一、口算。
$ \frac{4}{9} × 18 = $
$ 33 × \frac{2}{11} = $
$ 15 × \frac{1}{5} = $
$ 36 × \frac{3}{4} = $
$ 8 × \frac{5}{18} = $
$ \frac{3}{8} × 8 = $
$ 12 × 0.75 = $
$ \frac{3}{8} × 2 = $
$ \frac{4}{9} × 18 = $
8
$ \frac{4}{7} × 28 = $16
$ \frac{5}{6} × 24 = $20
$ 33 × \frac{2}{11} = $
6
$ 14 × \frac{4}{7} = $8
$ \frac{5}{6} × 18 = $15
$ 15 × \frac{1}{5} = $
3
$ \frac{3}{8} × 24 = $9
$ \frac{5}{8} × 12 = $$\dfrac{15}{2}$
$ 36 × \frac{3}{4} = $
27
$ \frac{3}{11} × 3 = $$\dfrac{9}{11}$
$ \frac{11}{15} × 5 = $$\dfrac{11}{3}$
$ 8 × \frac{5}{18} = $
$\dfrac{20}{9}$
$ \frac{9}{20} × 15 = $$\dfrac{27}{4}$
$ \frac{5}{7} × 49 = $35
$ \frac{3}{8} × 8 = $
3
$ \frac{5}{8} × 16 = $10
$ \frac{5}{6} × 3 = $$\dfrac{5}{2}$
$ 12 × 0.75 = $
9
$ 7 × \frac{3}{14} = $$\dfrac{3}{2}$
$ \frac{5}{28} × 7 = $$\dfrac{5}{4}$
$ \frac{3}{8} × 2 = $
$\dfrac{3}{4}$
$ \frac{1}{2} × 44 = $22
$ 7 × \frac{2}{15} = $$\dfrac{14}{15}$
答案
8 16 20
6 8 15
3 9 $\dfrac{15}{2}$
27 $\dfrac{9}{11}$ $\dfrac{11}{3}$
$\dfrac{20}{9}$ $\dfrac{27}{4}$ 35
3 10 $\dfrac{5}{2}$
9 $\dfrac{3}{2}$ $\dfrac{5}{4}$
$\dfrac{3}{4}$ 22 $\dfrac{14}{15}$
6 8 15
3 9 $\dfrac{15}{2}$
27 $\dfrac{9}{11}$ $\dfrac{11}{3}$
$\dfrac{20}{9}$ $\dfrac{27}{4}$ 35
3 10 $\dfrac{5}{2}$
9 $\dfrac{3}{2}$ $\dfrac{5}{4}$
$\dfrac{3}{4}$ 22 $\dfrac{14}{15}$
二、你能先填一填,再列式计算吗?
1.

求 24 米的 $\frac{(
2.

求 24 米的 $\frac{(
1.
求 24 米的 $\frac{(
$\dfrac{1}{3}$
)}{($$)}$,可以列式为$($24
$) × \frac{($1
$)}{($3
$)} = ($8
$)$(米)。2.
求 24 米的 $\frac{(
$\dfrac{5}{6}$
)}{($$)}$,可以列式为$($24
$) × \frac{($5
$)}{($6
$)} = ($20
$)$(米)。答案
1. $\dfrac{1}{3}$ 24 $\dfrac{1}{3}$ 8
2. $\dfrac{5}{6}$ 24 $\dfrac{5}{6}$ 20
2. $\dfrac{5}{6}$ 24 $\dfrac{5}{6}$ 20
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