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To add decimal numbers:

  1. Put the numbers in a vertical column, aligning the decimal points
  2. Add each column of digits, starting on the right and working left. If the sum of a column is more than ten, "carry" digits to the next column on the left.
  3. Place the decimal point in the answer directly below the decimal points in the terms.

To subtract decimal numbers:

  1. Put the numbers in a vertical column, aligning the decimal points.
  2. Subtract each column, starting on the right and working left. If the digit being subtracted in a column is larger than the digit above it, "borrow" a digit from the next column to the left.
  3. Place the decimal point in the answer directly below the decimal points in the terms.
  4. Check your answer by adding the result to the number subtracted. The sum should equal the first number.
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Q: How do you line up decimals when you subtract or add?
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Related questions

How do you add and subtract decimal models?

you add and subtract decimals by writing down your number and then line up your decimal's.yourwelcome kinda smart for a math problem like that huh?


How do you add or subtract decimals?

how do we add or subtract decimal? its the same thing as using regular subraction and addition. Example: 12.4 +8.1 ______ =20.5 The same in subtraction! Just keep the decimals alligned!


How to subtract decimals?

You line up the decimals and simply subtract. Below is an example. 2.989-1.989= 2.989 1.989 --------- 1.000


What do you do when you add or subtract decimals?

Adding and subtracting decimals is easy. When you put the numbers one above the other, line up the decimals vertically and treat as you would any whole number just keep the decimals in line and bring it straight down to your answer.


How do you subtract 151.6-44.85?

196.45


How do you add decimals step by step?

line up the decimals together


What is the rule for add decimals?

Just make sure you line up the decimals


130.40 - 129.60 equals?

0.8000000000000114


Explain why it is important to line up decimal numbers by their place value when you add or subtract them?

explain why it is important to line up decimal numbers by their place value when you add or subtract them


Show an example of adding decimals?

39.63 +42.35 ------------ 81.98 Just line up the decimals and then add.


Do you have to line up the decimals when you subtract?

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


How do you add decimals to thousandths?

You line up the decimals with the thousandths and put the decimal straight down from where it is and just add with the decimal in the same spot.