CSU Estimation Questions

Question Description

I’m working on a algebra question and need an explanation and answer to help me learn.

QUESTION 7

There are many ways to perform estimation. Use the following addition problem to demonstrate (a) front-end, (b) range, and (c) front-end with adjustment:

1591 + 346 + 589 + 163

QUESTION 8

Estimate using the following techniques:

a. 227 x 812 (use range)

b. 51 x 212 (use compatible numbers)

c. 3112 divided by 62 (use compatible numbers)

QUESTION 9

If you have more than two numbers and the numbers are close in value, it may be useful to use cluster estimation. Use this type of estimation for the following:

(a) 789 + 810 + 792

(b) 59 x 61 x 58

QUESTION 10

Nicole multiplied 3472 and 259 on her calculator and she wrote down the answer of 89,248. How can you see immediately using estimation that she made an error? Can you see how she made the error?

Explanation & Answer:

4 Questions

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