Related addition and subtraction

Choose the related ADDITION fact.

 $13\ +\ 2\ =\ 15$  

• 13 - 2 = 11

• 2 + 13 = 15

• 15 - 2 = 13

Choose the related ADDITION fact.

 $10\ -\ 8\ =\ 2$  

•  $2\ +\ 10\ =\ 12$  

•  $2\ +\ 8\ =\ 10$  

•  $8\ -\ 2\ =\ 10$  

Choose the related SUBTRACTION fact.

 $6\ +\ 7\ =\ 13$  

•  $13\ -\ 3\ =\ 10$  

•  $7\ +\ 6\ =\ 13$  

•  $13\ -\ 7\ =\ 6$  

Write the missing number.

 $8\ +\ 9\ =\ ?$   $?\ -\ 9\ =\ 8$  

 $12\ -\ 6\ =$ 

 $16\ -\ 9\ =$  

 $12\ -\ 3\ =$  

 $18\ -\ 0\ =$  

 $5\ +\ 6\ +\ 2\ =\$  

 $4\ +\ 3\ +\ 5\ =\$