Spring Sudoku Style Enrichment Math challenge for advanced 1st & 2nd grade students. Perfect for advanced centers, GATE, gifted & talented programs, or early finishers, these worksheets reinforce adding 3 addends to find a sum. Each worksheet includes 3 puzzles that ask students to find a missing addend needed to reach a target sum of 10, 20, 50, 100, 17, 18, 25, 32, 44, 58, 62, 75, 80, and 99. You May Also Like• Advanced Logic Puzzle Variety Pack for 1st Grade Gifted & Talented or Enrichm