Decide if the answer is reasonable or unreasonable by rounding the numbers and estimating the answer. If the answer is not reasonable, find the correct answer.10.6 ÷ 1.19 = 0.891
A. Unreasonable, should be 8.91
B. Reasonable
C. Unreasonable, should be 0.0891
D. Unreasonable, should be 8.9
Answer: A
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Which of the following best exemplifies the use of reformulation to do computational estimation?
a. Estimating the answer to 99 times 103 by rounding both numbers to 100 and then squaring 100. b. Given the task of simplifying 3x + 2 - 5x, grouping the like terms together first and then obtaining -2x + 2 c. Using the conventional long division algorithm to find the quotient 72/33 d. Using conventional algorithms when asked to do mental computation
Round the amount to the nearest cent.$49.3442
A. $49.35 B. $49.34 C. $49.33 D. $49.3
Find the perimeter of the figure.
A. 40 m B. 39 m C. 36 m D. 38 m
Provide an appropriate response.A student tries to solve 
= 
+ 10 by squaring both sides and gets 
Why is this not correct?
What will be an ideal response?