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1. 直接写出得数。(9分)
$24÷\frac{6}{5}=$
$4.6×\frac{44}{23}=$
$4×\frac{1}{4}+\frac{5}{7}=$
$\frac{7}{10}÷2.5=$
$0.4-\frac{1}{5}=$
$3.6×(\frac{1}{9}+\frac{1}{12})=$
$\frac{11}{10}÷0.1=$
$\frac{5}{4}+\frac{1}{2}=$
$54-54×\frac{1}{6}=$
$24÷\frac{6}{5}=$
$4.6×\frac{44}{23}=$
$4×\frac{1}{4}+\frac{5}{7}=$
$\frac{7}{10}÷2.5=$
$0.4-\frac{1}{5}=$
$3.6×(\frac{1}{9}+\frac{1}{12})=$
$\frac{11}{10}÷0.1=$
$\frac{5}{4}+\frac{1}{2}=$
$54-54×\frac{1}{6}=$
答案
1. 20 8.8 $1\frac{5}{7}$ $\frac{7}{25}$ 0.2 0.7 11 $\frac{7}{4}$ 45
2. 计算下面各题,能简算的要简算。(12 分)
$4÷\frac{4}{9}-\frac{4}{9}÷4$
$12.8÷[0.5×(36.4-20.4)]$
$(0.75+0.75×9)÷\frac{15}{16}$
$\frac{9}{13}×(13+\frac{1}{9})×9$
$4÷\frac{4}{9}-\frac{4}{9}÷4$
$12.8÷[0.5×(36.4-20.4)]$
$(0.75+0.75×9)÷\frac{15}{16}$
$\frac{9}{13}×(13+\frac{1}{9})×9$
答案
2. $8\frac{8}{9}$ 1.6 8 $81\frac{9}{13}$
3. 看图列式计算。(6分)
(1)
(2)
(1)
(2)
答案
3. (1) $180×(1-\frac{3}{5})=72$(米)
(2) $300×(1+\frac{1}{4})=375$(棵)
(2) $300×(1+\frac{1}{4})=375$(棵)
1. 先在括号里填计算结果，再列出综合算式。
$\frac{2}{3} - \frac{1}{15} = \blacksquare$
$\frac{3}{8} ÷ \blacksquare = \bullet$
$\bullet × \frac{16}{15} = (\quad)$
综合算式：
$\frac{2}{3} - \frac{1}{15} = \blacksquare$
$\frac{3}{8} ÷ \blacksquare = \bullet$
$\bullet × \frac{16}{15} = (\quad)$
综合算式：
答案
1. $\frac{2}{3}$ $\frac{3}{8}÷(\frac{2}{3}-\frac{1}{15})×\frac{16}{15}=\frac{2}{3}$
