Rounding to the Nearest 10

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 the number to the nearest specified place value.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

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 less than 5, round down.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round the number 486 to the nearest ten?

Back

To round 486 to the nearest ten, look at the last digit (6). Since 6 is 5 or more, round up to 490.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the result of rounding 79 to the nearest ten?

Back

When rounding 79 to the nearest ten, the last digit is 9. Since 9 is 5 or more, round up to 80.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round the number 82 to the nearest ten?

Back

To round 82 to the nearest ten, look at the last digit (2). Since 2 is less than 5, round down to 80.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the nearest ten to the number 17?

Back

The nearest ten to 17 is 20, as the last digit (7) is 5 or more, prompting a round up.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round the number 56 to the nearest ten?

Back

To round 56 to the nearest ten, look at the last digit (6). Since 6 is 5 or more, round up to 60.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

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.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

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

Back

Sure! For example, rounding 34 to the nearest ten: the last digit is 4, which is less than 5, so round down to 30.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What happens when you round a number that is exactly halfway between two multiples of ten?

Back

When a number is exactly halfway between two multiples of ten (e.g., 25, 35), it is typically rounded up to the higher multiple of ten.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3