Rounding

Front

What is rounding in mathematics?

Back

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

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CCSS.3.NBT.A.1

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Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or greater, round up; if it is less than 5, round down.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the result of rounding 149 to the nearest hundred?

Back

149 rounds to 100.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the units digit. If it 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

What is the result of rounding 76 to the nearest ten?

Back

76 rounds to 80.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

If a number is exactly halfway between two rounding options, how do you decide which way to round?

Back

If a number is exactly halfway, the common convention is to round up to the nearest even number.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the result of rounding 276 to the nearest hundred?

Back

276 rounds to 300.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the result of rounding 42 to the nearest ten?

Back

42 rounds to 40.

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CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What does it mean when two people give different rounding answers for the same number?

Back

It means they are rounding to different place values (e.g., one to the nearest ten and the other to the nearest hundred).

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the rounding rule for numbers ending in 5?

Back

Numbers ending in 5 are typically rounded up to the next whole number when rounding to the nearest even number.

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CCSS.3.NBT.A.1

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