Adding and Subtracting 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 sum 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, placing the decimal point in the difference directly below the other decimal points.

Front

What is the value of 0.5 in fractions?

Back

0.5 is equivalent to 1/2 in fractions.

Front

What is the total cost of 4 items priced at $57.65 each?

Back

The total cost is $230.60 (4 x $57.65 = $230.60).

Front

What is 200 - 189.76?

Back

200 - 189.76 = 10.24.

Front

What is 93 - 50.30?

Back

93 - 50.30 = 42.70.

Front

What is 76.3 - 25?

Back

76.3 - 25 = 51.3.

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 the difference between a whole number and a decimal?

Back

A whole number is a number without fractions or decimals, while a decimal includes a decimal point and represents a part of a whole.