Choose the correct format:
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Choose the correct format:
To correctly set up a vertical addition of decimal fractions, it is crucial to align the numbers by their decimal points. Let's break down the choices:
Choice 1 presents the numbers in the proper format. The decimal points of and align vertically, ensuring accurate addition.
Choice 2 misaligns the decimal points, incorrectly starting further to the left than necessary.
Choice 3 also misaligns the decimals, wanting to begin even further than choice 2.
Thus, the correct choice is Choice 1, since it correctly aligns the numbers by their decimal points, facilitating accurate addition of the values involved.
Therefore, the correct format choice is Choice 1.
Choose the correct writing form:
Because with decimals, the decimal point determines place value, not the first digit! Lining up from the left puts digits in wrong columns, like adding tenths to hundredths.
That's fine! Just align the decimal points and imagine invisible zeros at the end of the shorter decimal. For example, treat as when adding to .
Look for the decimal points forming a straight vertical line. In the correct format, the decimal point in should be directly under the decimal point in .
Yes! The shorter number should be positioned so its decimal point aligns with the longer number's decimal point. Don't just center it or put it anywhere convenient.
You'll get the wrong answer! Misaligned decimals mean you're adding wrong place values together, like adding tens to ones or tenths to hundredths.
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