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Correct terminology and notation are always used, making it easy to understand what was written.
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Correct terminology and notation are usually used, making it fairly easy to understand what was written.
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Correct terminology and notation are used, but it is sometimes not easy to understand what was written.
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There is little use, or a lot of inappropriate use, of terminology and notation.
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Explanation is detailed and clear and mentions place value.
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Explanation is clear and mentions place value.
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Explanation is a little difficult to understand, but includes critical components, like place value.
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Explanation is difficult to understand and does not mention place value
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