5+5
5:5
(5*5*5*5*5*5*5*5*5*5*5*5*5*55*5*55**5*5*55*5*5*5*55*5*5*101010101010101010110101010100) / 1011010110110101010101010110101010110110*5252525252525252525252525252525 = ?
lớp 1 học nhân với chia rồi à
thế chắc tao chưa hc lớp 1
1.51894749*10^-13
5+5+5+5+5+55+5+5+5+5+5+5+55+5+5+5+5+5+5+5+55+5+5
= 265
Chúc bạn học tốt
265 nhe
học tốt
x=44444444444444444444444124
Rút gọn các biểu thức: 5 + 5 5 - 5 + 5 - 5 5 + 5
55*55=55*5+55+55*.....
55 * 5 +55+55* ..... = 55*55
= 275 + 55 + 55 x .... = 3025
= 330 + 55 x .... = 3025
55 x ... = 3025 -330
55 x ... = 29695
....= 29695 : 55
..... = 539,9.... ( nếu là toán lớp 4 thì đề sai nhé )
Đúng ghi Đ sai ghi S
a,(55 + 35):5=55:5+35:5
=11+7
=18
b,(41+22):3=41:3+22:3
= 13 + 7
= 20
c,(55+35):5
=90:5
=18
d,(41+22):3
= 63 : 3
= 21
\(\dfrac{1}{55^2}\).\(5^4\).(-11)\(^2\) . \(55^5\) . (\(\dfrac{1}{5^2}\))\(^2\) : (\(5^3\) . \(11^6\)
\(\dfrac{1}{55^2}.5^4.\left(-11\right)^2.55^5.\left(\dfrac{1}{5^2}\right)^2:\left(5^3.11^6\right)\)
\(=\dfrac{5^4.11^2.5^5.11^5}{5^2.11^2}.\dfrac{1}{5^4.5^3.11^6}\)
\(=\dfrac{5^9.11^7}{5^9.11^8}=\dfrac{1}{11}\)
\(=\dfrac{1}{5^2\cdot11^2}\cdot5^4\cdot11^2\cdot55^5\cdot\left(\dfrac{1}{5}\right)^2\cdot\dfrac{1}{5^3\cdot11^6}\)
\(=5^2\cdot5^5\cdot11^5\cdot\dfrac{1}{5^2\cdot5^3\cdot11^6}\)
\(=\dfrac{11^5}{11^6}\cdot\dfrac{5^7}{5^5}=\dfrac{25}{11}\)
hay viet dau phep tinh thich hop vao cho trong de co ket qua la 55
5.......5........5.........5.........5=55
1/5+2/11<x/55<2/5+1/55
1/5 + 2/11 < x/55 < 2/5 + 1/55
=> 11/55 + 10/55 < x/55 < 22/55 + 1/55
=> 21/55 < x/55 < 23/55
=> 21 < x < 23
=> x = 22