2025年跳跳熊预习日日清六年级数学下册人教版
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1. 求比值。
120:30 = 12.5:1.25 = 2.4:1.2 = 0.16:0.8 =
$\frac{1}{2}:\frac{3}{5}=$ $\frac{1}{2}:\frac{4}{7}=$ 4.5:$\frac{1}{2}=$ $\frac{3}{4}:9 =$
$\frac{2}{5}:\frac{1}{3}=$ $0.5:\frac{4}{5}=$ 30:$\frac{6}{5}=$ 26:$\frac{13}{27}=$
$0.8:\frac{4}{10}=$ $\frac{2}{5}:1.6 =$ $\frac{3}{4}:8 =$ $\frac{3}{10}:0.6 =$
120:30 = 12.5:1.25 = 2.4:1.2 = 0.16:0.8 =
$\frac{1}{2}:\frac{3}{5}=$ $\frac{1}{2}:\frac{4}{7}=$ 4.5:$\frac{1}{2}=$ $\frac{3}{4}:9 =$
$\frac{2}{5}:\frac{1}{3}=$ $0.5:\frac{4}{5}=$ 30:$\frac{6}{5}=$ 26:$\frac{13}{27}=$
$0.8:\frac{4}{10}=$ $\frac{2}{5}:1.6 =$ $\frac{3}{4}:8 =$ $\frac{3}{10}:0.6 =$
答案:
4 10 2 0.2
$\frac{5}{6}$ $\frac{7}{8}$ 9 $\frac{1}{12}$
$\frac{6}{5}$ $\frac{5}{8}$ 25 54
2 $\frac{1}{4}$ $\frac{3}{32}$ $\frac{1}{2}$
$\frac{5}{6}$ $\frac{7}{8}$ 9 $\frac{1}{12}$
$\frac{6}{5}$ $\frac{5}{8}$ 25 54
2 $\frac{1}{4}$ $\frac{3}{32}$ $\frac{1}{2}$
2. 解下列比例。
①$\frac{5}{0.3}=\frac{25}{x}$ ②$2:\frac{1}{4}=x:20\%$ ③$\frac{x}{25}=1.2:75$
④$\frac{1}{6}:x=\frac{1}{3}:\frac{3}{5}$ ⑤$\frac{3}{5}:x=\frac{1}{3}:2.5$ ⑥$\frac{x}{1.5}=\frac{2.4}{7.5}$
⑦$0.4:x=(1 + \frac{1}{7}):\frac{5}{7}$ ⑧$\frac{3}{5}:(x - 0.5)=16:10$
①$\frac{5}{0.3}=\frac{25}{x}$ ②$2:\frac{1}{4}=x:20\%$ ③$\frac{x}{25}=1.2:75$
④$\frac{1}{6}:x=\frac{1}{3}:\frac{3}{5}$ ⑤$\frac{3}{5}:x=\frac{1}{3}:2.5$ ⑥$\frac{x}{1.5}=\frac{2.4}{7.5}$
⑦$0.4:x=(1 + \frac{1}{7}):\frac{5}{7}$ ⑧$\frac{3}{5}:(x - 0.5)=16:10$
答案:
①$x = 1.5$ ②$x = \frac{8}{5}$ ③$x = 0.4$
④$x = \frac{3}{10}$ ⑤$x = 4.5$ ⑥$x = 0.48$
⑦$x = \frac{1}{4}$ ⑧$x = \frac{7}{8}$
④$x = \frac{3}{10}$ ⑤$x = 4.5$ ⑥$x = 0.48$
⑦$x = \frac{1}{4}$ ⑧$x = \frac{7}{8}$
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