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To solve this problem, we will add the decimal numbers 0.75 and 0.35 by aligning them according to their decimal points:
Step 1: Align the numbers vertically by their decimal points:
Step 2: Add the digits starting from the rightmost column (hundredths place):
- Hundredths place: . Write 0 and carry over 1 to the tenths place.
- Tenths place: . Write 1 and carry over 1 to the units place.
- Units place: .
Step 3: Write the final sum by placing the decimal point correctly below the decimal points of the addends:
The sum of 0.75 and 0.35 is therefore , which can be simplified to by removing the trailing zero after the decimal point.
The correct answer is, therefore, , corresponding to choice .
1.1
Choose the correct writing form:
Lining up decimal points ensures you're adding the same place values together - tenths with tenths, hundredths with hundredths. Without proper alignment, you'll get the wrong answer!
When two digits add up to 10 or more, you write down the ones digit and carry the tens digit to the next column left. Like - write 0, carry 1.
Yes! Trailing zeros after the decimal point don't change the value. So 1.10 = 1.1. Both represent the same amount: 1 whole and 1 tenth.
You can check by adding the numbers in a different order: should give the same result. Also, estimate: 0.75 is close to 1, and 0.35 is close to 0.5, so the sum should be near 1.5.
No problem! You can add trailing zeros to make them the same length. For example, treat 0.5 as 0.50 when adding to 0.25. The decimal points still line up perfectly.
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