This hard worksheet pushes first graders into multi-step counting reasoning. Part A's four multiple-choice items include finding the missing number in 95, 96, ___, 98, 99, computing 10 more than 108, identifying what comes right before 100, and continuing 100, 105, 110, ___ counting by fives. Part B's five fill-in-blank questions cover 10 less than 120, the next number when counting backward 104, 103, 102, ___, the missing term in 89, ___, 91, 92, and the number between 76 and 78. A genuine challenge that mixes forward, backward, and skip counting in the 76-to-120 range.