数一数类型练习题及答案

                                                                               

一、
                   
                    计算题。 ( 共7题)
                  
                 

                   
                   
                     
                       
                     
                     
                       
                     
                   

1. 数数看，图中平面图形的交点数、小线段数和小区域数各是多少？并计算计算，交点数-小线段数+小区域数=？，和我们学过的结论相符么？

答:
                       

                   
                   
                     
                       
                     
                     
                       
                     
                   

2. 数一数有多少条线段?

答:
                       

                   
                   
                     
                       
                     
                     
                       
                     
                   

3. 数一数共有多少个角?

答:
                       

                   
                   
                     
                       
                     
                     
                       
                     
                   

4. 数一数，下面图形有几个正方形? 【分析】按照一定的顺序，即不能重复也不要漏掉哦!你数对了吗? 先数单个正方形，再数合起来的，就可以数出来了。一共有4个小正方形，一个大正方形。

答:
                       

                   
                   
                     
                       
                     
                     
                       
                     
                   

5. 数一数：图中共有多少个立方块? 【小结】在最上面立方块的下面还有一个立方块，不要忘记哦。

答:
                       

                   
                   
                     
                       
                     
                     
                       
                     
                   

6. 下面的图形一共有多少个正方形?

答:
                       

                   
                   
                     
                       
                     
                     
                       
                     
                   

7. 一个跳棋盘，请你数一数，这个跳棋盘上共有多少个棋孔?

 

答:
                       

                   
                 

             
             
               
                 
               
               
                 

二、
                   
                    简答题。 ( 共2题)
                  
                 

                   
                   
                     
                       
                     
                     
                       
                     
                   

1. 如果给这个大正方体的外面全部图上红色，有( )个小正方体一面也没有被涂上颜色。

答:
                       

                   
                   
                     
                       
                     
                     
                       

2.    

  

答: