1) 6 +  _______  = 10


2) 4 +  _______  = 7


3) 5 +  _______  = 7


4) 6 +  _______  = 7


5) 7 +  _______  = 7


6) 4 +  _______  = 9


7) 5 +  _______  = 9


8) 6 +  _______  = 9


9) 7 +  _______  = 9


10) 8 +  _______  = 9

1) 6 -  _______  = 2


2) 6 -  _______  = 4


3) 6 -  _______  = 3


4) 6 -  _______  = 5


5) 6 -  _______  = 0


6) 6 -  _______  = 6


7) 6 -  _______  = 1


8) 9 -  _______  = 4


9) 9 -  _______  = 5


10) 8 -  _______  = 6