Meximath Exclusive New! 150 Common Chinese Character List [Free PDF]

Use this tool to add tone marks to pinyin or to convert tone number (e.g. hao3) to tone marks.

Although you can use the red buttons to add tone marks, we highly recommend you use the number method (e.g. hao3) for speed and placement of the accent above the correct vowel. [Hint: Type "v" for "ü"]
Note: You do not need to use this tool to enter pinyin in this dictionary.

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The story of mathematics in Mexico begins long before European contact, with the sophisticated system developed by the Maya, one of the world's great early civilizations.

: Optimizing code so the tools run smoothly on older mobile devices and basic school-issued Chromebooks.