             
                              
                 
                                                      
       16  
1. 9+9+9+9+9+9                               
2.7+7+7+7-3 =     ×            
3. 1m-40cm =       cm     42m +30m =        m 
4.       5              160         
5. ○○★★★★★★★★  ★ ○           
6.                                
7.                         
8. 5×8 =                              
      5  
1.       160m       
2.       15cm      
3.                  
4. 100cm   1m            
  
5.                 
            20  
6×7 =    8×3 =    5×7 =    7×5 =    4×5 =     3×9 =   8×9 =     
9×6 =     5－6 =    6－3 =    7－8 =    6×6 =     2 ×8 =
  5×5 =   
43 -21 =    35 -17 =      22 +20 =     51 -9 =     50 +40 =      62 +30 =  
      ( 15   




 68 - 54 =       18 + 59 =      90 - 24 =        36 + 47 - 8 =




78 - 50 - 42 =       45 - 12 + 30 =
       9   
1.               2.                    
                                                    

       6  
1.  7  6                2. 5   8            3.    2.
                                                   9
                                                          



                 6   
    5×       ∧27        9×        ∧41       7×        ∧17
8×       ∧22        80∨       ×9        7× 
     ∧22
              8  
     













       15  
1.            32    8     12    
          



2.     6    9       



3.   50    6       8          