《2025年桂壮红皮书暑假天地河北少年儿童出版社三年级数学冀教版》

一、看图列式计算
1.
()(

3

)​+()(

4

)​=(

1

)
2.
(

1

)(

4

)​+(

2

)(

4

)​=(

3

)(

4

)​
3.
(

1

)(

6

)​+(

4

)(

6

)​=(

5

)(

6

)​
4.
(

5

)(

9

)​+(

3

)(

9

)​=(

8

)(

9

)​

答案： 1. $\frac{3}{4}$ $\frac{1}{4}$ 1 2. $\frac{1}{4}$ $\frac{2}{4}$ $\frac{3}{4}$
3. $\frac{1}{6}$ $\frac{4}{6}$ $\frac{5}{6}$ 4. $\frac{5}{9}$ $\frac{3}{9}$ $\frac{8}{9}$

二、算一算
$\frac {6}{7}-\frac {4}{7}=$$\frac{2}{7}$ $\frac {2}{8}+\frac {5}{8}=$$\frac{7}{8}$ $\frac {3}{5}-\frac {2}{5}=$$\frac{1}{5}$
$1-\frac {5}{6}=$$\frac{1}{6}$ $\frac {1}{9}+\frac {4}{9}=$$\frac{5}{9}$ $\frac {4}{7}+\frac {3}{7}=$1
$\frac {9}{10}-\frac {8}{10}=$$\frac{1}{10}$ $\frac {2}{4}+\frac {1}{4}=$$\frac{3}{4}$ $\frac {7}{8}-\frac {1}{8}=$$\frac{6}{8}$

答案： $\frac{2}{7}$ $\frac{7}{8}$ $\frac{1}{5}$ $\frac{1}{6}$ $\frac{5}{9}$ 1 $\frac{1}{10}$ $\frac{3}{4}$ $\frac{6}{8}$

三、在下面的$\boxed{ }$里填上“＞”“＜”或“＝”
$1-\frac {2}{7}$$\boxed{=}$$\frac {4}{7}+\frac {1}{7}$ $\frac {3}{8}+\frac {5}{8}$$\boxed{=}$$\frac {2}{9}+\frac {7}{9}$ $\frac {2}{9}+\frac {5}{9}$$\boxed{＜}$1
$\frac {4}{5}+\frac {1}{5}$$\boxed{＞}$$\frac {5}{6}-\frac {4}{6}$ $\frac {5}{8}$$\boxed{＞}$$\frac {7}{8}-\frac {4}{8}$ $1-\frac {3}{7}$$\boxed{＜}$$\frac {2}{7}+\frac {4}{7}$

答案： = = ＜ ＞ ＞ ＜

1. 中秋节那天,明明吃了一块月饼的$\frac {1}{3}$,还剩这块月饼的几分之几?

答案： $1-\frac{1}{3}=\frac{2}{3}$