ÌâÄ¿ÄÚÈÝ
17£®Ö±½Óд³öµÃÊý $\frac{5}{24}$¡Á12= | 6¡Á$\frac{5}{24}$= | $\frac{4}{9}$¡Á$\frac{27}{10}$= | 72¡Â$\frac{8}{9}$= |
$\frac{5}{6}$¡Â12= | $\frac{3}{8}$¡Â$\frac{9}{16}$= | 6-$\frac{5}{21}$= | $\frac{1}{4}$¡Á$\frac{1}{5}$= |
$\frac{4}{7}$¡Á$\frac{21}{24}$= | $\frac{7}{8}$¡Á$\frac{4}{7}$= |
·ÖÎö £¨1£©£¨2£©£¨3£©£¨9£©£¨10£©Ô¼·Ö¼ÆË㣻£¨4£©£¨5£©£¨6£©°Ñ³ý·¨±äΪ³Ë·¨£¬ÄÜÔ¼·ÖµÄÔ¼·Ö¼ÆË㣻£¨7£©°Ñ6±äΪ·ÖĸΪ21µÄ·ÖÊý£¬ÔÙÏà¼õ£»£¨8£©·Ö×ÓÏà³ËµÄ»ý×ö·Ö×Ó£¬·ÖĸÏà³ËµÄ»ý×ö·Öĸ£®
½â´ð ½â£º
$\frac{5}{24}$¡Á12=$\frac{5}{2}$ | 6¡Á$\frac{5}{24}$=$\frac{5}{4}$ | $\frac{4}{9}$¡Á$\frac{27}{10}$=$\frac{6}{5}$ | 72¡Â$\frac{8}{9}$=81 |
$\frac{5}{6}$¡Â12=$\frac{5}{72}$ | $\frac{3}{8}$¡Â$\frac{9}{16}$=$\frac{2}{3}$ | 6-$\frac{5}{21}$=$\frac{121}{21}$ | $\frac{1}{4}$¡Á$\frac{1}{5}$=$\frac{1}{20}$ |
$\frac{4}{7}$¡Á$\frac{21}{24}$=$\frac{1}{2}$ | $\frac{7}{8}$¡Á$\frac{4}{7}$=$\frac{1}{2}$ |
µãÆÀ ±¾Ì⿼²éÁ˼òµ¥µÄ·ÖÊýËÄÔò¼ÆË㣬¼ÆËãʱҪϸÐÄ£¬×¢Òâ°Ñ½á¹û»¯³É×î¼ò·ÖÊý£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
7£®ÄܼòËãµÄÒª¼òË㣮
17¡Á$\frac{9}{16}$ | £¨$\frac{3}{4}$+$\frac{5}{8}$£©¡Á4.8 | $\frac{5}{9}$¡Á$\frac{3}{4}$+$\frac{5}{9}$¡Á$\frac{1}{4}$ |
$\frac{5}{4}$¡Á$\frac{1}{8}$¡Á16 | 72-72¡Á$\frac{5}{12}$£® |