Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 3.14 is a decimal.

Front

How do you add decimals?

Back

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

Front

What is the sum of 7.25 and 2.76?

Back

The sum is 10.01.

Front

How do you subtract decimals?

Back

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

Front

What is 41.2 written with two decimal places?

Back

41.20.

Front

What is the combined weight of a dog weighing 16.27 pounds and another weighing 28.53 pounds?

Back

The combined weight is 44.80 pounds.

Front

What is the total of 42.07 miles, 29.3 miles, and 34.8 miles?

Back

The total is 106.17 miles.

Front

What is 32.15 + 24.15?

Back

The answer is 56.30.

Front

Why is it important to align 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 does it mean to round a decimal?

Back

Rounding a decimal means adjusting it to a nearby value that is simpler or easier to work with, often to a certain number of decimal places.