Adding and Subtracting Decimals

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 difference between 9.73 and 2.52?

Back

7.21

Front

What is the difference between 9.28 and 0.54?

Back

8.74

Front

What is the difference between 27.96 and 16.2?

Back

11.76

Front

If Nash earns $12 per week for 3 weeks, how much does he earn in total?

Back

$36

Front

If Nash spends $12.48 after earning $36, how much does he have left?

Back

$23.52

Front

What is the difference between $18 and $3.55?

Back

$14.45

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.