Rounding Decimals

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 reducing the number of digits while keeping the value close to the original number.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What does it mean to round to the nearest hundredth?

Back

Rounding to the nearest hundredth means adjusting a number to two decimal places, where the third decimal place determines whether to round up or down.

Tags

CCSS.5.NBT.A.4

Front

How do you round a number up?

Back

To round a number up, if the digit immediately after the place you are rounding to is 5 or greater, you increase the last digit you are keeping by one.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round a number down?

Back

To round a number down, if the digit immediately after the place you are rounding to is less than 5, you keep the last digit you are keeping the same and drop all digits after it.

Tags

CCSS.4.NBT.A.3

CCSS.3.NBT.A.1

Front

What is the result of rounding 43.827 to the nearest hundredth?

Back

43.83

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CCSS.5.NBT.A.4

Front

What is the result of rounding 3.457 to the nearest tenth?

Back

3.5

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CCSS.5.NBT.A.4

Front

What is the result of rounding $278.49 to the nearest hundred dollars?

Back

$300.00

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CCSS.5.NBT.A.4

Front

What is the result of rounding 0.678 to the nearest tenth?

Back

0.7

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CCSS.5.NBT.A.4

Front

What is the result of rounding 23.542 to the nearest tenth?

Back

23.5

Tags

CCSS.5.NBT.A.4

Front

What is the significance of the digit '5' in rounding?

Back

The digit '5' serves as a threshold in rounding; if the digit after the place you are rounding to is 5 or greater, you round up.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3