Question

A) 2/8 + 2/4 = 1/4 + 2/4=

B) 3/5 - 1/10 = 6/10 - 11/10 = 5/10=

C) 6/9 - 1/3=

D) 2/5 - 1/10=

Answer 1

Resposta:

A) 2/8 + 2/4 = 1/4 + 2/4

$\frac{2}{8} + \frac{2}{4} = \frac{1}{4} + \frac{2}{4} \\ 0.25 + 0.50 = 0.25 + 0.50 \\ 0.75 = 0.75$

B) 3/5 - 1/10 = 6/10 - 11/10 = 5/10

$\frac{3}{5} - \frac{1}{10} = \frac{6}{10} - \frac{11}{10} = \frac{5}{10} \\ 0.60 - 0.10 = 0.6 -1.1 =0.50 \\ 0.50 = - 0.50 = 0.50$

C) 6/9 - 1/3=

$\frac{6}{9} - \frac{1}{3} = \\ 0.66 - 0.33 = \\ 0.33$

D) 2/5 - 1/10=

$\frac{2}{5} - \frac{1}{10} = \\ 0.4 - 0.1 = \\ 0.3$