Question

Scrie operațiile corespunzatoare pentru a afla fractiile:
a) mai mici cu 3 supra 10 decât 6 supra 10, 8 supra 10, 9 supra 10 și 10 supra 10;
b) mai mari cu 2 supra 9 decât 5 supra 9, 7 supra 9, 3 supra 9 și 6 supra 9.

Answer 1

a)
6/10-3/10=3/10
8/10-3/10=5/10=1/2
9/10-3/10=6/10=3/5
10/10-3/10=7/10
b).5/9+2/9=7/9
7/9+2/9=9/9=1
3/9+2/9=5/9
6/9+2/9=8/9

Answer 2

a) $\dfrac{6}{10}$-$\dfrac{3}{10}$= $\dfrac{3}{10}$

$\dfrac{8}{10}$- $\dfrac{3}{10}$= $\dfrac{5}{10}$=> $\dfrac{1}{2}$

$\dfrac{9}{10}$- $\dfrac{3}{10}$= $\dfrac{6}{10}$=> $\dfrac{3}{5}$

$\dfrac{10}{10}$- $\dfrac{3}{10}$= $\dfrac{7}{10}$

b) $\dfrac{5}{9}$+ $\dfrac{2}{10}$= $\dfrac{7}{9}$

$\dfrac{7}{9}$+ $\dfrac{2}{9}$= $\dfrac{9}{9}$=>1

$\dfrac{3}{9}$+ $\dfrac{2}{9}$= $\dfrac{5}{9}$

$\dfrac{6}{9}$+ $\dfrac{2}{9}$= $\dfrac{8}{9}$