zajímavé odkazy
https://www.onlinecviceni.cz/exc/pub_list_exc.php?subject=Matematika&class=5&action=show
https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=5&subject=Matematika&search1=09.+Zlomky&topic=01.+Z%C3%A1pis#selid
https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=5&subject=Matematika&search1=08.+P%C5%99evody+jednotek
https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=5&subject=Matematika&search1=06.+P%C3%ADsemn%C3%A9+d%C4%9Blen%C3%AD#selid
https://www.youtube.com/watch?v=2YFBqnj_iCA
https://www.onlinecviceni.cz/exc/pub_list_exc.php?action=show&class=5&subject=Matematika&search1=10.+Desetinn%C3%A1+%C4%8D%C3%ADsla#selid