A Familiar Fraction Equivalent
The reduced form 21/50 is a commonly used fraction. The decimal form is convenient for calculation, while the fraction shows the exact part-to-whole relationship.
Decimal in the hundredths place
0.42 in Words
0.42 is a positive terminating decimal less than 1. It has 2 decimal places, and its final digit is in the hundredths place.
Direct Answer
0.42 in words is zero point four two.
0.42 Place-Value Breakdown
The decimal digits place 4 in the tenth place and 2 in the hundredth place.
| Part | Digit | Place | Digit value |
|---|---|---|---|
| Whole part | 0 | ones | 0 |
| Decimal part | 4 | tenth | 4/10 |
| Decimal part | 2 | hundredth | 2/100 |
What Kind of Decimal Is 0.42?
0.42 is a positive terminating decimal less than 1. It is written to the hundredths place.
Expanded Form of 0.42
0.42 = 4/10 + 2/100
0.42 = 0 + 42/100
The final nonzero digit is in the hundredths place, so its value is expressed with a denominator of 100.
How 0.42 Simplifies to 21/50
0.42 = 42/100
The greatest common divisor of 42 and 100 is 2.
42 ÷ 2 = 21
100 ÷ 2 = 50
Therefore, 42/100 = 21/50.
0.42 as a Percentage
To convert 0.42 to a percentage, multiply it by 100.
0.42 × 100 = 42
Therefore, 0.42 = 42%.
Decimals Equivalent to 0.42
0.42 = 0.420 = 0.4200
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 |
|---|---|---|---|
| 0.42 | hundredths | 42/100 | 21/50 |
| 0.420 | thousandths | 420/1000 | 21/50 |
| 0.4200 | ten-thousandths | 4200/10000 | 21/50 |
Visual Model of 0.42
42hundredths
A 100-part grid would be too dense at small screen sizes, so this symbolic model keeps the place-value relationship readable.
0.42 on a Number Line
0.42 lies between 0.41 and 0.43. It is 0.58 below 1 and 0.42 above 0.
On a number line from 0 to 1, it appears 42% of the way from 0 to 1.
00.421
How Far Is 0.42 from 1?
1 − 0.42 = 0.58
1 − 21/50 = 29/50
0.42 is fifty-eight hundredths below 1. The remaining part is 58/100 = 29/50 = 58%.
0.42 Compared with Similar Decimals
| Decimal | Spoken form | Place-value form | Fraction | Percentage | Relationship |
|---|---|---|---|---|---|
| 0.042 | zero point zero four two | forty-two thousandths | 21/500 | 4.2% | ten times smaller than 0.42 |
| 0.42 | zero point four two | forty-two hundredths | 21/50 | 42% | current value |
| 0.420 | zero point four two zero | four hundred twenty thousandths | 21/50 | 42% | same numerical value, written to the thousandths place |
| 4.2 | four point two | four and two tenths | 21/5 | 420% | ten times larger than 0.42 |
Quick Practice
How is 0.42 read digit by digit?
Zero point four two.
What is the place-value word form of 0.42?
Forty-two hundredths.
What fraction is 0.42 in lowest terms?
21/50.
What percentage is equal to 0.42?
42%.
Which is greater: 0.42 or 0.042?
0.42 is ten times as large.
Is 0.42 equal to 0.420?
Yes. The added trailing zero changes written precision, not numerical value.
Frequently Asked Questions
How do you write 0.42 in words?
0.42 in words is zero point four two.
Why is 0.42 called forty-two hundredths?
Because the digit 4 is in the hundredths place. Therefore, 0.42 represents forty-two hundredths.
What fraction is 0.42?
0.42 is 42/100 exactly and 21/50 in lowest terms.
Can 42/100 be simplified?
Yes. Divide its numerator and denominator by 2 to get 21/50.
What percentage is 0.42?
0.42 is equal to 42%.
Is 0.42 the same as 0.420?
Yes. 0.42 and 0.420 have the same numerical value. However, 0.42 is written to the hundredths place, while 0.420 is written to the thousandths place and may communicate greater recorded precision.
Is 0.42 larger than 0.042?
Yes. 0.42 is ten times as large as 0.042.
What type of decimal is 0.42?
0.42 is a positive terminating decimal less than 1. It is written to 2 decimal places and represents forty-two hundredths.