seven and nineteen hundredths
719 = (7 x 100) + (1 x 10) + (9 x 1)
Writing a number in standard form simply means to express the number in its 'normal' form. Therefore, the way you wrote the number is the standard form for your example.
64.218 is said/written as ' Sixty four point two one eight '. NOT as ' Sixty four point two hundred and eighteen' , because the decimal digits are being given incorrect units. e.g. The decimal '2' is a TENTH. not two HUNDRED;
write the word form and expanded form of the number four
First of all to correct your English Grammar. The singular 'I' is always written as a CAPITAL letter, where ever it appears in the sentence. So your question should read ' How do I write 12 in word form ? '. To answer your question the number '12' is written as the word ' twelve'.
2118077 word form
0.7 As a decimal it is 'zero point seven'. Your correspondent (9y ago) quoted ' seven tenths'. This is the fractional form and is written as ' 7/10 '.
seven and forty two one hundredths
You can write 5.24 in word form as five and twenty-four hundredths
It is 719/1000
636247 = 636,247.0 In word form it is ' Six hundred and thirty six thousand, two hundred and forty seven '.
You can write 14.12 in word form as fourteen and twelve hundredths