Monday 4.4A Adding/Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a way of representing numbers that are not whole numbers, using a point to separate the whole 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 0.5 in cents?

Back

0.5 is equal to 50 cents.

Front

If a lunch costs $3.25 and the total cost is $10.50, how much is the ticket?

Back

The ticket costs $7.25.

Front

What is 365.21 - 154.3?

Back

The answer is 210.91.

Front

What is 1,456.35 - 658.37?

Back

The answer is 797.98.

Front

What is 65.3 - 45.6?

Back

The answer is 19.7.

Front

What is 6,158.69 + 3,528.3?

Back

The answer is 9,686.99.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting the number to a nearby value that is easier to work with, often to a certain number of decimal places.