Question

17£®ÇëÄãϸÐĵؼÆËãÏÂÁи÷Ì⣮

¢Ù£¨25+$\frac{2}{3}$£©¡Á4	¢Ú$\frac{1}{5}$+$\frac{4}{5}$¡Â$\frac{4}{25}$	¢Û3-$\frac{8}{15}$¡Á$\frac{5}{16}$
¢Ü$\frac{3}{4}$+£¨$\frac{1}{5}$+$\frac{1}{3}$£©¡Á15	¢Ý$\frac{6}{7}$¡Â3¡Á$\frac{14}{15}$	¢Þ0.75-$\frac{5}{24}$¡Â0.675+$\frac{5}{6}$

Answer 1

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¢ÚÏÈËã³ý·¨£¬ÔÙËã¼Ó·¨£»
¢ÛÏÈËã³Ë·¨£¬ÔÙËã¼õ·¨£»
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½â´ð ½â£º¢Ù£¨25+$\frac{2}{3}$£©¡Á4
=25¡Á4+$\frac{2}{3}$¡Á4
=100+2$\frac{2}{3}$
=102$\frac{2}{3}$£»

¢Ú$\frac{1}{5}$+$\frac{4}{5}$¡Â$\frac{4}{25}$
=$\frac{1}{5}$+5
=5$\frac{1}{5}$£»

¢Û3-$\frac{8}{15}$¡Á$\frac{5}{16}$
=3-$\frac{1}{6}$
=2$\frac{5}{6}$£»

¢Ü$\frac{3}{4}$+£¨$\frac{1}{5}$+$\frac{1}{3}$£©¡Á15
=$\frac{3}{4}$+$\frac{8}{15}$¡Á15
=$\frac{3}{4}$+8
=8$\frac{3}{4}$£»

¢Ý$\frac{6}{7}$¡Â3¡Á$\frac{14}{15}$
=$\frac{2}{7}$¡Á$\frac{14}{15}$
=$\frac{4}{15}$£»

¢Þ0.75-$\frac{5}{24}$¡Â0.675+$\frac{5}{6}$
=0.75-$\frac{1}{3}$+$\frac{5}{6}$
=$\frac{5}{12}$+$\frac{5}{6}$
=$\frac{5}{4}$£®

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