Zad 7
Wiemy, że tydzień ma 7 dni, więc:
[tex]4 \frac{4}{5} \times 7 = \frac{24}{5} \times \frac{7}{1} = \frac{168}{5} = 33 \frac{3}{5} [/tex]
Odp: Koń Gniadek zjada 33 3/5 kg owsa w ciągu tygodnia.
Zad 8
[tex]b) \frac{3}{5} \times 15 = \frac{3}{ \not5 {}^{1} } \times \frac{ \not15 {}^{3} }{1} = \frac{9}{1} = 9[/tex]
[tex]c)36 \times \frac{2}{3} = \frac{ \not36 {}^{12} }{1} \times \frac{2}{ \not3 {}^{1} } = \frac{24}{1} = 24[/tex]
[tex]d)16 \times \frac{1}{2} = \frac{ \not16 {}^{8} }{1} \times \frac{1}{ \not 2 {}^{1} } = \frac{8}{1} = 8[/tex]
[tex]e) \frac{3}{10} \times 8 = \frac{3}{ \not10 {}^{5} } \times \frac{ \not8 {}^{4} }{1} = \frac{12}{5} = 2\frac{2}{5} [/tex]
[tex]f)10 \times \frac{11}{12} = \frac{ \not10 {}^{5} }{1} \times \frac{11}{ \not12 {}^{6} } = \frac{55}{6} = 9 \frac{1}{6} [/tex]
[tex]g)4 \times 2 \frac{3}{10} = \frac{ \not4 {}^{2} }{1} \times \frac{23}{ \not10 {}^{5} } = \frac{46}{5} = 9 \frac{1}{5} [/tex]
[tex]h)2 \times 4 \frac{1}{6} = \frac{ \not2 {}^{1} }{1} \times \frac{25}{ \not {}^{} 6 {}^{3} } = \frac{25}{3} = 8 \frac{1}{3} [/tex]
[tex]i)8 \times 1 \frac{3}{4} = \frac{ \not8 {}^{2} }{1} \times \frac{7}{ \not4 {}^{1} } = \frac{14}{1} = 14[/tex]
[tex]j)100 \times 3 \frac{7}{40} = \frac{ \not100 {}^{5} }{1} \times \frac{127}{ \not40 {}^{2} } = \frac{635}{2} = 317 \frac{1}{2} [/tex]
[tex]k)3 \frac{4}{15} \times 30 = \frac{49}{ \not15 {}^{1} } \times \frac{ \not30 {}^{2} }{1} = \frac{98}{1} = 98[/tex]
[tex]l)1 \frac{2}{25} \times 125 = \frac{27}{ \not25 {}^{1} } \times \frac{ \not125 {}^{5} }{1} = \frac{135}{1} = 135[/tex]