Rounding Decimals (Algebra 1 Lab)

Front

What does it mean to round a number to the nearest hundredth?

Back

Rounding a number to the nearest hundredth means adjusting the number to two decimal places, based on the value of the third decimal place. If the third decimal is 5 or greater, you round up; if it's less than 5, you round down.

Front

How do you round 1,230.799 to the nearest hundredth?

Back

To round 1,230.799 to the nearest hundredth, look at the third decimal place (9). Since it is 5 or greater, round up the second decimal place (9) to 0, resulting in 1,230.80.

Front

What is the result of rounding 72.178 to the nearest hundredth?

Back

When rounding 72.178 to the nearest hundredth, look at the third decimal place (8). Since it is 5 or greater, round up the second decimal place (7) to 8, resulting in 72.18.

Front

What does it mean to round a number to the nearest thousandth?

Back

Rounding a number to the nearest thousandth means adjusting the number to three decimal places, based on the value of the fourth decimal place. If the fourth decimal is 5 or greater, you round up; if it's less than 5, you round down.

Front

How do you round 7.4365 to the nearest thousandth?

Back

To round 7.4365 to the nearest thousandth, look at the fourth decimal place (5). Since it is 5 or greater, round up the third decimal place (6) to 7, resulting in 7.437.

Front

What is the rule for rounding numbers?

Back

The rule for rounding numbers is: if the digit to the right of the place value you are rounding to is 5 or greater, round up; if it is less than 5, round down.

Front

What is 1.99 rounded to the nearest tenth?

Back

1.99 rounded to the nearest tenth is 2.0, because the digit in the hundredths place (9) is 5 or greater, so you round up.

Front

What is 1.72 rounded to the nearest tenth?

Back

1.72 rounded to the nearest tenth is 1.7, because the digit in the hundredths place (2) is less than 5, so you round down.

Front

What is the difference between rounding to the nearest hundredth and rounding to the nearest tenth?

Back

Rounding to the nearest hundredth adjusts the number to two decimal places, while rounding to the nearest tenth adjusts it to one decimal place. The rounding rules apply similarly, but the place value considered is different.

Front

Why is it important to understand rounding in mathematics?

Back

Understanding rounding is important in mathematics because it helps simplify numbers for easier calculations, comparisons, and estimations, especially in real-world applications.