Question

Which would be the most appropriate way to estimate -6.1(0.22)? Check all that apply.

1.Use rounding to get -6(0.2), and then multiply.
2.Use compatible numbers, such as -6(0.5), and then multiply.
3.Use the benchmark numbers -6 and 1, and then multiply.
4.Use front-end estimation to get -6(0.2), and then multiply.
5.Round the factors to the nearest whole number, and then multiply.

the numbers are a b d c e just so ya know.

Answer 1

Estimate -6.1(0.22)

Answer:

Use rounding to get -6(0.2), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Round the factors to the nearest whole number, and then multiply.

Explanation:

Actual answer:

-6.1(0.22) = -1.342

Estimate answer:

-6 (.2) = 1.2