Răspuns:
a) 0,15 × 1,2 + 6,25 : 2,5 =
[tex] = \frac{3}{20} \times \frac{6}{5} + \frac{25}{4} \div \frac{5}{2} [/tex]
[tex] = \frac{9}{50} + \frac{25}{4} \times \frac{2}{5} [/tex]
[tex] = \frac{9}{50} + \frac{5}{2} [/tex]
[tex] = \frac{67}{25} [/tex]
b) 17,57 - 0,2 × 3 + 1,44 : 1,2 =
[tex] = \frac{1757}{100} - \frac{1}{5} \times \frac{1}{3} + \frac{36}{25} \div \frac{6}{5} [/tex]
[tex] = \frac{1757}{100} - \frac{1}{15} + \frac{36}{25} \times \frac{5}{6} [/tex]
[tex] = \frac{1757}{100} - \frac{1}{15} + \frac{6}{5} [/tex]
[tex] = \frac{5611}{300} [/tex]
c) 3,5 + 10³ × (0,3)³ + 79,8 : 4,2 =
[tex] = \frac{7}{2 } + \frac{1}{1000} \times \frac{27}{1000} + \frac{399}{5} \times \frac{5}{21} [/tex]
[tex] = \frac{7}{2} + \frac{27}{1000000} \times \frac{1}{19} [/tex]
[tex] = \frac{7}{2} + \frac{3}{1000000} [/tex]
[tex] = \frac{3500003}{1000000} [/tex]
[tex] = 3.500003[/tex]
d) 48 : 0,2 + 3,2³ : 1,6 - 4,3 × 0,1 =
[tex] = \frac{1}{48} \times \frac{5}{1} + \frac{4096}{125} \times \frac{5}{8} \times \frac{1}{10} [/tex]
[tex] = \frac{5}{48} + \frac{256}{125} [/tex]
[tex] = \frac{12913}{6000} [/tex]
[tex] = 2.15217[/tex]
Sper sa fie corect..
