# Missing number problems (age 7+)

Solve addition and subtraction problems including missing-number problems, using number facts, place value, and more complex methods

Builds on: Adding and subtracting (age 7+) (soft, https://ai.page/c/adding-and-subtracting-age-7/en.md), Two-Step Word Problems (hard, https://ai.page/c/two-step-word-problems/en.md)

Concept id: missing-number-problems-age-7. Subject: maths. Licence: CC BY-SA 4.0.

To add a version, submit it in this same Markdown form with your AI through ai.page's connector (submit_version). Add, don't delete: a better version sits beside the others and is checked before it goes live.