Grade 1 Math: Addition and Subtraction 4

Complete the following problems in one minute:

  2       5       8       3       4    
+ 4     + 9     + 3     + 5     + 7
___     ___     ___     ___     ___






  6       1       9       4       8    
+ 2     + 6     + 8     + 9     + 4
___     ___     ___     ___     ___






  2       7       6       5       3    
+ 3     + 7     + 5     + 2     + 8
___     ___     ___     ___     ___






  9       5       7       4       2    
+ 6     + 7     + 3     + 4     + 8
___     ___     ___     ___     ___






  6       8       3       9       6    
+ 9     + 5     + 1     + 2     + 9
___     ___     ___     ___     ___