Addition boxes

This task is about inserting numbers to complete equations.

Question 1Change answer


Complete each equation by filling in the boxes. Use only the numbers above.
Each number can be used more than once. 
a)   3  +   +   =  9
 
b)  7  +    +  2  =  15
 
c)    +  8  +    =  20
 
d)    +  5  +    =  20