Subtraction With Regrouping Worksheets for Kids - SplashLearn Subtraction With Regrouping Worksheets for Kids. Practice to subtract within 100, 1000 and 10000 by solving these subtraction with regrouping worksheets for kids. These worksheets will help your child practice subtraction techniques with 2, 3 and 4-digit numbers with regrouping. Download them to add fun to your math practice now!