Rounding Decimals

Front

What is rounding?

Back

Rounding is the process of adjusting the value of a number to make it simpler and easier to work with, while keeping it close to the original value.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What does it mean to round to the nearest whole number?

Back

Rounding to the nearest whole number means adjusting a decimal number to the closest whole number. If the decimal is 0.5 or higher, round up; if it's less than 0.5, round down.

Tags

CCSS.5.NBT.A.4

Front

Round 3.156 to the nearest whole number.

Back

3

Tags

CCSS.5.NBT.A.4

Front

What is estimating in math?

Back

Estimating is finding a number that is close enough to the exact amount, often used to make calculations easier.

Front

Estimate 9.22 - 3.88.

Back

5

Front

Estimate 8.21 + 9.88.

Back

18

Front

What does it mean to round to the nearest hundredth?

Back

Rounding to the nearest hundredth means adjusting a decimal number to two places after the decimal point. Look at the third decimal place to decide whether to round up or down.

Tags

CCSS.5.NBT.A.4

Front

Round 8.5435 to the nearest hundredth.

Back

8.54

Tags

CCSS.5.NBT.A.4

Front

What is the purpose of rounding numbers?

Back

Rounding numbers makes them easier to work with, especially in estimation and mental math.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is a decimal?

Back

A decimal is a fraction expressed in a special form, where the denominator is a power of ten, and it is represented with a decimal point.