|
|
| (10 intermediate revisions by 7 users not shown) |
| Line 1: |
Line 1: |
| − | <math>1.</math> Margie bought <math>3</math> apples at a cost of <math>50</math> cents each. She paid with a <math>5</math>-dollar bill. How much change did Margie receive?
| + | * [[2011 AMC 8 Problems]] |
| | + | * [[2011 AMC 8 Answer Key]] |
| | + | ** [[2011 AMC 8 Problems/Problem 1]] |
| | + | ** [[2011 AMC 8 Problems/Problem 2]] |
| | + | ** [[2011 AMC 8 Problems/Problem 3]] |
| | + | ** [[2011 AMC 8 Problems/Problem 4]] |
| | + | ** [[2011 AMC 8 Problems/Problem 5]] |
| | + | ** [[2011 AMC 8 Problems/Problem 6]] |
| | + | ** [[2011 AMC 8 Problems/Problem 7]] |
| | + | ** [[2011 AMC 8 Problems/Problem 8]] |
| | + | ** [[2011 AMC 8 Problems/Problem 9]] |
| | + | ** [[2011 AMC 8 Problems/Problem 10]] |
| | + | ** [[2011 AMC 8 Problems/Problem 11]] |
| | + | ** [[2011 AMC 8 Problems/Problem 12]] |
| | + | ** [[2011 AMC 8 Problems/Problem 13]] |
| | + | ** [[2011 AMC 8 Problems/Problem 14]] |
| | + | ** [[2011 AMC 8 Problems/Problem 15]] |
| | + | ** [[2011 AMC 8 Problems/Problem 16]] |
| | + | ** [[2011 AMC 8 Problems/Problem 17]] |
| | + | ** [[2011 AMC 8 Problems/Problem 18]] |
| | + | ** [[2011 AMC 8 Problems/Problem 19]] |
| | + | ** [[2011 AMC 8 Problems/Problem 20]] |
| | + | ** [[2011 AMC 8 Problems/Problem 21]] |
| | + | ** [[2011 AMC 8 Problems/Problem 22]] |
| | + | ** [[2011 AMC 8 Problems/Problem 23]] |
| | + | ** [[2011 AMC 8 Problems/Problem 24]] |
| | + | ** [[2011 AMC 8 Problems/Problem 25]] |
| | | | |
| − | <math> \textbf{(A)}$1.50\qquad\textbf{(B)}$2.00\qquad\textbf{(C)}$2.50\qquad\textbf{(D)}$3.00\qquad\textbf{(E)}$3.50 </math>
| + | == See also == |
| − | | + | {{Succession box| |
| − | <math>2.</math> Karl's rectangular vegetable garden is <math>20</math> by <math>45</math> feet, and Makenna's is <math>25</math> by <math>40</math> feet. Which garden is larger in area?
| + | |header=2011 AMC 8 ([[2011 AMC 8 Problems|Problems]]) |
| − | | + | |before=[[2010 AMC 8]] |
| − | <math>\textbf{(A)}</math> Karl's garden is larger by 100 square feet.
| + | |title=[[AMC 8]] |
| − | <math>\textbf{(B)}</math> Karl's garden is larger by 25 square feet.
| + | |after=[[2012 AMC 8]]}} |
| − | <math>\textbf{(C)}</math> The gardens are the same size.
| + | * [[Mathematics competitions]] |
| − | <math>\textbf{(D)}</math> Makenna's garden is larger by 25 square feet.
| + | * [[Mathematics competition resources]] |
| − | <math>\textbf{(E)}</math> Makenna's garden is larger by 100 square feet.
| + | * [[Math books]] |
| − | <math>3.</math>
| |
| − | <math>4.</math> Here is a list of the numbers of fish that Tyler caught in nine outings last summer: <cmath>2,0,1,3,0,3,3,1,2.</cmath> Which statement about the mean, median, and mode is true?
| |
| − | | |
| − | <math>\textbf{(A)} \text{median} < \text{mean} < \text{mode} \qquad \textbf{(B)} \text{mean} < \text{mode} < \text{median} \\ \\ \textbf{(C)} \text{mean} < \text{median} < \text{mode} \qquad \textbf{(D)} \text{median} < \text{mode} < \text{mean} \\ \\ \textbf{(E)} \text{mode} < \text{median} < \text{mean}</math>
| |
| − | <math>5.</math> [quote="Mrdavid445"]What time was it <math>2011</math> minutes after midnight on January 1, 2011?
| |
| − | | |
| − | <math>\textbf{(A)} \text{January 1 at 9:31PM}</math>
| |
| − | <math>\textbf{(B)} \text{January 1 at 11:51PM}</math>
| |
| − | <math>\textbf{(C)} \text{January 2 at 3:11AM}</math>
| |
| − | <math>\textbf{(D)} \text{January 2 at 9:31AM}</math>
| |
| − | <math>\textbf{(E)} \text{January 2 at 6:01PM}</math>[/quote]
| |
| − | <math>6.</math>In a town of 351 adults, every adult owns a car, motorcycle, or both. If 331 adults own cars and 45 adults own motorcycles, how many of the car owners do not own a motorcycle?
| |
| − | | |
| − | <math> \textbf{(A)} 20 \qquad\textbf{(B)} 25 \qquad\textbf{(C)} 45 \qquad\textbf{(D)} 306 \qquad\textbf{(E)} 351</math>
| |
| − | <math>7.</math>
| |
| − | <math>8.</math> Bag A has three chips labeled 1, 3, and 5. Bag B has three chips labeled 2, 4, and 6. If one chip is drawn from each bag, how many different values are possible for the sum of the two numbers on the chips?
| |
| − | | |
| − | <math> \textbf{(A)} 4 \qquad\textbf{(B)} 5 \qquad\textbf{(C)} 6 \qquad\textbf{(D)} 7 \qquad\textbf{(E)} 9 </math>
| |
| − | <math>9.</math>
| |
| − | <math>10</math> The taxi fare in Gotham City is <math>$</math>2.40 for the first <math>\frac12</math> mile and additional mileage charged at the rate <math>$</math> 0.20 for each additional 0.1 mile. You plan to give the driver a <math>$</math>2 tip. How many miles can you ride for <math>$</math>10?
| |
| − | <math>11</math>
| |
| − | <math>12</math> Angie, Bridget, Carlos, and Diego are seated at random around a square table, one person to a side. What is the probability that Angie and Carlos are seated opposite each other?
| |
| − | | |
| − | <math> \textbf{(A)} \frac14 \qquad\textbf{(B)} \frac13 \qquad\textbf{(C)} \frac12 \qquad\textbf{(D)} \frac23 \qquad\textbf{(E)} \frac34 </math>
| |
| − | <math>13</math>
| |
| − | <math>14</math>There are <math>270</math> students at Colfax Middle School, where the ratio of boys to girls is <math>5 : 4</math>. There are <math>180</math> students at Winthrop Middle School, where the ratio of boys to girls is <math>4 : 5</math>. The two schools hold a dance and all students from both schools attend. What fraction of the students at the dance are girls?
| |
| − | | |
| − | <math> \textbf{(A)} \dfrac7{18} \qquad\textbf{(B)} \dfrac7{15} \qquad\textbf{(C)} \dfrac{22}{45} \qquad\textbf{(D)} \dfrac12 \qquad\textbf{(E)} \dfrac{23}{45} </math>
| |
