Chuyển đổi các hệ cơ số
a) 1CA(16)=.........(10)=...(2)
b)1101(2)=.....(10)...........(16)
c)998=....(16)
d)67(10(=......(2)
e)1111001(10)=.........(16)
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a: \(1CA_{16}=458_{10}=\text{111001010}_2\)
b: \(1101_2=13_{10}=D_{16}\)
c: \(998_{10}=3E6_{16}\)
d: \(67_{10}=\text{1000011}_2\)
e: \(1111001_{10}=10F3D9_{16}\)
a) 1CA(16)=458(10)=111001010(2)
b)1101(2)=13 (10)=D (16)
c)998(10)=3E6(16)
d)67(10)=1000011(2)
e)1111001(10)=10F3D9(16)
a: \(1CA_{16}=458_{10}=\text{111001010}_2\)
b: \(1101_2=13_{10}=D_{16}\)
c: \(998_{10}=3E6_{16}\)
d: \(67_{10}=\text{1000011}_2\)
e: \(1111001_{10}=10F3D9_{16}\)
a) 1CA(16)=458(10)=111001010(2)
b)1101(2)=13 (10)=D (16)
c)998(10)=3E6(16)
d)67(10)=1000011(2)
e)1111001(10)=10F3D9(16)
a: \(1CA_{16}=458_{10}=\text{111001010}_2\)
b: \(1101_2=13_{10}=D_{16}\)
c: \(998_{10}=3E6_{16}\)
d: \(67_{10}=\text{1000011}_2\)
e: \(1111001_{10}=10F3D9_{16}\)
a) 1CA(16)=458(10)=111001010(2)
b)1101(2)=13 (10)=D (16)
c)998(10)=3E6(16)
d)67(10)=1000011(2)
e)1111001(10)=10F3D9(16)
\(23_{10}=\text{10111}_2=17_{16}\)
\(54_{10}=\text{110110}_2=36_{16}\)
\(121_{10}=\text{1111001}_2=79_{16}\)
\(95_{10}=\text{1011111}_2=5F_{16}\)
Câu 3:
a) \(\dfrac{12}{36}=\dfrac{12:12}{36:12}=\dfrac{1}{3}\)
\(\dfrac{-16}{20}=\dfrac{-16:4}{20:4}=\dfrac{-4}{5}\)
b) \(\dfrac{21}{105}=\dfrac{21:21}{105:21}=\dfrac{1}{5}\)
\(\dfrac{35}{150}=\dfrac{35:5}{150:5}=\dfrac{7}{30}\)
Câu 4:
a) \(\dfrac{3}{10}+\dfrac{5}{10}=\dfrac{3+5}{10}=\dfrac{8}{10}=\dfrac{4}{5}\)
b) Ta có: \(\left(-27\right)\cdot36+64\cdot\left(-27\right)+23\cdot\left(-100\right)\)
\(=\left(-27\right)\cdot\left(64+36\right)+23\cdot\left(-100\right)\)
\(=-27\cdot100-23\cdot100\)
\(=100\left(-27-23\right)\)
\(=-50\cdot100=-5000\)
c) \(\dfrac{5}{8}+\dfrac{3}{12}=\dfrac{15}{24}+\dfrac{6}{24}=\dfrac{21}{24}=\dfrac{7}{8}\)
d) Ta có: \(\dfrac{-2}{17}+\dfrac{3}{19}+\dfrac{-15}{17}+\dfrac{16}{19}+\dfrac{5}{6}\)
\(=\left(-\dfrac{2}{17}+\dfrac{-15}{17}\right)+\left(\dfrac{3}{19}+\dfrac{16}{19}\right)+\dfrac{5}{6}\)
\(=-1+1+\dfrac{5}{6}\)
\(=\dfrac{5}{6}\)
a: \(1CA_{16}=458_{10}=\text{111001010}_2\)
b: \(1101_2=13_{10}=D_{16}\)
c: \(998_{10}=3E6_{16}\)
d: \(67_{10}=\text{1000011}_2\)
e: \(1111001_{10}=10F3D9_{16}\)
a) 1CA(16)=458(10)=111001010(2)
b)1101(2)=13 (10)=D (16)
c)998(10)=3E6(16)
d)67(10)=1000011(2)
e)1111001(10)=10F3D9(16)