In English, there are two common ways to express a number: using numerals and using words. The numeral 70 represents the quantity or value that comes after 69 and before 71. The word form of 70 is “seventy.”
The word “seventy” consists of two parts: “seven” and “-ty.” The first part, “seven,” is the base number, and the second part, “-ty,” is a suffix that represents the quantity of ten. So, “seventy” is made up of seven tens, or 7 x 10.
When writing numbers in word form, there are some important guidelines to follow:
- Use hyphens to connect multi-word numbers: When writing out numbers from 21 to 99, you should connect the words with a hyphen. For example, 25 is written as “twenty-five,” and 87 is written as “eighty-seven.” This helps to clarify that the words are being used together to represent a single number.
- Use “and” to represent the decimal point: When writing out numbers that include a decimal point, you should use the word “and” to indicate where the decimal point falls. For example, the number 3.14 can be written as “three and fourteen hundredths.”
- Use the correct suffix for ordinals: When writing out numbers that indicate position in a sequence, you should use the correct suffix. For example, “first,” “second,” and “third” are used for the numbers 1, 2, and 3 respectively. The suffix “-th” is used for all other ordinals. So, 70th is written as “seventieth.”
- Use numerals for technical writing: In technical writing or other contexts where precision is important, it is often better to use numerals rather than word form. For example, “70” is more precise and less ambiguous than “seventy.”
In addition to these guidelines, there are some other considerations when writing numbers in word form. Here are a few additional tips:
- Be consistent: When writing out numbers in a document or piece of writing, it’s important to be consistent in your approach. If you use numerals for some numbers and words for others, it can be confusing to the reader. Decide on a consistent approach and stick to it throughout your writing.
- Avoid starting sentences with numerals: While it’s fine to use numerals within a sentence, it’s generally best to avoid starting a sentence with a numeral. Instead, use the word form. For example, instead of writing “70 is the number of years since the founding of the United Nations,” you could write “Seventy years have passed since the founding of the United Nations.”
- Use words to emphasize magnitude: When you want to emphasize the magnitude of a number, it can be effective to use word form rather than numerals. For example, “a million dollars” sounds more impressive than “$1,000,000.”
- Use words to convey a sense of scale: When you’re writing about large numbers, it can be helpful to use words to convey a sense of scale. For example, “the population of the world is over seven billion” gives a clearer sense of the scale of the number than “the population of the world is 7,000,000,000.”
In conclusion, the word form of the number 70 is “seventy.” When writing numbers in word form, it is important to use hyphens to connect multi-word numbers, use “and” to represent the decimal point, use the correct suffix for ordinals, and consider using numerals for technical writing.
