SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
CLEP General Mathematics: Percentage And Measurement
Start Test
Study First
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. The extra digit protects the answer from
The effects of multiple rounding
Five hundredths of an inch (one-half of one tenth of an inch)
'percent' (per 100)
The numerator of the fraction thus formed indicates
2. 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
Significant Number
Hundredths
precision and accuracy of the measurements
The effects of multiple rounding
3. In order to multiply or divide two approximate numbers having an equal number of significant digits
The ordinary micrometer is capable of measuring accurately to
Round the answer to the same number of significant digits as are shown in one of the original numbers. If one of the original factors has more significant digits than the other - round the more accurate number before multiplying. It should be rounded
Whole numbers
Hundredths
4. 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.
Significant Number
Micrometers and Verbiers
To change a percent to a decimal
the size of the smallest division on the scale
5. Percentage divided by base
FRACTIONAL PERCENTS 1% of 840
equals rate
The concepts of precision and accuracy
A sum or difference
6. The precision of a sum is no greater than
The precision of the least precise addend
Percentage (p)
To find the rate when the base and percentage are known.
All numbers should first be rounded off to the order of the least precise number
7. How much to round off must be decided in terms of
Percent of error
Relative Error
precision and accuracy of the measurements
0
8. How many hundredths we have - and therefore it indicates 'how many percent' we have.
The location of the decimal point
The numerator of the fraction thus formed indicates
Less precise number compared
6% of 50 = ?
9. Before adding or subtracting approximate numbers - they should be
Percentage
rounded to the same degree of precision
Probable error
Rate times base equals percentage.
10. 0.01 X 840 = 8.40 Therefore - 1/4% of 840 = 8.40 x 1/4 = 2.10
FRACTIONAL PERCENTS 1% of 840
The concepts of precision and accuracy
find 1 percent of the number and then find the fractional part.
precision and accuracy of the measurements
11. 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
The denominator of the fraction indicates the degree of precision
0.05 inch (five hundredths is one-half of one tenth).
All repeating decimals to be added should be rounded to this level
Significant Number
12. To find the rate when the percentage and base are known
find 1 percent of the number and then find the fractional part.
The location of the decimal point
Divide the percentage by the base. Write the quotient in the decimal form first - and finally as a percent.
Case I-To find the percentage when the base and rate are known. Case II-To find the rate when the base andpercentage are known. Case III-To find the base when the percentage and rate are known.
13. It is important to realize that precision refers to
6% of 50 = ?
Whole numbers
the size of the smallest division on the scale
All repeating decimals to be added should be rounded to this level
14. Deals with the group of decimal fractions whose denominators are 100-that is fractions of two decimal places.
To find the rate when the base and percentage are known.
Round the result to the same number of significant digits as are shown in the less accurate of the original factors.
All repeating decimals to be added should be rounded to this level
Percentage
15. A larger number of decimal places means a smaller
Percentage
Probable error
Rate (r)
divide the percentage by the rate
16. Is the whole on which the rate operates.
rounded to the same degree of precision
the size of the smallest division on the scale
one half the size of the smallest division on the measuring instrument
Base (b)
17. The accuracy of a measurement is often described in terms of the number of
Significant digits used in expressing it.
rounded to the same degree of precision
The precision of the least precise addend
The effects of multiple rounding
18. It is possible to round off a repeating decimal at any desired point - the degree of precision desired should be determined and:
All repeating decimals to be added should be rounded to this level
To find the percentage when the base and rate are known.
find 1 percent of the number and then find the fractional part.
Percentage
19. 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
Percentage
The location of the decimal point
To change a decimal to percent - move the decimal point two places to the right and annex the percent sign.
Rate times base equals percentage.
20. 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
Relative Error
Significant Number
0.05 inch (five hundredths is one-half of one tenth).
0
21. FRACTIONAL PERCENTS.-A fractional percent represents a part of 1 percent.
The precision of the least precise addend
find 1 percent of the number and then find the fractional part.
Percent of error
Rate (r)
22. The precision of a number resulting from measurement depends upon
Percentage
the number of decimal places
0.05 inch (five hundredths is one-half of one tenth).
The precision of the least precise addend
23. The 'of' has the same meaning as it does in fractional examples - such as 1/4 of 16 = ?
Probable error
All repeating decimals to be added should be rounded to this level
Least precise number in the group to be combined
6% of 50 = ?
24. 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:
Significant Number
To change a decimal to percent - move the decimal point two places to the right and annex the percent sign.
To change a percent to a decimal
The denominator of the fraction indicates the degree of precision
25. 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.
Least precise number in the group to be combined
Measurement Accuracy
To find the percentage when the base and rate are known.
