- Math
- Proportions
- Age 9-14
-
level: 6
- English
คำแนะนำของผู้เขียน
Last of a set of 3 - Learning how to solve proportions by the cross-method
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คำแนะนำของผู้เขียน
Last of a set of 3 - Learning how to solve proportions by the cross-method