Twenty-four and seven hundred twelve thousandths.
I would write it as twenty-four thousandths.
Twelve thousandths and four tenths
I would write 13.024 as thirteen and twenty-four thousandths
twelve and four tenths
Thirty and twenty-four thousandths.
twenty four ten thousandths = 24/10000 = 24 ÷ 10000 = 0.0024
Twelve million, four hundred forty-four thousand, seven hundred twenty-one and ninety-six thousandths.