What is standard form, when it is written out in words or with numbers?

numbers....

standard form is like : 1 + 2 = 3

Thank you!

It depends on the use of the term 'standard form'.

It can mean the usual representation of an equation, for example the equation for a straight line as y=mx+c could be described as standard form.
'In standard form' can also mean 'in scientific notation.'

When referred to in the context of numbers, standard form is a way of writing a number using digits. In standard form, the digits are arranged in a way that does not contain any additional symbols or words. It is the most common and straightforward way of representing numbers.

For example, in words, the number "one hundred twenty-three" would be written as 123 in standard form. Similarly, the number "five million seven hundred eighty-two thousand four hundred sixty-nine" would be written as 5,782,469 in standard form.

In standard form with numbers, each digit has a specific place value based on its position in the number. The rightmost digit represents the ones place, the second rightmost represents the tens place, the third rightmost represents the hundreds place, and so on. The place values increase by a factor of 10 for each position to the left.

To convert a number written in words to standard form, simply identify the value of each word (e.g., thousand, million) and utilize the appropriate place value. Once you determine the place values, write the number as a series of digits in the correct order.

To convert a number in standard form back to words, you identify the place value of each digit and determine its corresponding word (e.g., thousand, million). Then, you combine the words to form the number in words.