Question

10£®ÍÑʽ¼ÆË㣬ÄܼòËãµÄÒª¼òË㣮

$\frac{1}{3}$+$\frac{2}{3}$¡Á$\frac{7}{15}$	2-$\frac{1}{3}$¡Á$\frac{1}{2}$	$\frac{4}{5}$¡Á$\frac{3}{8}$¡Á$\frac{1}{9}$
$\frac{1}{5}$¡Á$\frac{3}{4}$+$\frac{1}{4}$¡Á$\frac{1}{5}$	$\frac{7}{10}$¡Á9+$\frac{7}{10}$	38¡Á$\frac{5}{37}$

Answer 1

·ÖÎö £¨1£©Ê×ÏȼÆËã³Ë·¨£¬È»ºó¼ÆËã¼Ó·¨¼´¿É£®
£¨2£©Ê×ÏȼÆËã³Ë·¨£¬È»ºó¼ÆËã¼õ·¨¼´¿É£®
£¨3£©´Ó×óÏòÓÒÒÀ´Î¼ÆËã¼´¿É£®
£¨4£©£¨5£©£¨6£©¸ù¾Ý³Ë·¨·ÖÅäÂɼÆËã¼´¿É£®

½â´ð ½â£º£¨1£©$\frac{1}{3}$+$\frac{2}{3}$¡Á$\frac{7}{15}$
=$\frac{1}{3}$+$\frac{14}{45}$
=$\frac{29}{45}$

£¨2£©2-$\frac{1}{3}$¡Á$\frac{1}{2}$
=2-$\frac{1}{6}$
=1$\frac{5}{6}$

£¨3£©$\frac{4}{5}$¡Á$\frac{3}{8}$¡Á$\frac{1}{9}$
=$\frac{3}{10}$¡Á$\frac{1}{9}$
=$\frac{1}{30}$

£¨4£©$\frac{1}{5}$¡Á$\frac{3}{4}$+$\frac{1}{4}$¡Á$\frac{1}{5}$
=$\frac{1}{5}$¡Á£¨$\frac{3}{4}$+$\frac{1}{4}$£©
=$\frac{1}{5}$¡Á1
=$\frac{1}{5}$

£¨5£©$\frac{7}{10}$¡Á9+$\frac{7}{10}$
=$\frac{7}{10}$¡Á£¨9+1£©
=$\frac{7}{10}$¡Á10
=7

£¨6£©38¡Á$\frac{5}{37}$
=£¨37+1£©¡Á$\frac{5}{37}$
=37¡Á$\frac{5}{37}$+$\frac{5}{37}$
=5+$\frac{5}{37}$
=5$\frac{5}{37}$

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