Add and Subtract Decimals

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a decimal point. For example, 0.5 is a decimal that represents 5/10.

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 total cost of 4.6m of fabric at $3.57 per meter?

Back

$16.42

Front

If City A received 3.74 inches of rain and City B received 9.8 inches, how much rain did they get total?

Back

13.54 inches

Front

How much change will Abby receive after buying a game for $7.89 and batteries for $5.49 with a $20 bill?

Back

$6.62

Front

What is 15.07 - 12.2?

Back

2.87

Front

If Sara earned $27.50, $33, and $49.75, how much money will she have left after buying a desk for $100?

Back

$10.25

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 value of 0.75 + 0.25?

Back

1.00