Rounding to Nearest 10 and 100

Front

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

Back

Rounding a number to the nearest ten means adjusting the number to the closest multiple of ten. If the last digit is 5 or more, round up; if it's less than 5, round down.

Front

How do you round the number 54 to the nearest ten?

Back

To round 54 to the nearest ten, look at the last digit (4). Since 4 is less than 5, round down to 50.

Front

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

Back

Rounding a number to the nearest hundred means adjusting the number to the closest multiple of one hundred. If the last two digits are 50 or more, round up; if they're less than 50, round down.

Front

How do you round the number 93 to the nearest ten?

Back

To round 93 to the nearest ten, look at the last digit (3). Since 3 is less than 5, round down to 90.

Front

What is the result of rounding 715 to the nearest hundred?

Back

When rounding 715 to the nearest hundred, look at the last two digits (15). Since 15 is less than 50, round down to 700.

Front

How do you round the number 212 to the nearest hundred?

Back

To round 212 to the nearest hundred, look at the last two digits (12). Since 12 is less than 50, round down to 200.

Front

What is the result of rounding 87 to the nearest hundred?

Back

When rounding 87 to the nearest hundred, look at the last two digits (87). Since 87 is greater than 50, round up to 100.

Front

What is the rule for rounding numbers?

Back

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

Front

Why is rounding important in mathematics?

Back

Rounding is important because it simplifies numbers, making them easier to work with, especially in estimation and when dealing with large numbers.

Front

Can you give an example of rounding a number to the nearest ten?

Back

Sure! For example, rounding 67 to the nearest ten: the last digit is 7, which is 5 or more, so round up to 70.