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10 Cards in this Set
- Front
- Back
- 3rd side (hint)
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1) At Joe's Restaurant, one-fourth of the patrons are male and one-fifth of the patrons are from out of town. What proportion would you expect to be male and out of town?
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1/20
If one-fourth of the patrons are male, then you would expect one-fourth of the out-of-town patrons to be male. One fourth of one-fifth is 1/20. |
1/5
1/10 1/20 1/25 1/50 |
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2) There are 112 male and 78 females working at a hospital. What percentage of the hospitals workforce is female?
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41%
Add the number of men and women to get the total number: 190. The number of women, 78, so divide 78 into 190 to get .4105. Then multiply by 100 to convert it to a percentage and you have 41%. |
22%
32% 38% 41% 78% |
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3) What is the estimated product when 620 and 374 are rounded to the nearest hundred and multiplied?
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240,000
620 is rounded to 600; 374 is rounded to 400. 600 * 400 = 240,000. |
12,000
24,000 60,000 120,000 240,000 |
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4) If a patient doesn't receive treatment for a certain injury within 2 hours after injury, the patient's chance of survival starts decreasing by 15% each hour. If no treatment has been given within 4 hours after injury, roughly, what chance of survival will the patient have?
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72%
At the end of two hours, the patient still has a 100% chance of survival. After three hours, he has an 85% of survival, or 0.85. After four hours, he has an 85% of the 85% he had at the end of three hours: 0.85 * 0.85 = 72.25% chance of survival. |
70%
72% 75% 77% 80% |
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5) William is from England and is visiting the United States. On his trip he visits Texas and notices that it is very hot. He looks at a thermometer and it reads 95 degrees fahrenheit. William wants to know what this converts to in Celcius?
Assume C = (F- 32) / 1.8 |
35 degrees C
Substituting 95 for F in the equation yields C = (95 - 32) = 63 / 1.8 = 35 degrees C. |
30 degrees C
35 degrees C 40 degrees C 45 degrees C 50 degrees C |
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6) A student scores 74, 87, 68, 63, 76 on his last five exams. His teacher will drop the lowest grade to compute the student's average. What is the students average in the class?
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76.3%
The teacher will drop the 63, and only count the four best scores. These are 74, 87, 68, and 76 . To find the average, add the 4 numbers and divide the sum by 4. |
76.3%
79.4% 84.9% 89.4% 68.2% |
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7) 21/4 + 63/8
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85/8
Convert the 1/4 to 2/8 and then add 2/8 to 3/8 to get 5/8. Finally add 6 + 2 and you have 85/8 |
8
83/8 85/8 9 |
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8) A world map has a scale of 1/4 of an inch equals 250 miles. You measure the distance between New York, NY and Los Angeles, California and it equals 3 inches. What is the real distance between New York and LA?
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3,000 miles
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2,500 miles
2,750 miles 2,800 miles 3,000 miles 3,250 miles |
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9) Of 1,000 dogs, 72% are male. Among the males, 3 out of 5 were over the age 5. How many of the dogs were males age 5 or older?
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432
First multiply 1000 * .72 to find out how many dogs are male. This results in 720 male dogs of which 3/5 are over the age of 5. Therefore, multiply 720 * 3/5 (or .6) which results in 432. |
312
432 468 512 720 |
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10) There are 78 female and 54 male patrons at a local diner. What percentage of the diner's patrons are female?
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59%
Add 78 to 54 to get 132 total patrons, then divide the number of females into the total number of patrons. Therefore, 78/132 = .5909 = 59% |
37%
41% 52% 59% 67% |
