Three halves
1.5
3,800 = three thousand eight hundred.
5.7 billion in numeric form is 5,700,000,000
There are seven halves in three and a half. This is because three whole units contain six halves, and adding the half gives a total of seven halves.
0.53
Three halves
'Three and three tenths' is already in word form. The numeric form would be 3 3/10.
1.5
You have written it in numeric form.
1,300,000
3,800 = three thousand eight hundred.
93 + 2,000 = 2,093
5.7 billion in numeric form is 5,700,000,000
You wrote it correctly. It would be 1.03 in numeric form.
3
Thirty thousand in numeric form is 30,000