Odpowiedź :
Poziom C
e)4 2/5+3 4/5= 8 1/5
h) 11 4/9-5 1/9= 6 3/9 co po skroceniu daje 6 1/3
Poziom D
e)3 1/5+5 3/5-2 2/5= 8 4/5+2 2/5= 11 1/5
f)11 5/7-3 2/7-4 3/7= 8 3/7-4 3/7= 4
e)4 2/5+3 4/5= 8 1/5
h) 11 4/9-5 1/9= 6 3/9 co po skroceniu daje 6 1/3
Poziom D
e)3 1/5+5 3/5-2 2/5= 8 4/5+2 2/5= 11 1/5
f)11 5/7-3 2/7-4 3/7= 8 3/7-4 3/7= 4
Poziom C
e)
[tex]4\frac{2}{5}+3\frac{4}{5}=\frac{22}{5}+\frac{19}{5}=\frac{41}{5}=8\frac{1}{5}[/tex]
h)
[tex]11\frac{4}{9}-5\frac{1}{9} =\frac{103}{9}-\frac{46}{9}=\frac{19}{3} =6\frac{1}{3}[/tex]
Poziom D
e)
[tex]3\frac{1}{5}+5\frac{3}{5}-2\frac{2}{5}=\frac{16}{5}+\frac{28}{5}-\frac{12}{5}=\frac{32}{5}=6\frac{2}{5}[/tex]
f)
[tex]11\frac{5}{7}-3\frac{2}{7}-4\frac{3}{7}=\frac{82}{7}-\frac{23}{7}-\frac{31}{7}=4[/tex]