Multiple Choice

1. $0,75 -\Box =\frac{1}{4}$ ($\frac{1}{2}$) (!$0,25$)

 ($50%$)

2. $\frac{5}{32} + \Box = 2\frac{3}{4}$ ($2\frac{19}{32}$) (!$0,54$) (!$1\frac{3}{15}$)

4. $\frac{1}{2} + \Box = 3$ (!$2$) ($2\frac{1}{2}$) (!$2,52$)

5. $\frac{4}{8} + \Box = \frac{5}{4}$ ($\frac{6}{8}$) (!$\frac{1}{2}$) ($75%$)

6. $\frac{5}{10} - \Box = \frac{1}{2}$ (!$\frac{1}{4}$) ($0$) (!$\frac{2}{10}$)