Odpowiedź :
[tex]a)\\\\0,3\cdot0,1 = \frac{3}{10}\cdot\frac{1}{10} = \frac{3}{100}\\\\0,13\cdot0,2 = \frac{13}{100}\cdot\frac{2}{10} = \frac{13}{100}\cdot\frac{1}{50} = \frac{13}{5000}[/tex]
[tex]b)\\\\1,1\cdot0,07 = \frac{11}{10}\cdot\frac{7}{100} = \frac{77}{1000}\\\\0,91\cdot0,01 = \frac{91}{100}\cdot\frac{1}{100} =\frac{91}{10000}[/tex]
Odpowiedź:
0,3 * 0,1 = 3/10 * 1/10 = 3/100
0,13 * 0,2 = 13/100 * 2/10 = 26/1000
1,1 * 0,07 = 1 i 1/10 * 7/100 = 11/10 * 7/100 = 77/1000
0,91 * 0,01 = 91/100 * 1/100 = 91/10000