Adding & Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form. It represents a part of a whole number, using a dot (.) to separate the whole number from the fractional part.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers. Place the decimal point in the answer directly below the other decimal points.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers. Place the decimal point in the answer directly below the other decimal points.

Front

What is the sum of 827.04 and 6.72?

Back

833.76

Front

What is the difference when you subtract 409.4 from 675.32?

Back

265.92

Front

What is the sum of 48.057, 3.965, and 18.337?

Back

70.359

Front

What is 2.07 plus 0.699?

Back

2.769

Front

What is 0.944 plus 0.985?

Back

1.929

Front

What is the importance of aligning decimal points when adding or subtracting?

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 decimals?

Back

A common mistake is not aligning the decimal points, which can lead to incorrect sums.