To find the total of 23.7, 43.1, and 89, you simply add these numbers together: 23.7 + 43.1 + 89
The correct answer and explanation is:
The total of 23.7, 43.1, and 89 is 155.8.
To explain how this addition works, let’s break it down step by step:
- Aligning the decimal points: To add numbers with decimals, you start by aligning the decimal points. This helps ensure that the numbers are correctly added in corresponding places (tenths, hundredths, etc.).
- 23.7
+43.1
+89.0
- 23.7
- Adding the numbers: Start by adding the digits in the rightmost column (tenths place).
- 7 + 1 + 0 = 8. Write 8 in the tenths place.
- Moving to the next column (ones place): Add the digits in the ones column.
- 3 + 3 + 9 = 15. Write 5 in the ones place and carry over 1 to the tens column.
- Adding the tens column: Now, add the digits in the tens place, remembering to include the carryover of 1.
- 2 + 4 + 8 + 1 (carryover) = 15. Write 5 in the tens place and carry over 1 to the hundreds column.
- Adding the hundreds column: Finally, add the digits in the hundreds column (remember, 89 has no hundreds place, so treat it as 0).
- 0 + 0 + 1 (carryover) = 1. Write 1 in the hundreds place.
After adding the numbers, the total sum is 155.8.
Adding decimal numbers follows the same rules as adding whole numbers, but it’s important to line up the decimal points and ensure you handle the carryovers properly. This is especially crucial when dealing with numbers that have different decimal places.