MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. C) 5 2 C) C) 9 8 C) 25 2 C) 2 1 3

Transcription

1 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Write each mixed number as an improper fraction. ) ) 8 C) 2 2 2) 2 2 2) 2 2 C) 28 ) ) 0 2 C) 8 02 ) ) C) 8 2 ) 8 ) 2 22 C) 2 2 6) ) 6 8 C) Change the improper fraction to a whole or mixed number. ) ) C) 2 8) 8) 8 C) 2 6

2 ) ) 2 C) 0) 0 0) 6 C) 6 2 ) 0 ) C) ) 66 2) 22 2 C) Write the fraction in lowest terms. ) 2 8 ) C) 2 8 ) 6 ) C) ) 60 8 ) 0 C) ) 6 6 6) C) ) ) 28 6 C)

3 8) C) 2 2 8) ) 80 0 ) 22 C) 2 22 Solve the problem. 20) The fineness (purity) of gold is regulated by law and is the same in all parts of the world. The purity is stated in terms of karats. -kt gold is parts gold and 0 parts alloy. Write this measure of purity as a fraction in lowest terms. C) ) Determine if the number is divisible by 2,,,, 6, 8,, and/or 0. If it is not divisible by any of these, then answer "None". 2) 0 2) 2,,, 6, 0 2,,, 0 C) 2,,, 6 None 22) 68 2,,, 8 2,,, 6, 8, C) None 2,, 6, 8 22) 2) 8, C) None, 6 2) 2) 22 None, 6 C), 2) Write an equivalent fraction using the given denominator. 2) 6 = 2 2) 8 2 C) 2 26) = 26) 0 C) 20 2) 2 = C) 2 2) 28) 8 = 0 28) 6 0 C) 6 8

4 2) = 28 2) 2 2 C) 28 Find the least common denominator for the given set of denominators. 0) 8, C) ) ), 6, C), ) 2) 2,, 08 2 C) 26 2) ) 2, C) 22 ) ) 60, 20, C) 60 0 ) ),, 2, C) 2 2 ) 6) 6, 8, 0, C) ) ),, 28, 6 C) 2 ) Add. Write the answer in lowest terms. 8) ) 8 C) ) + 2 ) 6 2 C) 0) C) )

5 ) + 6 ) 2 8 C) 2 2) 0 + 2) 2 20 C) 20 Add. Write your answer in lowest terms. ) ) 2 8 C) 6 6 ) ) C) ) ) C) 6 2 6) 8 0 6) C) 2 8

6 ) 2 8 ) C) 2 8 Subtract. Write the answer in lowest terms. 8) 8-2 8) 8 8 C) ) 8 - ) C) ) 2-0) 8 2 C) 8 2 ) ) C) ) - 2 2) C) 0 0 ) ) - 2 C) 6

7 ) ) C) 20 ) 2 ) C) 6 8 6) 6 6) C) 2 Solve the problem. ) Ellen is knitting a scarf with one 2 2 -inch blue stripe, one -inch green stripe, and one 6-inch ) white stripe. How wide is the scarf? 6 in. in. C) 8 in. 6 in. 8) While shopping for a party, June bought 6 pounds of hamburger, 2 pounds of chicken, and 8) 8 pounds of ham. How much meat did she buy? 2 lb 2 lb C) 2 lb 2 22 lb ) A laminated lab bench has 2 inches of plywood, 2 inches of pressed board, and inch of ) formica. What is the thickness of the lab bench? 0 62 in. 2 in. C) 2 in. 0 in.

