\(10101\times\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3\times7\times11\times13\times37}\right)\)
Tính nhanh
10101x(\(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3\times7\times11\times13\times37}\))
Aps dụng tính chất phân phối của phép nhân đối với phép cộng,ta được:
\(\frac{5}{11}+\frac{5}{22}-\frac{4}{11}=\frac{7}{22}\)
#Châu's ngốc
Tính: \(10101\times\left(\frac{5}{11111}+\frac{5}{22222}-\frac{4}{3\times7\times11\times13\times17}\right)\)
ko có cách nào tính ra đâu chỉ có thể bấm máy tính thôi
\(C=10101\left(\frac{5}{111111}+\frac{5}{222222}+\frac{4}{111111}\right)\)
C=10101(10/222222+5/222222+8/222222)
C=10101.23/222222
C=232323/222222
\(I=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
B= 10101.\(\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(B=10101\cdot\left(\dfrac{5}{111111}+\dfrac{5}{222222}-\dfrac{4}{111111}\right)\)
\(=10101\cdot\left(\dfrac{2}{222222}+\dfrac{5}{222222}\right)\)
\(=10101\cdot\dfrac{1}{31746}=\dfrac{7}{22}\)
\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)
\(A=10101.\left(\frac{10}{222222}+\frac{5}{222222}-\frac{8}{222222}\right)\)
\(A=10101.\left(\frac{7}{222222}\right)\)
\(A=\frac{70707}{222222}\)
\(A=\frac{7}{22}\)
Vậy A = \(\frac{7}{22}\)
Chúc bạn học tốt!
Tính:
10101 . \(\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
10101 . \(\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
= 10101 . \(\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)
= 10101 . \(\frac{7}{222222}\)
= \(\frac{7}{22}\)
Lời giải:
Ta có:
\(A=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)
\(=10101.\left(\frac{10}{222222}+\frac{5}{222222}-\frac{8}{222222}\right)\)
\(=10101.\left(\frac{10+5-8}{222222}\right)\)
\(=10101.\frac{7}{222222}\)
\(=\frac{7.10101}{22.10101}=\frac{7}{22}\)
Chúc bạn học tốt!
Tick cho mình nhé!
\(10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{3.7.11.13.37}\right)\)
\(=10101.\left(\frac{5}{111111}+\frac{5}{222222}-\frac{4}{111111}\right)\)
\(=10101.\frac{7}{222222}\)
\(=\frac{7}{22}.\)
Chúc bạn học tốt!
\(10101.\left(\frac{5}{111111}+\frac{5}{222222}\frac{4}{3.7.11.13.37}\right)\)
=\(10101.\left(\frac{5}{111111}+\frac{5}{222222}.\frac{4}{111111}\right)\)
=\(10101.\left(\frac{5}{111111}+\frac{20}{24691308642}\right)\)
=\(10101.\frac{1111130}{24691308642}\)
=0,4545........
\(C=10101\left(\frac{5}{111111}+\frac{5}{222222}+\frac{4}{3.7.11.13.37}\right)\)