Frazioni: espressioni con i numeri decimali limitati e periodici

Michael Cheval

In questi esercizi bisogna sapere:

Esercizi per il 6

6.1. $3,5-\cfrac{1}{2}\cdot1,\overline{9}$	$\left[\cfrac{5}{2}\right]$
6.2. $2,\overline{4}-3,5:0,5$	$\left[-\cfrac{41}{9}\right]$

Esercizi per il 7

7.1. $9,5+\left(0,1\right)^{2}:\left(\cfrac{7}{10}\right)$	$\left[\cfrac{333}{35}\right]$
7.2. $0,1\overline{6}:0,75+0,\overline{7}$	$\left[1\right]$

Esercizio per l’8

8.1. $\left(2\cdot4,5\right)^{2}+\left(-2\right)^{3}\cdot\left(0,1\right)^{-1}+\left(10-5,6\right):\cfrac{1}{2}$

$\left[9,8\right]$

Esercizi 9/10

9.1. $\left(0,\overline{3}+0,35\right):\cfrac{41}{20}+0,\overline{1}$	$\left[\cfrac{4}{9}\right]$
10.1. $\left[\left(2-\cfrac{3}{5}:2,25\right):\left(0,0\bar{7}+\cfrac{1}{15}\right)\right]\cdot\cfrac{5}{108}+0,0\bar{3}:\left[\left(1,\overline{6}-\cfrac{1}{7}\right):\left(1+\cfrac{25}{7}\right)\right]$	$\left[\cfrac{59}{90}\right]$