Decimal Standard Form to Word Name  

Write 13.578 in words.

Step 1:  Write the whole number part (the section in front of the decimal) if there is one. 13.578  thirteen

Step 2:  13.578 Write the decimal point as “and”.  Thirteen and

Step 3:  Write the number to the right of the decimal point as you would a whole number.  13.578  Thirteen and five hundred seventy-eight

Step 4:  Write the place value of the last digit.  13.578

The 8 is in the thousandths place so you answer is  

Thirteen and five hundred seventy-eight thousandths 

Example: 

Write 0.3007 in words.

[A]  three thousand seven hundred thousandths

[B]  three thousand and seven hundred thousandths

[C]  three thousand and seven ten-thousandths

[D]  three thousand seven ten-thousandths

The answer is D because your digits are after the decimal so you don’t need the word “and” then if you check your place value your last place digit is in the ten thousandths place. 

Word Name to Decimal Standard Form

Example:  Write eight and six hundred four thousandths in standard form.

Step 1:  Write the number before and, if there is one.  8

Step 2:  Write a decimal point for the word and.        8. 

Step 3:  Write the numbers after the word and as you would a whole number.  604

Step 4:  Then use place value to check that the number is in the right place.  The last digit should be in the place named by the word name.  The answer is 8.604 because it says thousandths.