PlaceValue.net
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Place Value of 9 in 42.439

Decimal place value starts at the decimal point and moves to the right. The first digit is tenths, the second is hundredths, and the third is thousandths.

Always start counting from the decimal point → right side only
Answer
In 42.439, the digit 9 is in the Thousandths place.
Its value is 0.009.
How we find it
1) Find the decimal point.
2) Count digits to the right until you reach 9.
3) That position gives the place name.
4) Write the value using zeros.
Decimal place value chart
DigitPlace
4 Tenths
3 Hundredths
9 Thousandths
Try your own decimal number
More decimal practice
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Hint: Count from the decimal point to the right.