3263 的百位近似值是 (a)  

3263 的千位近似值是 (a)  

2315 + 4532 =

(a)  

9752 - 7351 =

(a)  

56 x 8 =

(a)  

746 x 4 =

(a)  

741 x 6 =

(a)  

745 x 2 =

(a)  

193 x 4 =

(a)  

468 ÷ 9 =

(a)  

123 ÷ 3 =

(a)  

328 ÷ 4 =

(a)  

395 ÷ 7 =

(a)  

270 ÷ 5 =

(a)  

(a)  

(a)  

 $\frac{6}{10}$  写成最简分数

(a)  

 $\frac{4}{20}$  写成最简分数

(a)  

 $\frac{6}{18}$  写成最简分数

(a)