Review writing decimals in written form, and try some practice problems.

Written form

Written form is a way to write numbers using only words.


Let's write 3.405\blueD3.\purpleD40\maroonD5 in written form.
3.405=3 ones+405 thousandths3.405=\blueD{3}\text{ ones}+\,\purpleD{4}{0}\maroonD5\text{ thousandths}
First, we will read the number to left of the decimal.
Then, we read the decimal as "and\text{\goldD{and}}".
Three and\blueD{\text{Three}} \goldD{\text{ and}}
Finally, we read the numbers right of the decimal and state the place value of the digit farthest to the right.
Three and\blueD{\text{Three}}\goldD{\text{ and}}   hundred  thousandthsfourfive\text{ \purpleD{four} hundred \maroonD{five} thousandths}
3.4053.405 in written form is three and four hundred five thousandths.
Want to learn more about written form? Check out this video.


Problem 1
Write the following number in decimal notation.
Nine and three hundred twenty-one thousandths
  • Хариулт дараах хэлбэртэй байх ёстой
  • бүхэл тоо 66 гм
  • an exact decimal, like 0.750.75
  • үл хураагдах зөв бутархайн жишээ 3/53/5
  • үл хураагдах засагдах бутархайн жишээ 7/47/4
  • холимог тоо, жишээ нь 1 3/41\ 3/4

Want to try more problems like this? Check out this exercise.