Which statements are true about the estimation of decimal products? Check all that apply.

Question

Estimation gives an approximate answer.
Estimation always results in a product greater than the exact answer.
Estimation always results in a product less than the exact answer.
Estimation can be done by rounding each decimal to the nearest whole number.

Answer 1

Let's evaluate each statement regarding the estimation of decimal products:

1. Estimation gives an approximate answer. - True: Estimation is intended to provide a quick, rough calculation, which can help in verifying the reasonableness of a more precise answer.

2. Estimation always results in a product greater than the exact answer. - False: Estimation can result in a product that is greater, less than, or equal to the exact answer depending on the numbers and how they are rounded.

3. Estimation always results in a product less than the exact answer. - False: Similar to the previous statement, estimation can produce results that vary in relation to the exact answer.

4. Estimation can be done by rounding each decimal to the nearest whole number. - True: Rounding decimals to the nearest whole number is one common method to perform estimation for products.

Based on this analysis, the true statements are:

• Estimation gives an approximate answer.
• Estimation can be done by rounding each decimal to the nearest whole number.