Adding and Subtracting Decimals Flashcardizz

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 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 0.25 + 0.75?

Back

0.25 + 0.75 = 1.00.

Front

What is the value of 5.5 - 2.3?

Back

5.5 - 2.3 = 3.2.

Front

If Lacy is 51.25 inches tall and Gerald is 46.65 inches tall, how much taller is Lacy?

Back

Lacy is 4.60 inches taller than Gerald.

Front

If Xavier spent $15.68 on a shirt, $29.67 on shoes, and $14.95 on pants, what is the total amount spent?

Back

Xavier spent a total of $60.30.

Front

How much change should Melissa receive if she paid $50 for groceries costing $39.46?

Back

Melissa should receive $10.54 in change.

Front

If Grace swam a mile in 21 minutes and Jill swam it in 19.47 minutes, how much faster was Jill?

Back

Jill swam 1.53 minutes faster than Grace.