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\(\dfrac{-11}{-55}=\dfrac{-11:\left(-11\right)}{\left(-55\right):\left(-11\right)}=\dfrac{1}{5}\\ \dfrac{3}{-11}=\dfrac{3:\left(-1\right)}{-11:\left(-1\right)}=\dfrac{-3}{11}\\ \dfrac{-7}{-33}=\dfrac{-7:\left(-1\right)}{-33:\left(-1\right)}=\dfrac{7}{33}\\ \dfrac{41}{-47}=\dfrac{41:\left(-1\right)}{-47:\left(-1\right)}=\dfrac{-41}{47}\)
\(\dfrac{-11}{-55}=\dfrac{1}{5}\)
\(\dfrac{3}{-11}=\dfrac{-3}{11}\)
\(\dfrac{-7}{-33}=\dfrac{7}{33}\)
\(\dfrac{41}{-47}=\dfrac{-41}{47}\)
a) Ta có : 64 = 8 2 ; 100 = 10 2 ; 144 = 12 2 .
b) Ta có: 64 = 4 3 ; 216 = 6 3 ; 343 = 7 3 .
a) Ta có : 64 = 8 2 ; 100 = 10 2 ; 144 = 12 2 .
b) Ta có: 64 = 4 3 ; 216 = 6 3 ; 343 = 7 3
18/25=72/100
91/4=2275/100
37/20=185/100
86/125=688/1000
71/8=8875/1000
\(1\frac{8}{25}=\frac{33}{25}=1.32\)
\(9\frac{1}{4}=\frac{37}{4}=9.25\)
\(3\frac{7}{20}=\frac{67}{20}=3.35\)
\(8\frac{6}{125}=\frac{1006}{125}=8.048\)
\(7\frac{1}{8}=\frac{57}{8}=7.125\)
49 = 72 ; 169 = 132 ; 100 = 102 ; 196 = 142 ; 81 = 92
1000 = 103 ; 216 = 63;343 = 73 ; 512 = 83 ; 1 = 13 ; 64 = 43
a)2.001=2 1/1000 b)0.00035=35/100000
\(\dfrac{47}{3}=15\dfrac{2}{3}\)
\(\dfrac{105}{100}=1\dfrac{5}{100}\)
\(\dfrac{47}{3}=\dfrac{45+2}{3}=15+\dfrac{2}{3}=15\dfrac{2}{3}\)
\(\dfrac{105}{100}=1+\dfrac{5}{100}=1\dfrac{5}{100}\)