一、口算。
$2727÷27=$
$70\% ÷35\% =$
$9.45 - 0.5 =$
$\frac {4}{5}-\frac {3}{10}=$
$400×40\% =$
$48\% ÷\frac {12}{13}=$
$1.35 + 0.5 =$
$8.2 + 2.8 =$
$86.4÷3=$
$\frac {7}{11}×33=$
$\frac {2}{3}-\frac {2}{7}=$
$\frac {3}{4}+\frac {1}{2}=$
$\frac {4}{15}÷\frac {2}{5}=$
$\frac {5}{6}×\frac {3}{5}=$
$0.65÷0.05=$
$360×5=$
$2-\frac {11}{7}=$
$\frac {2}{3}+\frac {1}{4}=$
$75\% - 25\% =$
$0.3×2.2=$
$36÷15=$
$2727÷27=$
101
$70\% ÷35\% =$
2
$9.45 - 0.5 =$
8.95
$\frac {4}{5}-\frac {3}{10}=$
$\dfrac{1}{2}$
$400×40\% =$
160
$48\% ÷\frac {12}{13}=$
$\dfrac{13}{25}$
$1.35 + 0.5 =$
1.85
$8.2 + 2.8 =$
11
$86.4÷3=$
28.8
$\frac {7}{11}×33=$
21
$\frac {2}{3}-\frac {2}{7}=$
$\dfrac{8}{21}$
$\frac {3}{4}+\frac {1}{2}=$
$\dfrac{5}{4}$
$\frac {4}{15}÷\frac {2}{5}=$
$\dfrac{2}{3}$
$\frac {5}{6}×\frac {3}{5}=$
$\dfrac{1}{2}$
$0.65÷0.05=$
13
$360×5=$
1800
$2-\frac {11}{7}=$
$\dfrac{3}{7}$
$\frac {2}{3}+\frac {1}{4}=$
$\dfrac{11}{12}$
$75\% - 25\% =$
50%
$0.3×2.2=$
0.66
$36÷15=$
2.4
答案
一、101 2 8.95
$\dfrac{1}{2}$ 160 $\dfrac{13}{25}$
1.85 11 28.8
21 $\dfrac{8}{21}$ $\dfrac{5}{4}$
$\dfrac{2}{3}$ $\dfrac{1}{2}$ 13
1800 $\dfrac{3}{7}$ $\dfrac{11}{12}$
50% 0.66 2.4
$\dfrac{1}{2}$ 160 $\dfrac{13}{25}$
1.85 11 28.8
21 $\dfrac{8}{21}$ $\dfrac{5}{4}$
$\dfrac{2}{3}$ $\dfrac{1}{2}$ 13
1800 $\dfrac{3}{7}$ $\dfrac{11}{12}$
50% 0.66 2.4
二、解比例。
$1.5:0.4 = x:1.6$
$\frac {x}{16}=\frac {11}{4}$
$8:x=\frac {1}{3}:\frac {1}{4}$
$0.35:0.27 = 10:x$
$0.99:7.2 = x:16$
$\frac {1}{9}:\frac {1}{27}=x:\frac {3}{8}$
$1.5:0.4 = x:1.6$
$\frac {x}{16}=\frac {11}{4}$
$8:x=\frac {1}{3}:\frac {1}{4}$
$0.35:0.27 = 10:x$
$0.99:7.2 = x:16$
$\frac {1}{9}:\frac {1}{27}=x:\frac {3}{8}$
答案
二、$x=6$ $x=44$ $x=6$
$x=\dfrac{54}{7}$ $x=2.2$ $x=\dfrac{9}{8}$
$x=\dfrac{54}{7}$ $x=2.2$ $x=\dfrac{9}{8}$
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