Question

2£®¼òË㣺
¢Ù$\frac{4}{5}$+9$\frac{4}{5}$+99$\frac{4}{5}$+999$\frac{4}{5}$
¢Ú13$\frac{4}{11}$-£¨2$\frac{2}{3}$-1$\frac{7}{11}$£©
¢Û2000¡Á$\frac{2000}{2001}$
¢Ü2+5+8+11+¡­+59
¢Ý£¨$\frac{5}{6}$+$\frac{7}{4}$+$\frac{5}{12}$£©¡Â$\frac{1}{24}$
¢Þ1$\frac{6}{7}$¡Á3.6+3$\frac{3}{5}$¡Á7$\frac{1}{7}$+3.6£®

Answer 1

·ÖÎö ¢Ù°Ñ´ø·ÖÊý²ð³É¡°ÕûÊý+·ÖÊý¡±µÄÐÎʽ£¬È»ºó°ÑÕûÊýºÍ·ÖÊý·Ö±ðÏà¼Ó£¬ÇóµÃ½á¹û£»
¢ÚÔËÓüõ·¨µÄÐÔÖÊÒÔ¼°¼Ó·¨½»»»ÂÉÓë½áºÏÂɼòË㣻
¢Û°Ñ200¿´×ö2001-1£¬ÔËÓó˷¨·ÖÅäÂɼõËÙ£»
¢Ü±¾ÌâÏȸù¾Ý¸ß˹ÇóºÍÖеÄÇóÏʽÇóµÃ£ºÏîÊý=£¨Ä©Ïî-Ê×Ï¡Â¹«²î+1£¬ÔËÓøß˹ÇóºÍ¹«Ê½½â´ð¼´¿É£»
¢Ý°Ñ³ý·¨±äΪ³Ë·¨£¬ÔËÓó˷¨·ÖÅäÂɼòË㣻
¢ÞÔËÓó˷¨·ÖÅäÂɼòË㣮

½â´ð ½â£º¢Ù$\frac{4}{5}$+9$\frac{4}{5}$+99$\frac{4}{5}$+999$\frac{4}{5}$
=£¨$\frac{4}{5}$+$\frac{4}{5}$+$\frac{4}{5}$+$\frac{4}{5}$£©+£¨9+99+999£©
=3$\frac{1}{5}$+£¨10-1+100-1+1000-1£©
=3$\frac{1}{5}$+1110-3
=1110$\frac{1}{5}$

¢Ú13$\frac{4}{11}$-£¨2$\frac{2}{3}$-1$\frac{7}{11}$£©
=13$\frac{4}{11}$-2$\frac{2}{3}$+1$\frac{7}{11}$
=£¨13$\frac{4}{11}$+1$\frac{7}{11}$£©-2$\frac{2}{3}$
=15-2$\frac{2}{3}$
=12$\frac{1}{3}$

¢Û2000¡Á$\frac{2000}{2001}$
=£¨2001-1£©¡Á$\frac{2000}{2001}$
=2001¡Á$\frac{2000}{2001}$-$\frac{2000}{2001}$
=2000-$\frac{2000}{2001}$
=1999$\frac{1}{2001}$

¢Ü2+5+8+11+¡­+59
=£¨2+59£©¡Á[£¨59-2£©¡Â3+1]¡Â2
=61¡Á20¡Â2
=610

¢Ý£¨$\frac{5}{6}$+$\frac{7}{4}$+$\frac{5}{12}$£©¡Â$\frac{1}{24}$
=£¨$\frac{5}{6}$+$\frac{7}{4}$+$\frac{5}{12}$£©¡Á24
=$\frac{5}{6}$¡Á24+$\frac{7}{4}$¡Á24+$\frac{5}{12}$¡Á24
=20+42+10
=72

¢Þ1$\frac{6}{7}$¡Á3.6+3$\frac{3}{5}$¡Á7$\frac{1}{7}$+3.6
=1$\frac{6}{7}$¡Á3.6+3.6¡Á7$\frac{1}{7}$+3.6
=£¨1$\frac{6}{7}$+7$\frac{1}{7}$+1£©¡Á3.6
=10¡Á3.6
=36

µãÆÀ ´ËÌâÖ÷Òª¿¼²é·ÖÊýµÄËÄÔò»ìºÏÔËË㣬עÒâÓ¦ÓÃÔËË㶨ÂɺÍÔËËã¼¼ÇɽøÐмò±ã¼ÆË㣮