Teach gifted kids grade 4 math with critical thinking number tiles. This 4th-grade math enrichment puzzle workbook includes multi-digit addition and subtraction problems that require regrouping. Students can also review place value concepts in the base-ten system as they practice rounding whole numbers. To solve these logic puzzles, gifted kids fill in the missing pieces with number tiles. Each digit square (0, 1, 2, 3, 4, 5, 6, 7, 8, and 9) will...