The expression is 
Place value chart for 46 and 16.
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Line up the decimal points and draw a line above the numbers.
\Annex zero to align the numbers.
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Next find the difference of the tenths digit.
\The difference of the tenths digit =.6-6=0
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Next find the difference of the ones digit.
\The difference of the ones digit =
.

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The difference is 30.
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