Normal Difficulty
What is 89-16?
73
190
What is 888-333?
555
What is 111-20?
91
What is 255 - 106?
149
What is 456-433?
23
What is 165 - 88
77
What is 400-100?
300
What is 976 - 136
840
What is 100-99?
1
What is 344 - 77?
267
1,089 - 456?
633
What is 188-85?
103
What is 800-255?
545
what is 1458 - 433?
1025