Estimating Products HW

Front

What is estimation in multiplication?

Back

Estimation in multiplication is a method used to find an approximate product by rounding numbers to make calculations easier.

Front

How do you round numbers 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 85 x 94 by rounding.

Back

80 x 90 = 7,200.

Front

What is the estimated product of 27 packs of 42 pencils?

Back

Estimate by rounding: 30 x 40 = 1,200 pencils.

Front

What is the purpose of estimating products?

Back

Estimating products helps to quickly assess the size of a number without calculating the exact answer.

Front

How do you estimate the product of two numbers?

Back

Round each number to a convenient value, then multiply the rounded numbers.

Front

What is the estimated product of 206 x 77?

Back

Round to 200 x 80 = 16,000.

Front

What is a single-digit number?

Back

A single-digit number is any number from 0 to 9.

Front

Do single-digit numbers get rounded?

Back

No, single-digit numbers do not get rounded.

Front

Estimate the total number of cans collected if there are 81 bags with 67 cans each.

Back

Estimate by rounding: 80 x 70 = 5,600 cans.