Finding Cubes Problems -- with negative numbers

-73 = ____ ?  93 = ____ ?  -33 = ____ ?       -343  729  -27 
-33 = ____ ?  63 = ____ ?  43 = ____ ?       -27  216  64 
03 = ____ ?  23 = ____ ?  63 = ____ ?       0  8  216 
-13 = ____ ?  93 = ____ ?  73 = ____ ?       -1  729  343 
-13 = ____ ?  83 = ____ ?  13 = ____ ?       -1  512  1 
33 = ____ ?  03 = ____ ?  -43 = ____ ?       27  0  -64 
43 = ____ ?  23 = ____ ?  73 = ____ ?       64  8  343 
-83 = ____ ?  -13 = ____ ?  -13 = ____ ?       -512  -1  -1 
33 = ____ ?  -13 = ____ ?  -43 = ____ ?       27  -1  -64 
73 = ____ ?  63 = ____ ?  53 = ____ ?       343  216  125 
23 = ____ ?  -13 = ____ ?  13 = ____ ?       8  -1  1 
13 = ____ ?  53 = ____ ?  -13 = ____ ?       1  125  -1 
-73 = ____ ?  -93 = ____ ?  83 = ____ ?       -343  -729  512 
-53 = ____ ?  -83 = ____ ?  -43 = ____ ?       -125  -512  -64 
-73 = ____ ?  03 = ____ ?  83 = ____ ?       -343  0  512 
-93 = ____ ?  -63 = ____ ?  -13 = ____ ?       -729  -216  -1 
03 = ____ ?  23 = ____ ?  33 = ____ ?       0  8  27 
13 = ____ ?  -63 = ____ ?  -93 = ____ ?       1  -216  -729 
-33 = ____ ?  -23 = ____ ?  -73 = ____ ?       -27  -8  -343 
-33 = ____ ?  53 = ____ ?  83 = ____ ?       -27  125  512 
13 = ____ ?  -43 = ____ ?  -43 = ____ ?       1  -64  -64 
-93 = ____ ?  23 = ____ ?  03 = ____ ?       -729  8  0 
-83 = ____ ?  -23 = ____ ?  53 = ____ ?       -512  -8  125 
-23 = ____ ?  -93 = ____ ?  73 = ____ ?       -8  -729  343 
-83 = ____ ?  -63 = ____ ?  13 = ____ ?       -512  -216  1 

Lines = 25  Problems = 75  Number Correct _____Number Wrong _____