3.625 + 4.9 =
a. 7.525
b. 8.525
с. 41.15
d. 52.63
The correct answer and explanation is:
The correct answer is b. 8.525.
Explanation:
To solve the problem 3.625 + 4.9, start by aligning the numbers properly. The decimal places should match up so the addition can be done correctly.
- First, write the numbers:
3.625- 4.900
- You can add a zero to the 4.9 to make it 4.900 so the decimal points align properly.
Step-by-step addition:
- Start by adding the digits in the thousandths place (on the far right):
- 5 + 0 = 5
- Move to the hundredths place:
- 2 + 0 = 2
- Now add the tenths place:
- 6 + 9 = 15 (Write down 5 and carry over the 1)
- Finally, add the whole numbers and include the carried over 1:
- 3 + 4 = 7, and adding the carried-over 1 gives 8.
Final result:
The sum is 8.525.
This process demonstrates how aligning the decimal places is essential to performing the addition correctly, ensuring each column is added accurately.