A variable is a letter that acts as a number. For example, x is the most common variable. You might see an equation y = 2x + 3 . The variables in this are x and y.
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The first numeral to the right of the decimal is the tenths' place.
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What is the decimal numeral for ten and twelve
If by "fraction", you mean a number, it already is a fraction. If by "fraction" you mean a "numerator-over-denominator" numeral, 0.4 has the same value as the 4/10 numeral and anything equivalent to that. It is enough to know that the value of the first place to the right of the decimal point is tenths (or "dimes") .... and the next place to the right has place-value as hundredths (or "cents") ... so that 0.47 means 4dimes+7cents ~ 47cents.
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