5 tenths plus 2 tenths is 7 tenths and 4 ones plus 3 ones is 7 ones. ** The first decimal has two decimal places and the second decimal has three decimal places. Set out the calculation ...
The number \(5.1492\) has four decimal places, while \(4.34\) has two decimal places. To round a number to a given number of decimal places, look at the number in the next decimal place.