Have your primary students practice their 100s math charts with 30 different number grid puzzles. Also included are 13 different blank math number grid puzzles so you can customize and differentiate. Practice 10 more and 10 less with the hundreds chart and number sequencing. Have your primary students practice numbers up to 1,000 with this hundred puzzles.These NO PREP worksheets would be great for morning work, homework, math centers, assessments, small group reteaching, RTI, and special edu