A two-digit number has two digits, and each one has a job. The digit on the left counts tens. The digit on the right counts ones.
Look at 47. The 4 is in the tens spot, so it means 4 tens, which is 40. The 7 is in the ones spot, so it means 7 ones. Forty plus seven is forty-seven.
Read a two-digit number from left to right: tens digit first, then ones digit. Swap them and you get a different number.
The left digit tells you the tens, the right digit tells you the ones, and together they make the number.
In the number 32, which digit is the ones digit?