ONE MINUTE TIMED DRILL - ADDING 3S ANSWER GUIDE
  

Add the two numbers to find the sum.  
    
1+3= 4 3+3= 6 8+3= 11 3+3= 6 3+3= 6 5+3= 8 0+3= 3 (7
 
8+3= 11 1+3= 4 8+3= 11  3+3= 6 6+3= 9 5+3= 8 2+3= 5 (14
 
1+3= 4 3+3= 6 1+3= 4 10+3= 13 3+5= 8 3+2= 5 3+3= 6 (21
 
6+3= 9 9+3= 12 3+3= 6 3+3= 6 10+3= 13 0+3= 3 5+3= 8 (28
 
0+3= 3 3+3= 6 10+3= 13 6+3= 9 3+3= 6 5+3= 8 3+3= 6 (35
 
6+3= 9 3+3= 6 5+3= 8 10+3= 13 3+3= 6 0+3= 3 3+3= 6 (42
 
3+3= 6 5+3= 8 1+3= 4 3+4= 7 3+7= 10 3+3= 6 3+2= 5 (49
 
3+4= 7 6+3= 9 3+7= 10 8+3= 11 9+3= 12 3+3= 6 1+3= 4 (56
 
9+3= 12 6+3= 9 5+6= 11 3+3= 6 5+3= 8 3+6= 9 8+3= 12 (63
 
8+3= 12 0+3= 3 3+3= 6 10+3= 13 10+3= 13 8+3= 11 6+3= 9 (70
 
0+3= 3 6+3= 9 1+3= 4 3+3= 6 8+3= 11 10+3= 13 9+3= 12 (77
 
0+3= 3 3+3= 6 0+3= 3 7+3= 10 1+3= 4  3+3= 6 9+3= 12 (84
 
6+3= 9 10+3= 13 5+3= 8 4+3= 7 0+3= 3  5+3= 8 9+3= 12 (91
 
8+3= 11 10+3= 13 5+3= 8 10+3= 13 10+3= 13 3+3= 6 0+3= 3 (98
 
6+3= 9 9+3= 12 1+3= 4 3+3= 6 9+3= 12 3+3= 6 0+3= 3 (105
 
(15) (30)  (45) (60) (75) (90)  (105)
 
  
  

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