Question

add.
2.91 + 30.4

Explanation:

Step1: Align decimal points

To add decimals, we first align the decimal points. So we can write \(30.4\) as \(30.40\) to have the same number of decimal places as \(2.91\). Now the problem becomes \(2.91 + 30.40\).

Step2: Add the numbers

We add the numbers column by column starting from the rightmost digit (the hundredths place, then tenths, then ones, then tens).

• Hundredths place: \(1 + 0 = 1\)
• Tenths place: \(9 + 4 = 13\), we carry over \(1\) to the ones place and write \(3\) in the tenths place.
• Ones place: \(2 + 0 + 1 = 3\) (the carried over \(1\))
• Tens place: \(3 + 0 = 3\)

Putting it all together, we get \(33.31\).

Answer:

\(33.31\)