Estimate the answer by rounding both values to the nearest whole number.
Use a calculator to evaluate $6.61$6.61 + $2.85$2.85 and write the answer below.
What is the difference between the estimate and the actual answer?
Consider the product $1.29\times3.42$1.29×3.42
Add and subtract decimals, with and without digital technologies, and use estimation and rounding to check the reasonableness of answers
Multiply decimals by whole numbers and perform divisions by non-zero whole numbers where the results are terminating decimals, with and without digital technologies