Rounding and Estimating products

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting a number to make it simpler and 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 estimate a product?

Back

Estimating a product means finding a number that is close to the actual product, often by rounding the numbers before multiplying.

Tags

CCSS.4.NBT.B.5

Front

What is a compatible number?

Back

A compatible number is a number that is easy to work with when estimating calculations, often rounded to make mental math easier.

Front

How do you round the number 321 to the nearest ten?

Back

321 rounded to the nearest ten is 320.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the estimated product of 300 and 50?

Back

The estimated product of 300 and 50 is 15,000.

Tags

CCSS.4.NBT.B.5

Front

When rounding 54 to the nearest ten, what do you get?

Back

54 rounded to the nearest ten is 50.

Tags

CCSS.3.NBT.A.1

CCSS.4.NBT.A.3

Front

What is the purpose of estimating in math?

Back

The purpose of estimating in math is to quickly find an approximate answer without calculating the exact value.

Front

If you see the word 'about' in a math problem, what should you do?

Back

You should estimate the answer.

Front

What is the estimated product of 400 and 60?

Back

The estimated product of 400 and 60 is 24,000.

Tags

CCSS.4.NBT.B.5

Front

How do you find a compatible number for 122?

Back

A compatible number for 122 is 125, as it is close and easy to work with for calculations.

Tags

CCSS.4.NBT.B.6