Solve Decimal Addition: 0.77 + 30.6 in Vertical Format

Question

00:00 Solve

00:03 Add 0 in missing digits, place the decimal point

00:08 First add the smallest digits

00:11 Substitute, and continue adding

00:21 Calculate and place the ones, remember 1 above

00:30 Add 1 to this calculation

00:39 Substitute, and continue to add, calculate and place accordingly

00:49 And this is the solution to the question

To solve this problem, follow these steps:

Step 1: Align the numbers $0.77$ and $30.6$ by their decimal points:
$\begin{aligned} 30&.6 \\ + ~~ 0&.77 \\ \hline \end{aligned}$
Step 2: Add these numbers starting from the rightmost digit, considering each place value.
Adding hundredths place:
$0 + 7 = 7$
Adding tenths place:
$6 + 7 = 13$ , write down $3$ and carry over 1 to the next column.
Adding whole number and carry over:
$0 + 1 + 30 = 31$
Thus, the sum is $31.37$ .

Therefore, the solution to the problem is $31.37$ .

31.37