Question

19)Переведите десятичную дробь в обычную и сократите и сложите
а и b, c и d, е и f.
а)2,40
b)3,50
с) 0,45
d) 1,35
е) 4,085
f)5,095​

Answer 1

Ответ:

$2.40 = 2 \frac{40}{100} = 2\frac{4}{10} = 2\frac{2}{5}$

$3.50 = 3 \frac{50}{100} = 3 \frac{5}{10} = 3 \frac{1}{2}$

$2 \frac{2}{5} + 3 \frac{1}{2} = 2 \frac{4}{10} + 3 \frac{5}{10} = 5 \frac{9}{10}$

$0.45 = \frac{45}{100} = \frac{9}{20}$

$1.35 = 1 \frac{35}{100} = 1 \frac{7}{20}$

$\frac{9}{20} + 1 \frac{7}{20} = 1 \frac{16}{20} = 1\frac{4}{5}$

$4.085 = 4 \frac{85}{1000} = 4 \frac{17}{200}$

$5.095 = 5 \frac{95}{1000} = 5 \frac{19}{200}$

$4 \frac{17}{200} + 5 \frac{19}{200} = 9 \frac{36}{200} = 9 \frac{9}{50}$