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.

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

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 the value of 0.8 - 0.22?

Back

0.58

Front

What is the value of 19.8 - 16.9?

Back

2.9

Front

What is the value of 19.6 + 4.31?

Back

23.91

Front

What is the value of 19.21 + 11.03?

Back

30.24

Front

If you buy a hat for $10.95 and a shirt for $14.20, how much do you spend in total?

Back

$25.15

Front

If you pay with a $50.00 bill after spending $25.15, how much change do you receive?

Back

$24.85

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.