Adding and Subtracting Decimals

Front

What is a decimal?

Back

A decimal is a number that includes a decimal point, which separates the whole number part from the fractional part. For example, 2.5 is a decimal.

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

What is the sum of 1.70 + 4.65?

Back

6.35

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 result of 9.43 - 3.34?

Back

6.09

Front

What is the total of 4.18 + 3.11?

Back

7.29

Front

Which subtraction equation gives 1.03?

Back

9.45 - 8.42

Front

What is the sum of 456.1 + 345.98?

Back

802.08

Front

What is the place value of the digit 5 in 3.45?

Back

The place value of 5 in 3.45 is 'five hundredths'.

Front

What does it mean to round a decimal?

Back

Rounding a decimal means adjusting its value to a nearby specified place value, making it simpler to work with. For example, rounding 2.76 to the nearest whole number gives 3.