Write the number which has:I. 2 tens, 3 ones, 1 tenths and 3] hundredths.II. 1 hundreds, 2 ones, 2 hundredths and 3 tenths.III. 2 hundreds, 3tens, 5 ones, 3 hundredths, 2 tenths and 1 thousandths.IV. 3 hundreds, 1 tens, 5 ones, 2 tenths, 1 hundredths and 4 thousandths.

Let's solve each part of the question step by step:

I. 2 tens, 3 ones, 1 tenth, and 3 hundredths
Tens: 2 tens = 20
Ones: 3 ones = 3
Tenths: 1 tenth = 0.1
Hundredths: 3 hundredths = 0.03
Now, adding them together: 20 + 3 + 0.1 + 0.03 = 23.13

So, the number is 23.13.

II. 1 hundred, 2 ones, 2 hundredths, and 3 tenths
Hundreds: 1 hundred = 100
Ones: 2 ones = 2
Hundredths: 2 hundredths = 0.02
Tenths: 3 tenths = 0.3
Now, adding them together: 100 + 2 + 0.02 + 0.3 = 102.32

So, the number is 102.32.

III. 2 hundreds, 3 tens, 5 ones, 3 hundredths, 2 tenths, and 1 thousandth
Hundreds: 2 hundreds = 200
Tens: 3 tens = 30
Ones: 5 ones = 5
Hundredths: 3 hundredths = 0.03
Tenths: 2 tenths = 0.2
Thousandths: 1 thousandth = 0.001
Now, adding them together: 200 + 30 + 5 + 0.03 + 0.2 + 0.001 = 235.231

So, the number is 235.231.

IV. 3 hundreds, 1 ten, 5 ones, 2 tenths, 1 hundredth, and 4 thousandths
Hundreds: 3 hundreds = 300
Tens: 1 ten = 10
Ones: 5 ones = 5
Tenths: 2 tenths = 0.2
Hundredths: 1 hundredth = 0.01
Thousandths: 4 thousandths = 0.004
Now, adding them together: 300 + 10 + 5 + 0.2 + 0.01 + 0.004 = 315.214

So, the number is 315.214.

Final Answers:
I. 23.13
II. 102.32
III. 235.231
IV. 315.214