8.a) 1/4 godziny - ile to minut? 1 1/4godziny - ile to minut?

B)1/3 doby - ile to godzin? 1 1/3 doby - ile to godzin?


C) 1/5 km - ile to metrów? 2 1/5km - ile to metrów?



8a 14 Godziny Ile To Minut 1 14godziny Ile To Minut B13 Doby Ile To Godzin 1 13 Doby Ile To Godzin C 15 Km Ile To Metrów 2 15km Ile To Metrów class=

Odpowiedź :

Cześć!

a)

[tex]\frac{1}{4} \ h=\frac{1}{4}\cdot60 \ min=\boxed{15 \ min}\\\\1\frac{1}{4} \ h=60 \ min+15 \ min=\boxed{75 \ min}[/tex]

b)

[tex]\frac{1}{3} \ doby=\frac{1}{3}\cdot24 \ h=\boxed{8 \ h}\\\\1\frac{1}{3} \ doby=24 \ h+8 \ h=\boxed{32 \ h}[/tex]

c)

[tex]\frac{1}{5} \ km=\frac{1}{5}\cdot1000 \ m=\boxed{200 \ m}\\\\2\frac{1}{5} \ km=2\cdot1000 \ m+200 \ m=2000 \m+200 \ m=\boxed{2200 \ m}[/tex]

8.

[tex]1 \ h = 60 \ min\\1 \ doba = 24 \ h\\1 \ km = 1000 \ m[/tex]

a)

[tex]\frac{1}{4} \ h = \frac{1}{4}\cdot60 \ min =\underline{ 15 \ min}\\\\1\frac{1}{4} \ h = \frac{5}{4}\cdot 60 \ min = 5\cdot15 \ min = \underline{75 \ min}[/tex]

b)

[tex]\frac{1}{3} \ doby = \frac{1}{3}\cdot24 \ h =\underline{8 \ h}\\\\1\frac{1}{3} \ doby = \frac{4}{3}\cdot24 \ h = 4\cdot8 \ h = \underline{24 \ h}[/tex]

c)

[tex]\frac{1}{5} \ km = \frac{1}{5}\cdot1000 \ m = \underline{200 \ m}\\\\2\frac{1}{5} \ km = \frac{11}{5}\cdot1000 \ m = 11\cdot200 \ m = \underline{2 \ 200 \ m}[/tex]