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, while keeping its value close to what it was.

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 the number 43.827 to the nearest hundredth?

Back

Look at the third decimal place (7). Since it is 5 or greater, round the second decimal place (2) up to 3, resulting in 43.83.

Tags

CCSS.5.NBT.A.4

Front

What does it mean to round to the nearest tenth?

Back

Rounding to the nearest tenth means adjusting a number to one decimal place, where the second decimal place determines whether to round up or down.

Tags

CCSS.5.NBT.A.4

Front

How do you round the number 47.941 to the nearest tenth?

Back

Look at the second decimal place (4). Since it is less than 5, keep the first decimal place (9) the same, resulting in 47.9.

Tags

CCSS.5.NBT.A.4

Front

What is the rule for rounding numbers?

Back

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

How do you round the number 72.178 to the nearest hundredth?

Back

Look at the third decimal place (8). Since it is 5 or greater, round the second decimal place (7) up to 8, resulting in 72.18.

Tags

CCSS.5.NBT.A.4

Front

What is the result of rounding 5.592 to the nearest hundredth?

Back

Look at the third decimal place (2). Since it is less than 5, keep the second decimal place (9) the same, resulting in 5.59.

Tags

CCSS.5.NBT.A.4

Front

How do you round the number 1.823 to the nearest whole number?

Back

Look at the first decimal place (8). Since it is 5 or greater, round the whole number (1) up to 2.

Tags

CCSS.5.NBT.A.4

Front

What is the difference between rounding up and rounding down?

Back

Rounding up increases the last retained digit by one, while rounding down keeps the last retained digit the same.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3