Front

What is estimation?

Back

Estimation is a method used to find an approximate value or answer, rather than an exact one.

Front

Why do we use estimation?

Back

We use estimation to make quick calculations, check the reasonableness of answers, and simplify complex problems.

Tags

CCSS.5.NBT.B.7

Front

What does it mean to round a number?

Back

Rounding a number means adjusting it to the nearest specified place value, such as the nearest ten or hundred.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round 724 to the nearest hundred?

Back

You round 724 to 700 because 724 is closer to 700 than to 800.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

How do you round 99 to the nearest ten?

Back

You round 99 to 100 because 99 is closer to 100 than to 90.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the estimated total of 44 and 62?

Back

The estimated total of 44 and 62 is 100.

Front

What is the estimated total of 13 and 28?

Back

The estimated total of 13 and 28 is 40.

Front

Which number rounds to 60?

Back

The number 55 rounds to 60.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the purpose of rounding numbers?

Back

The purpose of rounding numbers is to simplify calculations and make them easier to work with.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is a benchmark number?

Back

A benchmark number is a number that is easy to work with, such as 10, 50, or 100, used for estimation.

Tags

CCSS.4.NBT.B.5