Significant Number
26. The more precise numbers are all rounded to the precision of the
The numerator of the fraction thus formed indicates
Least precise number in the group to be combined
Begin with the first nonzero digit (counting from left to right) and end with the last digit
The location of the decimal point
27. The maximum probable error is
Percentage
one half the size of the smallest division on the measuring instrument
Micrometers and Verbiers
Five hundredths of an inch (one-half of one tenth of an inch)
28. Is the number of hundredths parts taken. This is the number followed by the percent sign.
Base (b)
decimals
Rate (r)
FRACTIONAL PERCENTS 1% of 840
29. To to find the percentage of a number when the base and rate are known.
Rate times base equals percentage.
Percent of error
equals rate
Measurement Accuracy
30. The probable error in any measurement is how precisely the instrument is marked - The precision of a measurement depends upon
one half the size of the smallest division on the measuring instrument
the size of the smallest division on the scale
Begin with the first nonzero digit (counting from left to right) and end with the last digit
divide the percentage by the rate
31. Relative error is usually expressed as
Five hundredths of an inch (one-half of one tenth of an inch)
0
Percent of error
Round the result to the same number of significant digits as are shown in the less accurate of the original factors.
32. Closely associated with the study of decimals is a measuring instrument known as a micrometer.
Micrometers and Verbiers
To find the percentage when the base and rate are known.
Round the result to the same number of significant digits as are shown in the less accurate of the original factors.
The numerator of the fraction thus formed indicates
33. It can also be shown that the precision of a difference is no greater than the all numbers should first be rounded off to
To change a percent to a decimal
Percentage (p)
Less precise number compared
Probable error and the quantity being measured
34. There are three cases that usually arise in dealing with percentage - as follows:
Rate times base equals percentage.
Significant digits used in expressing it.
0
Case I-To find the percentage when the base and rate are known. Case II-To find the rate when the base andpercentage are known. Case III-To find the base when the percentage and rate are known.
35. Can never be more precise than the least precise number in the calculation.
Probable error
A sum or difference
To change a decimal to percent - move the decimal point two places to the right and annex the percent sign.
equals rate
36. 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).
equals rate
All repeating decimals to be added should be rounded to this level
To find the rate when the base and percentage are known.
precision and accuracy of the measurements
37. Form the basis for the rules which govern calculation with approximate numbers (numbers resulting from measurement).
The concepts of precision and accuracy
Least precise number in the group to be combined
Significant digits used in expressing it.
All repeating decimals to be added should be rounded to this level
38. To flnd the bue when the rate and percentage are known
divide the percentage by the rate
find 1 percent of the number and then find the fractional part.
Significant Number
Hundredths
39. A rule that is often used states that the significant digits in a number
To change a percent to a decimal
Probable error
Base (b)
Begin with the first nonzero digit (counting from left to right) and end with the last digit
40. One-thousandth of an inch. One-thousandth of an inch is about the thickness of a human hair or a thin sheet of paper.
The ordinary micrometer is capable of measuring accurately to
Percentage
To find the percentage when the base and rate are known.
the number of decimal places
41. The maximum probable error is found when the denominator of the fraction expressing the error ratio is divided into the numerator or
Less precise number compared
0.05 inch (five hundredths is one-half of one tenth).
Probable error divided by measured value = a decimal is obtained.
To find the rate when the base and percentage are known.
42. Depends upon the relative size of the probable error when compared with the quantity being measured.
Divide the percentage by the base. Write the quotient in the decimal form first - and finally as a percent.
equals rate
rounded to the same degree of precision
Measurement Accuracy
43. To add or subtract numbers of different orders
All numbers should first be rounded off to the order of the least precise number
decimals
Whole numbers
To change a decimal to percent - move the decimal point two places to the right and annex the percent sign.
44. After performing the' multiplication or division
The location of the decimal point
rounded to the same degree of precision
The effects of multiple rounding
Round the result to the same number of significant digits as are shown in the less accurate of the original factors.
45. Common fractions are changed to percent by flrst expressmg them as
Least precise number in the group to be combined
decimals
Relative Values
Whole numbers
46. 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.
the size of the smallest division on the scale
rounded to the same degree of precision
Relative Error
Probable error and the quantity being measured
47. Is the part of the base determined by the rate.
Percentage (p)
Probable error divided by measured value = a decimal is obtained.
the number of decimal places
All numbers should first be rounded off to the order of the least precise number
48. Since hundredths were used so frequently - the decimal point was dropped and the symbol % was placed after the number and read
Warning
: Invalid argument supplied for foreach() in
/var/www/html/basicversity.com/show_quiz.php
on line
183
49. 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.
Probable error divided by measured value = a decimal is obtained.
Round the answer to the same number of significant digits as are shown in one of the original numbers. If one of the original factors has more significant digits than the other - round the more accurate number before multiplying. It should be rounded
0
Micrometers and Verbiers
50. 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.
Hundredths
Less precise number compared
Rate (r)
Whole numbers