一、约分。
$\frac{26}{39}=$ $\frac{14}{18}=$ $\frac{48}{72}=$ $\frac{6}{15}=$
$\frac{33}{48}=$ $\frac{108}{36}=$ $\frac{10}{12}=$ $\frac{21}{35}=$
$\frac{81}{36}=$ $\frac{16}{28}=$ $\frac{75}{45}=$ $\frac{6}{30}=$
$\frac{24}{72}=$ $\frac{39}{91}=$ $\frac{80}{48}=$ $\frac{75}{125}=$
$\frac{18}{12}=$ $\frac{36}{54}=$ $\frac{58}{92}=$ $\frac{32}{40}=$
$\frac{175}{75}=$ $\frac{57}{19}=$ $\frac{13}{91}=$ $\frac{20}{36}=$
$\frac{80}{32}=$ $\frac{125}{120}=$ $\frac{39}{52}=$ $\frac{140}{28}=$
$\frac{24}{27}=$ $\frac{16}{56}=$ $\frac{60}{15}=$ $\frac{12}{21}=$
$\frac{34}{51}=$ $\frac{25}{120}=$ $\frac{105}{45}=$ $\frac{110}{99}=$
$\frac{8}{12}=$ $\frac{87}{27}=$ $\frac{33}{66}=$ $\frac{15}{48}=$
$\frac{26}{39}=$ $\frac{14}{18}=$ $\frac{48}{72}=$ $\frac{6}{15}=$
$\frac{33}{48}=$ $\frac{108}{36}=$ $\frac{10}{12}=$ $\frac{21}{35}=$
$\frac{81}{36}=$ $\frac{16}{28}=$ $\frac{75}{45}=$ $\frac{6}{30}=$
$\frac{24}{72}=$ $\frac{39}{91}=$ $\frac{80}{48}=$ $\frac{75}{125}=$
$\frac{18}{12}=$ $\frac{36}{54}=$ $\frac{58}{92}=$ $\frac{32}{40}=$
$\frac{175}{75}=$ $\frac{57}{19}=$ $\frac{13}{91}=$ $\frac{20}{36}=$
$\frac{80}{32}=$ $\frac{125}{120}=$ $\frac{39}{52}=$ $\frac{140}{28}=$
$\frac{24}{27}=$ $\frac{16}{56}=$ $\frac{60}{15}=$ $\frac{12}{21}=$
$\frac{34}{51}=$ $\frac{25}{120}=$ $\frac{105}{45}=$ $\frac{110}{99}=$
$\frac{8}{12}=$ $\frac{87}{27}=$ $\frac{33}{66}=$ $\frac{15}{48}=$
答案
一、$\frac{2}{3}$ $\frac{7}{9}$ $\frac{2}{3}$ $\frac{2}{5}$
$\frac{11}{16}$ 3 $\frac{5}{6}$ $\frac{3}{5}$
$\frac{9}{4}$ $\frac{4}{7}$ $\frac{5}{3}$ $\frac{1}{5}$
$\frac{1}{3}$ $\frac{3}{7}$ $\frac{5}{3}$ $\frac{3}{5}$
$\frac{3}{2}$ $\frac{2}{3}$ $\frac{29}{46}$ $\frac{4}{5}$
$\frac{7}{3}$ 3 $\frac{1}{7}$ $\frac{5}{9}$
$\frac{5}{2}$ $\frac{25}{24}$ $\frac{3}{4}$ 5
$\frac{8}{9}$ $\frac{2}{7}$ 4 $\frac{4}{7}$
$\frac{2}{3}$ $\frac{5}{24}$ $\frac{7}{3}$ $\frac{10}{9}$
$\frac{2}{3}$ $\frac{29}{9}$ $\frac{1}{2}$ $\frac{5}{16}$
$\frac{11}{16}$ 3 $\frac{5}{6}$ $\frac{3}{5}$
$\frac{9}{4}$ $\frac{4}{7}$ $\frac{5}{3}$ $\frac{1}{5}$
$\frac{1}{3}$ $\frac{3}{7}$ $\frac{5}{3}$ $\frac{3}{5}$
$\frac{3}{2}$ $\frac{2}{3}$ $\frac{29}{46}$ $\frac{4}{5}$
$\frac{7}{3}$ 3 $\frac{1}{7}$ $\frac{5}{9}$
$\frac{5}{2}$ $\frac{25}{24}$ $\frac{3}{4}$ 5
$\frac{8}{9}$ $\frac{2}{7}$ 4 $\frac{4}{7}$
$\frac{2}{3}$ $\frac{5}{24}$ $\frac{7}{3}$ $\frac{10}{9}$
$\frac{2}{3}$ $\frac{29}{9}$ $\frac{1}{2}$ $\frac{5}{16}$
二、计算下面各题,怎样简便就怎样计算。
$2.46\times1.1 - 1.71 - 0.29$ $0.75\times18\div0.15 - 6.8$ $[1.5+(48 - 450\div18)]\times0.4$
$12.6 + 3.24\times3 - 15.88$ $(6 - 7.35\div2.1)\times3.6$ $(24.5 - 1.1)\div0.18 - 29$
$4.57 + 3.17 + 3.43 + 5.83$ $37.8\times27 - 7.8\times27$ $83.7\times0.2 + 8.37\times7 + 8.37$
$4.27\div0.7\times(1.3 + 0.8)$ $8\times4.6 + 3.5\times8 + 4.4\times8$ $4.7\times(0.19 + 2.08\div2.6)$
$(22.6 + 54.4\div8.5)\times0.6$ $6.5 + 0.38\times5.2 - 3.98$ $2.8\div[(7.3 - 4.5)\times0.4]$
$0.65\times(4 - 3.64)\div0.02$ $1.1\times0.6 - 0.6$ $9.9\times8.6 + 86\times0.01$
$2.46\times1.1 - 1.71 - 0.29$ $0.75\times18\div0.15 - 6.8$ $[1.5+(48 - 450\div18)]\times0.4$
$12.6 + 3.24\times3 - 15.88$ $(6 - 7.35\div2.1)\times3.6$ $(24.5 - 1.1)\div0.18 - 29$
$4.57 + 3.17 + 3.43 + 5.83$ $37.8\times27 - 7.8\times27$ $83.7\times0.2 + 8.37\times7 + 8.37$
$4.27\div0.7\times(1.3 + 0.8)$ $8\times4.6 + 3.5\times8 + 4.4\times8$ $4.7\times(0.19 + 2.08\div2.6)$
$(22.6 + 54.4\div8.5)\times0.6$ $6.5 + 0.38\times5.2 - 3.98$ $2.8\div[(7.3 - 4.5)\times0.4]$
$0.65\times(4 - 3.64)\div0.02$ $1.1\times0.6 - 0.6$ $9.9\times8.6 + 86\times0.01$
答案
二、0.706 83.2 9.8
6.44 9 101
17 810 83.7
12.81 100 4.653
17.4 4.496 2.5
11.7 0.06 86
6.44 9 101
17 810 83.7
12.81 100 4.653
17.4 4.496 2.5
11.7 0.06 86
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