Rounding to the nearest ten

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler or to make it easier to work with, typically by increasing or decreasing it to the nearest specified place value.

Front

What does it mean to round to the nearest ten?

Back

Rounding to the nearest ten means adjusting a number to the closest multiple of ten. If the last digit is 5 or more, round up; if it is 4 or less, round down.

Front

How do you round the number 38 to the nearest ten?

Back

To round 38 to the nearest ten, look at the last digit (8). Since 8 is greater than 5, round up to 40.

Front

How do you round the number 65 to the nearest ten?

Back

To round 65 to the nearest ten, look at the last digit (5). Since it is 5, round up to 70.

Front

How do you round the number 94 to the nearest ten?

Back

To round 94 to the nearest ten, look at the last digit (4). Since 4 is less than 5, round down to 90.

Front

How do you round the number 47 to the nearest ten?

Back

To round 47 to the nearest ten, look at the last digit (7). Since 7 is greater than 5, round up to 50.

Front

How do you round the number 21 to the nearest ten?

Back

To round 21 to the nearest ten, look at the last digit (1). Since 1 is less than 5, round down to 20.

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 is less than 5, round down.

Front

What is a multiple of ten?

Back

A multiple of ten is any number that can be expressed as 10 times an integer, such as 10, 20, 30, 40, etc.

Front

Why is rounding important in mathematics?

Back

Rounding is important because it simplifies numbers, making calculations easier and helping to estimate values quickly.