Why the Zeros After the Point Matter
1.009 begins with 2 decimal-place placeholders before its first nonzero digit. Omitting one would move that digit left and create a different value.
Decimal in the thousandths place
1.009 in Words
1.009 is a positive terminating decimal greater than 1. It has 3 decimal places, and its final digit is in the thousandths place.
Direct Answer
1.009 in words is one point zero zero nine.
1.009 Place-Value Breakdown
The digits 1 form the whole-number part, while 0 in the tenth place, 0 in the hundredth place, and 9 in the thousandth place.
| Part | Digit | Place | Digit value |
|---|---|---|---|
| Whole part | 1 | ones | 1 |
| Decimal part | 0 | tenth | 0/10 |
| Decimal part | 0 | hundredth | 0/100 |
| Decimal part | 9 | thousandth | 9/1000 |
What Kind of Decimal Is 1.009?
1.009 is a positive terminating decimal greater than 1. It is written to the thousandths place.
Leading-zero pattern: 2 placeholder zeros appear before the first nonzero decimal digit. Those zeros determine the final place value.
Expanded Form of 1.009
1.009 = 1 + 9/1000
1.009 = 1 9/1000
The final nonzero digit is in the thousandths place, so its value is expressed with a denominator of 1000.
Why 1009/1000 Is Already in Lowest Terms
There are 3 decimal places, so the exact fraction is 1009/1000.
The greatest common divisor of its numerator and denominator is 1, so the fraction cannot be reduced further.
As a mixed fraction, the value is 1 9/1000.
1.009 as a Percentage
To convert 1.009 to a percentage, multiply it by 100.
1.009 × 100 = 100.9
Therefore, 1.009 = 100.9%.
Decimals Equivalent to 1.009
1.009 = 1.0090 = 1.00900
Adding zeros to the right of a decimal does not change its numerical value. It does change the number of written decimal places and may communicate different precision.
| Decimal | Final place | Exact fraction | Simplified value |
|---|---|---|---|
| 1.009 | thousandths | 1009/1000 | 1009/1000 |
| 1.0090 | ten-thousandths | 10090/10000 | 1009/1000 |
| 1.00900 | hundred-thousandths | 100900/100000 | 1009/1000 |
Whole Part and Fractional Part
This mixed decimal combines the whole part 1 with the fractional part 9/1000. In place-value words, "and" marks that boundary.
1.009 on a Number Line
1.009 lies between 1 and 2. It is 0.991 below 2 and 0.009 above 1.
11.0092
1.009 Compared with Similar Decimals
| Decimal | Spoken form | Place-value form | Fraction | Percentage | Relationship |
|---|---|---|---|---|---|
| 0.1009 | zero point one zero zero nine | one thousand nine ten-thousandths | 1009/10000 | 10.09% | ten times smaller than 1.009 |
| 1.009 | one point zero zero nine | one and nine thousandths | 1009/1000 | 100.9% | current value |
| 1.0090 | one point zero zero nine zero | one and ninety ten-thousandths | 1009/1000 | 100.9% | same numerical value, written to the ten-thousandths place |
| 10.09 | ten point zero nine | ten and nine hundredths | 1009/100 | 1009% | ten times larger than 1.009 |
Quick Practice
How is 1.009 read digit by digit?
One point zero zero nine.
What is the place-value word form of 1.009?
One and nine thousandths.
What fraction is 1.009 in lowest terms?
1009/1000.
What percentage is equal to 1.009?
100.9%.
What is 1.009 as a mixed fraction?
1 9/1000.
Between which whole numbers does 1.009 lie?
Between 1 and 2.
Frequently Asked Questions
How do you write 1.009 in words?
1.009 in words is one point zero zero nine.
Why is 1.009 called one and nine thousandths?
Because the digit 9 is in the thousandths place. Therefore, 1.009 represents one and nine thousandths.
What fraction is 1.009?
1.009 is 1009/1000 exactly and 1009/1000 in lowest terms.
Is 1009/1000 already in lowest terms?
Yes. Its numerator and denominator have a greatest common divisor of 1.
What percentage is 1.009?
1.009 is equal to 100.9%.
Is 1.009 the same as 1.0090?
Yes. 1.009 and 1.0090 have the same numerical value. However, 1.009 is written to the thousandths place, while 1.0090 is written to the ten-thousandths place and may communicate greater recorded precision.
Is 1.009 larger than 0.1009?
Yes. 1.009 is ten times as large as 0.1009.
What type of decimal is 1.009?
1.009 is a positive terminating decimal greater than 1. It is written to 3 decimal places and represents one and nine thousandths.