Odpowiedź:
zad 4
a) 2/5 + 0,77 = 4/10 + 0,77 = 0,4 + 0,77 = 1,17
b) 15,4 + 3 1/3 = 15 4/10 + 3 1/3 = 15 2/5 + 3 1/3 = 15 6/15 + 3 5/15 =
= 18 11/15
c) 8 3/4 + 1,125 = 8 75/100 + 1,125 = 8,75 + 1,125 = 9,875
Obliczenia
[tex]\frac{2}{5}+0,77=\frac{4}{10}+0,77=0,4+0,77=1,17\\\\15,4+3\frac{1}{3}=15\frac{4}{10}+3\frac{1}{3}=15\frac{2}{5}+3\frac{1}{3}=15\frac{6}{15}+3\frac{5}{15}=18\frac{11}{15}\\\\8\frac{3}{4}+1,125=8\frac{3}{4}+1\frac{125}{1000}=8\frac{3}{4}+1\frac{1}{8}=8\frac{6}{8}+1\frac{1}{8}=9\frac{7}{8}[/tex]
