FREE Mixed Addition and Subtraction Within 100,000 With Regrouping | 5-Digit Addition and SubtractionThis free worksheet is taken from Level 1 of the full resource, Mixed Addition and Subtraction Within 100,000 With Regrouping | 5-Digit Addition and Subtraction. These worksheets focus on addition and subtraction within 100,000 with regrouping, helping students improve their fluency and confidence in adding and subtracting numbers up to 5 digits. The problems gradually increase in difficulty th