Add and Subtract Decimals Flashcard

Front

What is a decimal?

Back

A decimal is a fraction whose denominator is a power of ten, represented with a dot (decimal point) separating 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, 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 14.56 + 34.7?

Back

49.26

Front

What is the value of 16.43 - 1.043?

Back

15.387

Front

Why is it important to line up decimal points when adding or subtracting?

Back

Lining up decimal points ensures that each digit is in the correct place value, which is crucial for accurate calculations.

Front

What is the sum of 23.4 and 19?

Back

42.4

Front

What is the value of 36.8 - 0.8?

Back

36.0

Front

If a ticket costs $3.00, how much do 5 tickets cost?

Back

$15.00

Front

What is the total cost if Lia spends $8.50 and James spends $12.00?

Back

$20.50