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






2. 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:






3. It can also be shown that the precision of a difference is no greater than the all numbers should first be rounded off to






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






5. It is important to realize that precision refers to






6. Relative error is usually expressed as






7. 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).






8. Percent is used in discussing






9. Relative error is the ratio between the _________________. This ratio is simply the fraction formed by using the probable error as the numerator and the measurement itself as the denominator.






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






11. 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.






12. 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






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






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






15. 0.01 X 840 = 8.40 Therefore - 1/4% of 840 = 8.40 x 1/4 = 2.10






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






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


18. Before adding or subtracting approximate numbers - they should be






19. After performing the' multiplication or division






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






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






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






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






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






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






26. A larger number of decimal places means a smaller






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






28. 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.






29. The maximum probable error is






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






31. 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






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






33. 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






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






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






36. Is the whole on which the rate operates.






37. Can never be more precise than the least precise number in the calculation.






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






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






40. 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.






41. The precision of a sum is no greater than






42. The extra digit protects the answer from






43. Percentage divided by base






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






45. 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






46. 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






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






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






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






50. 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.