Front

What is estimation in mathematics?

Back

Estimation is a method used to find an approximate value that is close to the actual value, often used when exact calculations are not necessary.

Front

How do you round a number to the nearest ten?

Back

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

Front

Estimate the product of 49 x 27 by rounding.

Back

Round 49 to 50 and 27 to 30. The estimated product is 50 x 30 = 1,500.

Front

What is the closest ten to the number 58?

Back

The closest ten to 58 is 60.

Front

What is the best estimate for 37 x 63?

Back

The best estimate is 40 x 60 = 2,400.

Front

How do you estimate the product of two numbers?

Back

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

Front

What is the estimated product of 56 x 76?

Back

The estimated product is 60 x 80 = 4,800.

Front

Round the factors 31 and 19 to estimate their product.

Back

Round 31 to 30 and 19 to 20. The estimated product is 30 x 20 = 600.

Front

What is the purpose of estimation in math?

Back

The purpose of estimation is to make calculations easier and quicker, especially when exact numbers are not needed.

Front

What is a factor in multiplication?

Back

A factor is a number that is multiplied by another number to get a product.