Questions: Estimate each difference by rounding. 1. 94 - 75 2. 785 - 68

Estimate each difference by rounding. 1. 94 - 75 2. 785 - 68
Transcript text: Estimate each difference by rounding. 1. $\begin{array}{r}94 \\ -75 \\ \hline\end{array}$ 2. $\begin{array}{r}785 \\ -\quad 68 \\ \hline\end{array}$
failed

Solution

failed
failed

Solution Steps

Solution Approach
  1. To estimate the difference between 94 and 75, round each number to the nearest ten and then subtract the rounded values.
  2. To estimate the difference between 785 and 68, round each number to the nearest ten and then subtract the rounded values.
Step 1: Round Each Number to the Nearest Ten

For the first problem, we have the numbers 94 and 75. We round each number to the nearest ten:

  • \( 94 \) rounds to \( 90 \)
  • \( 75 \) rounds to \( 80 \)

For the second problem, we have the numbers 785 and 68. We round each number to the nearest ten:

  • \( 785 \) rounds to \( 780 \)
  • \( 68 \) rounds to \( 70 \)
Step 2: Subtract the Rounded Values

For the first problem, subtract the rounded values: \[ 90 - 80 = 10 \]

For the second problem, subtract the rounded values: \[ 780 - 70 = 710 \]

Final Answer

\(\boxed{10}\)

Was this solution helpful?
failed
Unhelpful
failed
Helpful

Questions asked by other users

failedAnswered
Question 9 of 10 True or false? A function assigns each value of the dependent variable to more than one value of the independent variable. A. True B. False SUBMIT
failedAnswered
In a study of helicopter usage and patient survival, among the 47,773 patients transported by helicopter, 260 of them left the treatment center against medical advice, and the other 47,513 did not leave against medical advice. If 40 of the subjects transported by helicopter are randomly selected without replacement, what is the probability that none of them left the treatment center against medical advice?
failedAnswered
Information stored in long-term memory has no known organization. duration. importance. source.
failedAnswered
Select all that apply Which of the following antibiotics affect the integrity of the cell wall of bacteria, thereby making them susceptible to lysis? Tetracycline Cephalosporin Penicillin Erythromycin
failedAnswered
The donor concentration in a sample of n-type silicon is increased by a factor of 100. The shift in the position of the Fermi level at 300 K, assuming the sample to non degenerate is meV.