You have a number expresed as units, tens, hundreds and thosands and need to determine which number they form.
> 30 ones refers that this number has 30 units, it can laso be expresed as 3 tens.
> 2 thousands is equal to 2000
> 4 hundreds is equal to 400
> 60 ten, to determine this number you have to multiply 60 by 10 = 600
> 100 hundreds, means that you have 100 times one hundred, 100*100= 10000
Add all numbers: 30 + 2000 + 400 + 600 + 10000= 13030