ÌâÄ¿ÄÚÈÝ
4£®ÍÑʽ¼ÆË㣬ÄܼòËãµÄÒª¼òË㣮 $\frac{7}{9}$¡Â$\frac{11}{5}$+$\frac{2}{9}$¡Á$\frac{5}{11}$ | 1.25¡Á32¡Á0.25 | 2.3+3.91¡Â£¨22-19.7£© |
$\frac{2}{3}$+£¨ $\frac{5}{6}$-0.75 £©¡Â$\frac{3}{8}$ | 6¡Â$\frac{3}{5}$-$\frac{3}{5}$¡Â6 | 43¡Á$\frac{1}{4}$+25%¡Á58-0.25£® |
·ÖÎö £¨1£©¡¢£¨6£©ÀûÓó˷¨µÄ·ÖÅäÂɽøÐмÆË㣻
£¨2£©°Ñ32¸Äд³É4¡Á8ºóÔÙÀûÓó˷¨½áºÏÂɽøÐмÆË㣻
£¨3£©ÏÈËãСÀ¨ºÅÄÚÃæµÄ¼õ·¨£¬ÔÙËãСÀ¨ºÅÍâµÄ³ý·¨£¬×îºóËã¼Ó·¨£»
£¨4£©ÏÈËãСÀ¨ºÅÄÚÃæµÄ¼õ·¨£¬ÔÙËãСÀ¨ºÅÍâµÄ³ý·¨£¬×îºóËã¼Ó·¨£»
£¨5£©ÏÈËãµÚ¶þ¼¶ÔËË㣬ÔÙËãµÚÒ»¼¶ÔËË㣮
½â´ð ½â£º£¨1£©$\frac{7}{9}$¡Â$\frac{11}{5}$+$\frac{2}{9}$¡Á$\frac{5}{11}$
=$\frac{7}{9}$¡Á$\frac{5}{11}$+$\frac{2}{9}$¡Á$\frac{5}{11}$
=$\frac{5}{11}$¡Á£¨$\frac{7}{9}$+$\frac{2}{9}$£©
=$\frac{5}{11}$¡Á1
=$\frac{5}{11}$
£¨2£©1.25¡Á32¡Á0.25
=1.25¡Á£¨4¡Á8£©¡Á0.25
=£¨1.25¡Á8£©¡Á£¨4¡Á0.25£©
=10¡Á1
=10
£¨3£©2.3+3.91¡Â£¨22-19.7£©
=2.3+3.91¡Â2.3
=2.3+1.7
=4
£¨4£©$\frac{2}{3}$+£¨ $\frac{5}{6}$-0.75 £©¡Â$\frac{3}{8}$
=$\frac{2}{3}$$+\frac{1}{12}$$¡Â\frac{3}{8}$
=$\frac{2}{3}$+$\frac{2}{9}$
=$\frac{8}{9}$
£¨5£©6¡Â$\frac{3}{5}$-$\frac{3}{5}$¡Â6
=6¡Á$\frac{5}{3}$-$\frac{3}{5}$¡Á$\frac{1}{6}$
=10-$\frac{1}{10}$
=9$\frac{9}{10}$
£¨6£©43¡Á$\frac{1}{4}$+25%¡Á58-0.25
=43¡Á$\frac{1}{4}$+$\frac{1}{4}$¡Á58-$\frac{1}{4}$¡Á1
=$\frac{1}{4}$¡Á£¨43+58-1£©
=$\frac{1}{4}$¡Á100
=25
µãÆÀ ¿¼²éѧÉú¶ÔÓÚËÄÔòÔËËã·¨Ôò¼°ÔËË㶨ÂɵÄÕÆÎÕÇé¿ö£®