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Decimals Operations Quiz

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Questions and Answers

What is the first step in adding decimals?

Start adding from the leftmost column.
Line up the decimal points in columns. (correct)
Add the numbers as whole numbers only.
Use all zeros as placeholders.

Which procedure is unique to subtracting decimals compared to adding them?

Writing the numbers vertically.
Regrouping or borrowing if needed. (correct)
Subtracting from rightmost column.
Using placeholder zeros.

How should you treat numbers with different decimal places before performing addition or subtraction?

Always keep the smaller number as is.
Add zeros to equalize the decimal places. (correct)
Ignore the decimal points.
Use the larger number's decimal places only.

What is the correct placement of the decimal point in the answer after performing decimal operations?

<p>Directly below the decimal points of the numbers involved. (D)</p> Signup and view all the answers

When subtracting a decimal from a whole number, what should you always ensure?

<p>Convert the whole number to a decimal. (A)</p> Signup and view all the answers

Flashcards

Adding decimals

The process of combining two or more decimal numbers.

Subtracting decimals

The process of finding the difference between two decimal numbers.

Placeholder zeros

Zeros added to the right of a decimal number to make it have the same number of decimal places as another number.

Decimal point alignment

The position of a decimal point in a number determines its value.

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Decimal number

A number with a whole number part and a fractional part separated by a decimal point.