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CLEP General Mathematics: Percentage And Measurement

Subjects : clep, math, measurement
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. To add or subtract numbers of different orders






2. The more precise numbers are all rounded to the precision of the






3. Experience has shown that the best the average person can do with consistency is to decide whether a measurement is more or less than halfway between marks. The correct way to state this fact mathematically is to say that a measurement made with an i






4. The word 'percent' is derived from Latin. It was originally 'per centum -' which means 'by the hundred.' Thus the statement is often made that 'percent' means






5. There are three cases that usually arise in dealing with percentage - as follows:






6. The probable error in any measurement is how precisely the instrument is marked - The precision of a measurement depends upon






7. It is possible to round off a repeating decimal at any desired point - the degree of precision desired should be determined and:






8. In a number such as 49.30 inches - it is reasonable to assume that the 0 in the hundredths place would not have been recorded at all if it were not a






9. To change a decimal to percent multiply the decimal by 100 and annex the percent sign (%). Since multiplying by 100 has the effect of moving the decimal point two places to the right - the rule is sometimes stated as follows:






10. The base corresponds to the multiplicand - the rate corresponds to the multiplier - and the percentage corresponds to the product...We then divide the product (percentage) by the multiplicand (base) to get the other factor (rate).






11. To flnd the bue when the rate and percentage are known






12. Since hundredths were used so frequently - the decimal point was dropped and the symbol % was placed after the number and read

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13. Is the number of hundredths parts taken. This is the number followed by the percent sign.






14. Deals with the group of decimal fractions whose denominators are 100-that is fractions of two decimal places.






15. Form the basis for the rules which govern calculation with approximate numbers (numbers resulting from measurement).






16. The precision of a sum is no greater than






17. In order to multiply or divide two approximate numbers having an equal number of significant digits






18. Percent is used in discussing






19. How many hundredths we have - and therefore it indicates 'how many percent' we have.






20. After performing the' multiplication or division






21. 0.01 X 840 = 8.40 Therefore - 1/4% of 840 = 8.40 x 1/4 = 2.10






22. One-thousandth of an inch. One-thousandth of an inch is about the thickness of a human hair or a thin sheet of paper.






23. It is important to realize that precision refers to






24. Closely associated with the study of decimals is a measuring instrument known as a micrometer.






25. May be considered as special types of decimals (for example - 4 may be written as 4.00) and thus may be expressed interms of percentage.






26. The accuracy of a measurement is determined by the ________






27. The 'of' has the same meaning as it does in fractional examples - such as 1/4 of 16 = ?






28. Depends upon the relative size of the probable error when compared with the quantity being measured.






29. Can be a significant digit if it is not the first digit in the number because it is a part of the number specifying how many hundredths are in the measurement.






30. A larger number of decimal places means a smaller






31. The maximum probable error is






32. To find the percentage of a number - multiply the base by the rate. The rate must be changed from a percent to a decimal before multiplying can be done.






33. Is the whole on which the rate operates.






34. FRACTIONAL PERCENTS.-A fractional percent represents a part of 1 percent.






35. When a common fraction is used in recording the results of measurement






36. The maximum probable error is found when the denominator of the fraction expressing the error ratio is divided into the numerator or






37. How much to round off must be decided in terms of






38. The precision of a number resulting from measurement depends upon






39. To find the rate when the percentage and base are known






40. Relative error is usually expressed as






41. A rule that is often used states that the significant digits in a number






42. Common fractions are changed to percent by flrst expressmg them as






43. Has no bearing on the accuracy of the number. For example - 1.25 dollars represents exactly the same amount of money as 125 cents. These are equally accurate ways of representing the same quantity - despite the fact that the decimal point is placed d






44. To to find the percentage of a number when the base and rate are known.






45. The accuracy of a measurement is often described in terms of the number of






46. When it is necessary to use a percent in computation - to avoid confusion the number is written in its by first expressing it as a fraction with 100 as the denominator - Since percent means hundredths - any decimal may be changed to percent






47. Percentage divided by base






48. The extra digit protects the answer from






49. Drop the percent sign and divide the number by 100. Mechanically - the decimal point is simply shifted two places to the left and the percent sign is dropped.






50. Is the part of the base determined by the rate.