1200 - {5.[409 - 9 ]+1000}:15
=1200 - {5.400 +1000}:15
=1200 - {2000 + 1000}:15
=1200 - 3000:15
=1200 - 200
=1000
Nếu có gì sai sót cho mình xin lỗi
{5[409 – (23.3 – 21)2] + 103} : 15
={5[409 – (8.3 – 21)2] + 1000} : 15
={5[409 – (24 – 21)2] + 1000} : 15
={5[409 – 32] + 1000} : 15
={5[409 –9] + 1000} : 15
={5.400+ 1000} : 15
={2000+ 1000} : 15
=3000: 15
TỰ tính nốt đi
={5.[409-(8.3-21)2]+1000}:15
={5.[409-(24-21)2]+1000}:15
={5.[409-32]+1000}:15
={5.[409-9]+1000}:15
={5.400+1000}:15
={2000+1000}:15
=3000:15=200
Thứ tự thực hiện phép tính:tính lũy thừa->tính ngoặc tròn->vuông->nhọn
a, 75 + 58.50 – 58.25 = 3.25 + 58.(50 – 25) = 3.25 + 58.25 = 25.(3+58) = 25.61 = 1525
Ta có: 1525 = 5 2 . 61
b, 20: 2 2 – 5 9 : 5 8 = 20:4 – 5 = 5 – 5 = 0
c, 5 19 : 5 17 - 4 : 7 = 5 2 - 4 : 7 = (25 – 4):7 = 3
d, 47 - 45 . 2 4 - 5 2 . 12 : 14 = 47 – (45.16 – 25.12):14 = 47 – (720 – 300):14 = 47 – 420:14 = 47 – 30 = 17
e, 10 2 : 60 : 5 6 : 5 4 - 3 . 5 = 100 – 60: 5 2 - 15 = 100 – 60:(25 – 15) = 100 – 60:10 = 100 – 6 = 94
Ta có: 94 = 2.47
f, 2345 - 1000 : 19 - 2 21 - 18 2 = 2345 – 1000:(19 – 2. 3 2 ) = 2345 – 1000:(19 – 2.9) = 2345 – 1000:(19 – 18) = 2345 – 1000:1 = 2345 – 1000 = 1345
Ta có: 1345 = 3.269
g, 500 – {5.[409 – 2 3 . 3 - 21 2 ]+ 10 3 }:15 = 500 – {5.[409 – 8 . 3 - 21 2 ]+1000}:15 = 500 – {5.[409 – 3 2 ]+1000}:15 = 500 – {5.(409 – 9)+1000}:15 = 500 – {5.400+1000}:15 = 500 – (2000+1000):15 = 500 – 3000:15 = 500 – 200 = 300
Ta có: 300 = 2 2 . 3 . 5 2
h, 967 – [8 + 2 . 3 2 – 24:6 + 9 - 7 3 ].5 = 967 – [8+2.9 – 4+8].5 = 967 – 30.5 = 967 – 150 = 817
Ta có: 817 = 19.43
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37
=(1+37)x37:2
=703
a: =1/8-1/8+2/5=2/5
b: =(-1/15-14/15)+(23/27+31/27)=2-1=1
c: \(=\dfrac{3}{7}\left(\dfrac{22}{21}+\dfrac{5}{21}+\dfrac{15}{21}\right)=\dfrac{3}{7}\cdot2=\dfrac{6}{7}\)
d: \(=\dfrac{-8}{9}\cdot\dfrac{3}{2}+\dfrac{1}{9}\cdot\dfrac{-3}{2}=-\dfrac{3}{2}\)
101 - {36 + [7 . 32 - 24 : 3 + ( 9 - 7)3 ]} : 32
= 101 - [36 + (7 . 9 - 24 : 3 + 23)] : 9
= 101 - [36 + (63 - 8 + 8)] : 9
= 101 - (36 + 63) : 9
= 101 - 99 : 9
= 101 - 11 = 90
trả lời :
101 - {36 + [7 . 32 - 24 : 3 + ( 9 - 7)3 ]} : 32
= 101 - [36 + (7 . 9 - 24 : 3 + 23)] : 9
= 101 - [36 + (63 - 8 + 8)] : 9
= 101 - (36 + 63) : 9
= 101 - 99 : 9
= 101 - 11 = 90