Mathematics · Grades 4
Harbor Manifest Audit
Check a multi-digit addition with the standard algorithm by finding the regroupings a clerk missed.
Start Harbor Manifest AuditWhat children practice
- Addition Cargo Center: Add multi-digit whole numbers accurately using the standard algorithm and estimation.
How to use this activity
Invite your child to try the challenge independently first. Encourage them to explain their thinking, use the immediate feedback, and try again when an answer does not work. Short, repeated practice helps build confidence.
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