your child will learn to add 4-digit and 4-digit numbers by regrouping once to add 4-digit and 4-digit numbers.
To regroup once to add 4-digit and 4-digit numbers, your child will need to analyze and select the correct answer from a set of given options.
Regrouping once to add 4-digit and 4-digit numbers will help enhance your child's addition & subtraction skills.