Thực hiện phép tính 12,475 + 2,97 - 6,925 x 2

a) \(12,475 + 2,97 - 6,925 \times 2\)

= 15,445 – 13,85

= 1,595

b) \(2,3 \times 8 - 3 \times 4,8 + 0,92 \times 10\)

= 18,4 – 14,4 + 92

= 13,2

c) \(\frac{2}{3} \times \frac{5}{4} + \frac{1}{2} \times \frac{7}{6} - \frac{1}{3}\)

\( = \frac{{2 \times 5}}{{3 \times 4}} + \frac{7}{{2 \times 6}} - \frac{1}{3}\)

\( = \frac{{10}}{{12}} + \frac{7}{{12}} - \frac{4}{{12}}\)

\( = \frac{{10 + 7 - 4}}{{12}}\)\( = \frac{{13}}{{12}}\)

d) \(3\frac{2}{{10}} - 2\frac{3}{{100}} + \frac{4}{{25}}\)

\( = \frac{{32}}{{10}} - \frac{{203}}{{100}} + \frac{{16}}{{100}}\)

\( = \frac{{320}}{{100}} + \frac{{16}}{{100}} - \frac{{203}}{{100}}\)

\( = \frac{{336 - 203}}{{100}}\) \( = \frac{{133}}{{100}}\)