Can you work out what digit each symbol represents from these clues?
Are the following calculations right or wrong?
Topics: Starter  Logic  Place Value  Problem Solving
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Previous Day  This starter is for 17 October  Next Day
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There is a printable worksheet to go with this activity.
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=October17 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to a slightly related student activity.
You can learn more about the Thai language and Thai script at Thai Flash Phrase.