Eureka Math Grade 3 Module 2 Review

Front

What is estimation in mathematics?

Back

Estimation is the process of finding an approximate value that is close to an exact amount, often used to simplify calculations.

Front

How do you round a number to the nearest hundred?

Back

To round a number to the nearest hundred, look at the tens digit. If it is 5 or greater, round up; if it is 4 or less, round down.

Front

What is the estimated total of 347 mL of water consumed over 3 days, rounded to the nearest hundred?

Back

The estimated total is 900 mL.

Front

How do you round a number to the nearest ten?

Back

To round a number to the nearest ten, look at the ones digit. If it is 5 or greater, round up; if it is 4 or less, round down.

Front

What is the estimated total of 257 mL of cleaning solution and 519 mL of water, rounded to the nearest ten?

Back

The estimated total is 780 mL.

Front

How do you find the difference between two weights?

Back

To find the difference, subtract the smaller weight from the larger weight.

Front

If Mr. Hahne carries 37 kg and Mrs. Novicki carries 55 kg, how do you calculate how many more kilograms Mrs. Novicki carries?

Back

Subtract 37 kg from 55 kg to find that Mrs. Novicki carries 18 kg more.

Front

What is the estimated total of 257 mL and 519 mL, rounded to the nearest hundred?

Back

The estimated total is 800 mL.

Front

How do you estimate the sum of two numbers?

Back

To estimate the sum, round each number to a convenient value and then add the rounded numbers.

Front

What is the estimated sum of 386 and 337, rounded to the nearest ten?

Back

The estimated sum is 730.