2026年通城学典计算能手五年级数学下册苏教版江苏专版第55页答案
一、口算。
$ \frac { 3 } { 5 } + \frac { 1 } { 5 } = $
$\dfrac{4}{5}$
$ \frac { 5 } { 6 } - \frac { 2 } { 6 } = $
$\dfrac{1}{2}$
$ \frac { 13 } { 8 } + \frac { 4 } { 8 } = $
$\dfrac{17}{8}$

$ \frac { 8 } { 9 } - \frac { 6 } { 9 } = $
$\dfrac{2}{9}$
$ \frac { 8 } { 17 } + \frac { 12 } { 17 } = $
$\dfrac{20}{17}$
$ \frac { 13 } { 14 } - \frac { 3 } { 14 } = $
$\dfrac{5}{7}$

$ \frac { 2 } { 7 } + \frac { 1 } { 7 } = $
$\dfrac{3}{7}$
$ \frac { 17 } { 20 } - \frac { 12 } { 20 } = $
$\dfrac{1}{4}$
$ \frac { 5 } { 10 } + \frac { 2 } { 10 } = $
$\dfrac{7}{10}$

$ 0. 76 + 0. 54 = $
$1.3$
$ 2. 2 ÷ 0. 4 = $
$5.5$
$ 2. 8 × 0. 2 = $
$0.56$

$ 0. 056 ÷ 7 = $
$0.008$
$ 0. 7 - 0. 62 = $
$0.08$
$ 0. 48 ÷ 0. 008 = $
$60$

$ 0. 8 × 700 = $
$560$
$ 460 + 54 = $
$514$
$ 2. 08 - 1. 8 = $
$0.28$

$ 3. 8 + 6. 2 = $
$10$
$ 48 × 0. 6 = $
$28.8$
$ 4. 4 ÷ 0. 11 = $
$40$

$ 7. 5 ÷ 0. 15 = $
$50$
$ 2 - 0. 09 = $
$1.91$
$ 1. 73 + 3. 07 = $
$4.8$

$ 5. 2 × 4 = $
$20.8$
$ 0. 9 ÷ 4. 5 = $
$0.2$
$ 2. 3 - 1. 13 = $
$1.17$

$ 7. 5 - 2. 25 = $
$5.25$
$ 1. 5 + 0. 17 = $
$1.67$
$ 2. 05 × 6 = $
$12.3$

答案

一、$\dfrac{4}{5}$ $\dfrac{1}{2}$ $\dfrac{17}{8}$
$\dfrac{2}{9}$ $\dfrac{20}{17}$ $\dfrac{5}{7}$
$\dfrac{3}{7}$ $\dfrac{1}{4}$ $\dfrac{7}{10}$
$1.3$ $5.5$ $0.56$
$0.008$ $0.08$ $60$
$560$ $514$ $0.28$
$10$ $28.8$ $40$
$50$ $1.91$ $4.8$
$20.8$ $0.2$ $1.17$
$5.25$ $1.67$ $12.3$
二、约分。
$ \frac { 9 } { 36 } = $
$\dfrac{1}{4}$
$ \frac { 11 } { 33 } = $
$\dfrac{1}{3}$
$ \frac { 28 } { 32 } = $
$\dfrac{7}{8}$

$ \frac { 25 } { 40 } = $
$\dfrac{5}{8}$
$ \frac { 24 } { 42 } = $
$\dfrac{4}{7}$
$ \frac { 30 } { 45 } = $
$\dfrac{2}{3}$

$ \frac { 32 } { 12 } = $
$\dfrac{8}{3}$
$ \frac { 75 } { 60 } = $
$\dfrac{5}{4}$
$ \frac { 18 } { 54 } = $
$\dfrac{1}{3}$

答案

二、$\dfrac{1}{4}$ $\dfrac{1}{3}$ $\dfrac{7}{8}$
$\dfrac{5}{8}$ $\dfrac{4}{7}$ $\dfrac{2}{3}$
$\dfrac{8}{3}$ $\dfrac{5}{4}$ $\dfrac{1}{3}$