{"id":862,"date":"2016-10-13T09:33:32","date_gmt":"2016-10-13T07:33:32","guid":{"rendered":"http:\/\/www.zsvltava.cz\/fyzika\/?p=862"},"modified":"2025-04-10T07:42:30","modified_gmt":"2025-04-10T05:42:30","slug":"vyjadreni-casu-desetinnym-cislem","status":"publish","type":"post","link":"https:\/\/www.zsvltava.cz\/fyzika\/?p=862","title":{"rendered":"Vyj\u00e1d\u0159en\u00ed \u010dasu desetinn\u00fdm \u010d\u00edslem"},"content":{"rendered":"

Co je desetinn\u00e9 \u010d\u00edslo?<\/h2>\n

Desetinn\u00e9 \u010d\u00edslo vyjad\u0159uje ur\u010ditou \u010d\u00e1st \u010d\u00edsla 1.<\/strong><\/p>\n

\u010c\u00edslo 0,1<\/strong> p\u0159e\u010dteme jako 1 desetina<\/strong>. Desetina znamen\u00e1, \u017ee je celek rozd\u011blen na 10 stejn\u00fdch kousk\u016f. D\u00e1me-li dohromady 10 takov\u00fdch d\u00edlk\u016f, mus\u00ed vyj\u00edt znovu \u010d\u00edslo 1.
\nA opravdu je tomu tak: 10 . 0,1 = 1<\/strong><\/p>\n

\u010c\u00edslo 0,24<\/strong> p\u0159e\u010dteme jako 24 setin<\/strong>. 1 setina z \u010d\u00edsla 1 je 0,01.
\nOp\u011bt se m\u016f\u017eeme p\u0159esv\u011bd\u010dit: 24 . 0,01 = 0,24<\/strong><\/p>\n

V\u00edme, \u017ee 0,5 je 5 desetin. Jeliko\u017e desetin je v celku 10, je 5 desetin p\u0159esn\u011b p\u016flka. To nen\u00ed nic nov\u00e9ho, \u010dastokr\u00e1t p\u0159e\u010dteme \u010d\u00edslo 2,5 jako „dv\u011b a p\u016fl“. Nebo-li 2 a p\u016fl z dal\u0161\u00ed jedni\u010dky.<\/p>\n

Pokud chceme vyj\u00e1d\u0159it \u010dasov\u00fd \u00fadaj pomoc\u00ed desetinn\u00e9ho \u010d\u00edsla, postupujeme stejn\u011b. Je t\u0159eba si akor\u00e1t uv\u011bdomit, na kolik d\u00edlk\u016f budeme d\u011blit jednotku. Hodina ani minuta se toti\u017e obvykle ned\u011bl\u00ed ani na 10 ani na 100 d\u00edlk\u016f.<\/p>\n

1 hodina a 30 minut nen\u00ed 1,3<\/h2>\n

Nevych\u00e1zelo by to! \u010cteme 1 a 3 desetiny. Hodina m\u00e1 60 minut. Desetina z hodiny je tedy 6 minut. 3 desetiny jsou pak 18 minut. Tud\u00ed\u017e 1,3 nem\u016f\u017ee b\u00fdt hodina a 30 minut (hodina a p\u016fl). <\/p>\n

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P\u0159ev\u00e1d\u00edme-li \u010dasov\u00fd \u00fadaj na desetinn\u00e9 \u010d\u00edslo, mus\u00edme zjistit pom\u011br k 1 d\u00edlu. Pro zji\u0161t\u011bn\u00ed minut v\u016f\u010di hodin\u011b a stejn\u011b tak sekund v\u016f\u010di minut\u011b – d\u011bl\u00edme \u010d\u00edslem 60<\/strong>.<\/p>\n

Vyzkou\u0161ej si<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
<\/th>\nhod – min – sek<\/th>\nhodin<\/th>\n<\/tr>\n<\/thead>\n
a)<\/th>\n1 hod 5 minut<\/td>\n1,083 h<\/td>\n<\/tr>\n
b)<\/th>\n12 minut<\/td>\n0,2 h<\/td>\n<\/tr>\n
c)<\/th>\n2 hodiny 48 minut<\/td>\n2,8 h<\/td>\n<\/tr>\n
d)<\/th>\n3 hodiny 140 minut<\/td>\n5,3 h<\/td>\n<\/tr>\n
e)<\/th>\n1 hodina 6 minut 20 sekund<\/td>\n1,106 h<\/td>\n<\/tr>\n
f)<\/th>\n36 minut<\/td>\n0,6 <\/td>\n<\/tr>\n
g)<\/th>\n2 hodiny 15 minut<\/td>\n2,25 <\/td>\n<\/tr>\n
h)<\/th>\n10 hodin 27 minut<\/td>\n10,45<\/td>\n<\/tr>\n
ch)<\/th>\n1 hodina 6 minut<\/td>\n1,1<\/td>\n<\/tr>\n
j)<\/th>\n26 hodin 56 minut 24 sekund<\/td>\n26,94<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

K zamy\u0161len\u00ed<\/h3>\n
    \n
  1. Jak by se vyj\u00e1d\u0159ilo desetinn\u00fdm \u010d\u00edslem:
    12. \u0159\u00edjen 9 hodin 45 minut ve vztahu k m\u011bs\u00edci \u0159\u00edjnu? <\/li>\n
  2. Jak by se vyj\u00e1d\u0159il desetinn\u00fdm \u010d\u00edslem dne\u0161n\u00ed den ve vztahu k tomuto roku? <\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

    Co je desetinn\u00e9 \u010d\u00edslo? Desetinn\u00e9 \u010d\u00edslo vyjad\u0159uje ur\u010ditou \u010d\u00e1st \u010d\u00edsla 1. \u010c\u00edslo 0,1 p\u0159e\u010dteme jako 1 desetina. Desetina znamen\u00e1, \u017ee je celek rozd\u011blen na 10 …. <\/p>\n","protected":false},"author":1,"featured_media":2515,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,39,40],"tags":[88,29,23],"class_list":["post-862","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-priklad","category-priklady-pro-6-rocnik","category-priklady-pro-7-rocnik","tag-matematika","tag-prevody-jednotek","tag-reseny-priklad"],"_links":{"self":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/862","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=862"}],"version-history":[{"count":0,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/posts\/862\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=\/wp\/v2\/media\/2515"}],"wp:attachment":[{"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.zsvltava.cz\/fyzika\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}