Mentally Add 3 Digit Numbers

In this addition worksheet, students are shown how to add two 3 digit numbers in your head mentally. There are 18 problems for the students to try to work in their head.

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Resource Details

Grade
2nd - 3rd
Subjects
Arithmetic & Pre-Algebra
1 more...
Resource Types
Fill-in-the-blank
3 more...
Usage Permissions
Fine Print: Educational Use
Included Materials - Join to Access
  • Answer Key