3 digit - 1 digit
750-1
What is 749?
769-12
What is 757?
100-100
What is 0?
144+84
What is 228?
101+101
What is 202?
600-9
What is 591?
624-30
What is 594?
532-234
What is 298?
421+78
What is 499?
799+101
What is 900?
363-7
What is 356?
898-99
What is 799?
968-419
What is 549?
579+89
What is 668?
749+97
What is 846?
480-9
What is 471?
676-87
What is 589?
300-199
What is 101?
433+79
What is 512?
887+795
What is 1682?
950-7
What is 943?
120-49
What is 71?
874-697
What is 177?
899+79
What is 978?
989+976
What is 1965?