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Unlike addition, there is no need to line up the decimal points.

Just multiply ignoring the decimal points. When you are done, move the decimal point of the result to the left equal to the number of digits after the decimal point for both multiplicands.

Q: Do you line up decimal points when multiplyig?

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you have to line up the decimal points because you need to keep each place value in the same column so when you add or subtract you wont make any errors

You line up the decimal points and subtract, and carry the decimal point down to the same position in your answer: 1.3

You do not, but it is easier.

Line up the decimal points in a vertical column. Then add the numbers while ignoring the decimal point. Finally, put a decimal point in the answer in the same column as for the summands.

The lining up should be done in such a way that the decimal points are underneath each other.

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86.7

line up the decimal points, and add them

you have to line up the decimal points because you need to keep each place value in the same column so when you add or subtract you wont make any errors

It is easier to add up numbers. It may also be easier to spot errors where the decimal point is misplaced.

To add decimal numbers you line up the decimal points... _0.88 +0.035 --------- _0.915

You do not, but it is easier.

You line up the decimal points and subtract, and carry the decimal point down to the same position in your answer: 1.3

Line up the numbers in such a way that the decimal points are aligned. . Example: 567.89 - 23.4 567.89 - 23.4 ===== 544.49

Line up the decimal points in a vertical column. Then add the numbers while ignoring the decimal point. Finally, put a decimal point in the answer in the same column as for the summands.

The lining up should be done in such a way that the decimal points are underneath each other.

Line up the decimal points and then subtract one from the other.

So the decimal points line up and you can have a visual clue that larger numbers are longer.