Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) 3. 5 ^ 2 + 15. 2 ^2 - 26 : 2
= 15 ^ 2 + 15. 4 - 13
= 225 + 60 - 13
= 272
b) 5 ^ 3. 2 - 100 : 4 + 2 ^ 3. 5
= 125. 2 - 25 + 40
= 250 - 25 + 40
= 265
c) 6 ^ 2 : 9 + 50. 2 - 3 ^ 3. 3
= 36 : 9 + 100 - 81
= 4 + 100 - 81
= 23
d) 3 ^ 2. 5 + 2 ^ 3 . 10 - 81 : 3
= 45 + 8 . 10 - 27
= 53 + 80 - 27
= 160
e) 5 ^ 13 : 5 ^ 10 - 25. 2 ^ 2
= 1220703125 : 9765625 - 25. 4
= 125 - 100
= 25
f) 20 : 2 ^ 2 + 5 ^ 9 : 5 ^ 8
= 20 : 4 + 1953125 : 390625
= 5 + 5
= 10
g) 100 : 5 ^ 2 + 7. 3 ^ 2
= 100 : 25 + 7 . 9
= 4 + 63
= 67
h) 84 :4 + 3 ^ 9 : 3 ^ 7 + 5 ^ 0
= 21 + 19683 : 2187 + 1
= 21 + 9 + 1
= 31
i) 29 - [ 16 + 3. ( 51 - 49) ]
= 29 - [ 16 + 3. 2 ]
= 29 - 22
= 7
Mình làm xong rồi nhé!
a) \(3.5^2+15.2^2-26\div2\)
= 3.25 + 15.4 - 13
= 75 + 60 - 13
= 135 - 13
= 122
b) \(5^3.2-100\div4+2^3.5\)
= 125.2 - 25 + 8.5
= 250 - 25 + 40
= 225 + 40
= 265
c)\(6^2\div9+50.2-3^3.33\)
= 36 : 9 + 100 - 9.33
= 4 + 100 - 297
= 104 - 297
= -193
d)\(3^2.5+2^3.10-81\div3\)
= 9.5 + 8.10 - 27
= 45 + 80 - 27
= 125 - 27
= 98
e) \(5^{13}\div5^{10}-25.2^2\)
= 53 - 25.4
= 125 - 100
= 25
f) \(20\div2^2+5^9\div5^8\)
= 20 : 4 + 5
= 5 + 5
= 10
a) \(26+173+74+27\)
\(=\left(26+74\right)+\left(173+27\right)\)
\(=100+200\)
\(=300\)
b) \(75\cdot37+89\cdot46+75\cdot52-89\cdot21\)
\(=75\cdot\left(37+52\right)+89\cdot\left(46-21\right)\)
\(=75\cdot89+89\cdot25\)
\(=89\cdot\left(75+25\right)\)
\(=89\cdot100\)
\(=8900\)
c) \(2^7:2^2+5^4:5^3\cdot2^4-3\cdot2^5\)
\(=2^{7-2}+5^{4-3}\cdot2^4-3\cdot2^5\)
\(=2^5+5\cdot2^4-3\cdot2^5\)
\(=2^4\cdot\left(2+5-3\cdot2\right)\)
\(=2^4\cdot\left(7-6\right)\)
\(=2^4\)
\(=16\)
d) \(100:\left\{250:\left[450-\left(4\cdot5^3-2^2\cdot25\right)\right]\right\}\)
\(=100:\left\{250:\left[450-\left(4\cdot5^3-4\cdot5^2\right)\right]\right\}\)
\(=100:\left[250:\left(450-4\cdot5^2\cdot4\right)\right]\)
\(=100:\left[250:\left(450-400\right)\right]\)
\(=100:\left(250:50\right)\)
\(=100:5\)
\(=20\)
a) 43.27 - 43.23
= 43.(27-23)
= 43.4
= 44
b) 35.77+23.35+53.23
= 35.(77+23) + (5.2)3
= 35.100 + 103
= 35.102+ 102.10
= 102.(35+10)
= 100.45
= 4500
c) 32.5 + 23.10 - 81 : 3
= 9.5 + 8.2.5 - 27
= 5.(9+8.2) - 27
= 5.25 - 27
= 53 - 27
= 98
d) 151-291:288+13.3
= 151 - 23+3
= 151 - 8 + 3
= 146