**Write the following number by entering one digit in each box of the place value chart.**
*Twenty-one and four hundred six thousandths*
Tens | Ones | . | Tenths | Hundredths | Thousandths
:-: | :-: | :-: | :-: |:-: | :-: | :-:
[[☃ numeric-input 1]] | [[☃ numeric-input 2]] | . | [[☃ numeric-input 6]] | [[☃ numeric-input 7]] | [[☃ numeric-input 8]]
$$
**Now write the number in standard form.**
[[☃ numeric-input 5]]