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This is true for adding and subtracting ALL numbers, not just decimal representations.

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Q: Why it is important to line up decimal numbers by their play value when you add or subtract them?
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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


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

It isn't really that important, it just makes the problem solving easier and gives you less of a chance of making a mistake.


When adding or subtracting decimal how can you be sure to add or subtract only digits that have the same place value?

The simplest way is to line up the numbers so that their decimal points are aligned, and corresponding digits are also aligned according to their place value.


How do you do add and subtract decimals?

How To Add/Subtract DecimalsTo add decimals you HAVE TO LINE UP THE DECIMAL POINTS and then add the numbers up (Tip: when your first starting if the decimals don't go to the same place value you can add as may zeros at the END of the decimal. This does NOT change the place value)After you have added up the digits you "drop" the decimal point down.Example 105.43+23.4=?105.43+23.40-----------128.83To subtract decimals it's the same thing as adding YOU MUST LINE UP THE DECIMALS. You would subtract as you normally would.You would then "drop" down the decimal point.Example 109.783-43.39=?109.783-43.390----------66.393


Why is it important to add and subtract integers?

It is important to add and subtract integers: to get a new integer value in mathematics .


Are natural numbers are decimal numbers?

Almost all numbers that we use in daily life are decimal numbers. The place value of each digit is ten times the place value of the digit to its right. And that is all that is required of decimal numbers. A decimal point is not necessary.


What is the value of the numbers after a decimal?

A decimal is a way of representing a number. There is no number after a number.A decimal is NOT a decimal point.


How do you know whether you should add or subtract the value of the two numbers?

By the signs: 2+2(Add) 2-2(Subtract) +=add -=subtract


What is 1.20 as a decimal?

1.20 has the same value as 1.2 and they are both decimal numbers


How do you find the value of x when you have three other numbers?

add the three numbers the subtract 180 from your sum


When adding or subtracting decimals how can you be sure to add or subtract only digits that have the same place value?

The simplest way is to line up the numbers so that their decimal points are aligned, and corresponding digits are also aligned according to their place value.


How do you add two numbers with opposite signs?

Subtract the absolute value of the smaller number from the absolute value of the larger number. The answer will have the sign of the larger numbers.