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Because you could mess up and add the wrong numbers together.
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∙ 11y ago
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Why is it important to line up the decimal point before or after adding a decimal?
That is because if you don't, you will get the wrong answer. It is ALWAYS important to LINE up the decimals.
What is the first step when adding decimals?
line up the demials
Show an example of adding decimals?
39.63 +42.35 ------------ 81.98 Just line up the decimals and then add.
Do you line up decimals in subtraction?
Yes. Line up them up when you're adding, too.
How can you add decimals without a place-value chart to make sure you adding the same place value?
you can line up the decimals
When adding or subtracting decimals the decimal point must be in line for all numbers?
Yes.
When do you line up the decimal?
you only line the decimals up when you are subtracting or adding not when you are multiplying im not sure about division...
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.
What are the three rules of adding and subtracting decimals for 5 grade?
line up the decimal point when your adding and subtracting. add annex a zero when you have extra number. sometimes you can use a number line.
What are some of the rules to follow with decimals?
1. When adding, the decimals MUST line up: 012.3 +32.1 2. When multiplying, you dont have to put the decimals side by side: 12.3 x323.55 Then you count how many numbers are after the decimals, which, in this case, is three. Hope it helped!
Why do you line up the decimals when adding decimals?
Because left of the decimal point goes times 10 for every position and right of the decimal point goes times -10 for every position.
Why is it important to line up the decimal?
It is important for you to line up the decimals vertically the way I did above so that you can keep track of the place-value position of the digits.
