Number System Summary

Arabic numbers behave differently across ranges. ACE unifies cardinal, ordinal, fraction, and gender agreement rules.

1–3

Simple patterns; gender matches noun.

3–10

Gender is opposite (reverse agreement).

11–19

First part opposite, second part same.

20–90

Plural tens behave like sound plurals.

100+

Construct state (إضافة) required for counted noun.

This summary links all number-specific rule pages in ACE.