Rounding

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.

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CCSS.3.NBT.A.1

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Front

What does it mean to round to the nearest hundred?

Back

Rounding to the nearest hundred means adjusting a number to the closest multiple of 100. If the last two digits are 50 or more, round up; if they are less than 50, round down.

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Front

How do you round the number 678 to the nearest hundred?

Back

To round 678 to the nearest hundred, look at the tens digit (7). Since it is 5 or more, round up to 700.

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Front

Which number rounds to 400 when rounded to the nearest hundred?

Back

The number 362 rounds to 400 when rounded to the nearest hundred because the tens digit (6) is 5 or more.

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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 10. 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 699 to the nearest ten?

Back

To round 699 to the nearest ten, look at the units digit (9). Since it is 5 or more, round up to 700.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round the number 678 to the nearest ten?

Back

To round 678 to the nearest ten, look at the units digit (8). Since it is 5 or more, round up to 680.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round the number 507 to the nearest ten?

Back

To round 507 to the nearest ten, look at the units digit (7). Since it is 5 or more, round up to 510.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the rule for rounding numbers?

Back

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

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CCSS.3.NBT.A.1

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Front

What is the difference between rounding up and rounding down?

Back

Rounding up means increasing the rounding place by one, while rounding down means keeping the rounding place the same.

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CCSS.3.NBT.A.1

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