Solve the addition problem: 52.34 + 1.720.

Let's solve this addition problem by aligning the numbers by their decimal points. We can add a zero to 1.720 to make it 1.720 so both numbers have three decimal places.

  52.340
+  1.720
-------

Add the thousandths place: 0 + 0 = 0.

  52.340
+  1.720
-------        0

Add the hundredths place: 4 + 2 = 6.

  52.340
+  1.720
-------       60

Add the tenths place: 3 + 7 = 10. Write down 0 and carry over 1 to the ones place.

  52.340
+  1.720
-------      060

Add the ones place: 1 (carry-over) + 2 + 1 = 4.

  52.340
+  1.720
-------     4.060

Add the tens place: 5 + 0 = 5.

  52.340
+  1.720
-------   54.060

Ответ: 54.060