Adding, Subtracting, and Rounding Decimals - study guide

Front

What is the process of adding decimals?

Back

To add decimals, align the numbers by the decimal point and add each column starting from the right, carrying over if necessary.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract each column starting from the right, borrowing if necessary.

Front

What is rounding in the context of decimals?

Back

Rounding is the process of adjusting a number to a nearby specified value, often to make it simpler or easier to work with.

Front

How do you round a decimal to the nearest whole number?

Back

To round a decimal to the nearest whole number, look at the digit in the tenths place. If it is 5 or greater, round up; if it is less than 5, round down.

Front

What is the sum of $13.16 and $5.90?

Back

$19.06

Front

What is the difference when you subtract $0.54 from $9.28?

Back

$8.74

Front

If Kelly has $20 and spends $2.15 and $6.58, how much does she have left?

Back

$11.27

Front

How much more does a book costing $5.80 cost than a magazine costing $3.20?

Back

$2.60

Front

What is the result of rounding $5.29 to the nearest dollar?

Back

$5.00

Front

What is the importance of aligning decimal points when performing addition or subtraction?

Back

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