Add and Subtract Decimals

Front

What is the process of adding decimals?

Back

To add decimals, align the numbers by their decimal points and add each column starting from the right, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by their decimal points and subtract each column starting from the right, borrowing if necessary.

Front

What is the value of 5.66 + 4.25?

Back

9.91

Front

If Paige grew 4.62 cm in the first year and 7.7 cm in the second year, how do you find her total growth?

Back

Add the two growth amounts: 4.62 cm + 7.7 cm = 12.32 cm.

Front

What is the result of 15.07 - 12.2?

Back

2.87

Front

How do you determine the amount of lime flavor jelly beans if Jerry bought 6.95 lbs and 1.75 lbs were cherry flavor?

Back

Subtract the cherry flavor amount from the total: 6.95 lbs - 1.75 lbs = 5.2 lbs.

Front

What is the sum of 5.49 and 0.5?

Back

5.54

Front

Why is it important to align decimal points when adding or subtracting decimals?

Back

Aligning decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Front

What is a common mistake when adding or subtracting decimals?

Back

A common mistake is misaligning the decimal points, which can lead to incorrect sums or differences.

Front

How can you check your work after adding or subtracting decimals?

Back

You can check your work by reversing the operation (e.g., if you added, subtract the result from one of the original numbers) or by estimating the answer.