2025年跳跳熊预习日日清六年级数学下册人教版
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二、脱式计算。(能简算的要简算)
$\frac{1}{8} \times [(2 - \frac{7}{8} - \frac{1}{8}) \times 8]$ $18 \div (\frac{3}{4} - \frac{3}{8} - \frac{1}{3})$ $2022 \times \frac{2020}{2021}$
$\frac{9}{20} \div [\frac{1}{2} \times (\frac{4}{5} + \frac{2}{5})]$ $20 - 4.4 \div \frac{4}{9} + 4.4 \times \frac{9}{4}$ $9 \times (\frac{4}{9} + \frac{1}{23}) + \frac{14}{23}$
$(\frac{4}{5} + 0.25) \div \frac{7}{3} + \frac{7}{10}$ $[\frac{3}{4} - 0 \div (\frac{1}{7} + \frac{7}{15})] \div \frac{3}{5}$
$\frac{1}{8} \times [(2 - \frac{7}{8} - \frac{1}{8}) \times 8]$ $18 \div (\frac{3}{4} - \frac{3}{8} - \frac{1}{3})$ $2022 \times \frac{2020}{2021}$
$\frac{9}{20} \div [\frac{1}{2} \times (\frac{4}{5} + \frac{2}{5})]$ $20 - 4.4 \div \frac{4}{9} + 4.4 \times \frac{9}{4}$ $9 \times (\frac{4}{9} + \frac{1}{23}) + \frac{14}{23}$
$(\frac{4}{5} + 0.25) \div \frac{7}{3} + \frac{7}{10}$ $[\frac{3}{4} - 0 \div (\frac{1}{7} + \frac{7}{15})] \div \frac{3}{5}$
答案:
1 432 $2020\frac{2020}{2021}$ $\frac{3}{4}$ 20 5 $\frac{23}{20}$ $\frac{5}{4}$
三、解方程。
$3 \times (x - 2) = 3.6$ $\frac{2}{5}x + \frac{1}{5}x = 3$ $\frac{3}{2}x - \frac{2}{3}x = 1 \div \frac{3}{2} \times \frac{2}{3}$
$\frac{x}{3} = \frac{7.2}{6}$ $\frac{x}{2.5} = \frac{48}{15}$ $\frac{1}{18}:\frac{2}{9} = x:\frac{6}{13}$
$3 \times (x - 2) = 3.6$ $\frac{2}{5}x + \frac{1}{5}x = 3$ $\frac{3}{2}x - \frac{2}{3}x = 1 \div \frac{3}{2} \times \frac{2}{3}$
$\frac{x}{3} = \frac{7.2}{6}$ $\frac{x}{2.5} = \frac{48}{15}$ $\frac{1}{18}:\frac{2}{9} = x:\frac{6}{13}$
答案:
$x = 3.2$ $x = 5$ $x = \frac{8}{15}$ $x = 3.6$ $x = 8$ $x = \frac{3}{26}$
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