8 60) To obtain a certain shade of paint, Peter mixed 6 gallons of white paint with gallons of brown 60) and 2 gallons of blue paint. How much paint did he have? 0 2 gal 2 gal C) gal gal 6) Jeff studied math for 2 hours, history for hours, and physics for hours. How long did he 6) study? 0 6 hr 6 0 hr C) 0 hr 0 hr 62) Peter must practice the piano hours per week. He has already practiced 2 hours. How many 62) more hours does he need to practice? 8 hr 6 hr C) 2 hr hr 6) A nail 2 inches long is driven into a board inches thick. How much of the nail protrudes from 6) the other side of the board? in. 20 in. C) 2 in. 20 in. 6) Jake wants to work hours at his part-time job this week. He has already worked hours. 6) How many more hours does he need to work? 2 hr hr C) hr 2 8 hr 6) There were 2 2 yards of fabric on a bolt. After a customer bought 2 yards were left? yards of fabric, how many 6) yd 6 yd C) 2 yd 20 6 yd 66) A tank contains 2 gallons of water. Its capacity is fill it? gallons. How much more water is needed to 66) 2 gal 8 gal C) 20 gal 2 gal 8

9 The graph represents the 2-hour day of a small-business owner. Sleep Work Free time 2 Eat 2 Travel 8 Worry 6 6) What fraction of the day is spent in work, worry, and travel? 2 C) ) 68) How many hours of the day are spent in work, worry, and travel? hours 6 hours C) 2 hours hours 68) 6) What activity takes the most time? How many hours? Work, 2 hours Work, 8 hours C) Sleep, 8 hours Work, 0 hours 6) 0) What fraction of the day is spent in sleeping, eating, and free time? C) ) ) How many hours of the day are given to free time and eating? hours hours C) hour 2 hours ) 2) If "worry" is another form of work, what fraction of the day is spent working? 2 C) 2 2 2) ) How many hours of the day are spent in travel and free time? 6 hours hours C) hours hours ) ) What fraction of the day is spent in free time and travel? 2 C) 6 2 )

10 Add. Write the answer in lowest terms. ) ) C) 2 2 6) 6) C) 2 2 ) ) + C) 8) 8) C)

11 ) ) C) 6 80) 80) C) 8 8 8) 8) 0 + C) 2 Subtract. Write the answer in lowest terms. 82) 82) C) 2 8

12 8) 8) C) ) 8) C) ) ) 6 0 C) ) 0-86) 6 C) 6 Solve the problem. 8) Ellen is knitting a scarf with one -inch blue stripe, one 2 6 -inch green stripe, and one 2 -inch 8) white stripe. How wide is the scarf? 0 in. 6 2 in. C) in. 2 0 in. 2

13 88) While shopping for a party, June bought 2 pounds of hamburger, pounds of chicken, and 88) 2 pounds of ham. How much meat did she buy? lb lb C) 2 lb 2 8 lb 8) A laminated lab bench has inches of plywood, 2 inches of pressed board, and inch of 0 8) formica. What is the thickness of the lab bench? in. in. C) in in. 0) To obtain a certain shade of paint, Peter mixed 6 2 gallons of white paint with 2 gallons of brown 0) and gallons of blue paint. How much paint did he have? 0 gal 88 gal C) 2 6 gal gal ) Jeff studied math for 2 hours, history for 6 hours, and physics for hours. How long did he ) study? 0 hr 6 hr C) 2 6 hr hr 2) Peter must practice the piano hours per week. He has already practiced 2 6 hours. How many 2) more hours does he need to practice? 2 hr 0 hr C) 0 hr 2 hr ) A nail 2 inches long is driven into a board the other side of the board? inches thick. How much of the nail protrudes from ) in. in. C) in. 2 in. ) Jake wants to work 2 hours at his part-time job this week. He has already worked hours. ) How many more hours does he need to work? 2 hr hr C) 0 20 hr 2 hr

14 ) There were yards of fabric on a bolt. After a customer bought yards of fabric, how many ) yards were left? 0 yd yd C) 2 20 yd yd 6) A tank contains 2 gallons of water. Its capacity is gallons. How much more water is needed to 6) fill it? 20 gal 2 gal C) gal 20 gal Perform the operation and reduce to lowest terms. ) ) 2 C) 8 8) 2 2 8) 2 2 C) ) 2 8 ) 6 8 C) ) 2 00) C) 2 0) 8 0) 6 6 C) 02) ) 2 C) 8 6

15 0) 6 0) 2 0 C) 2 2 0) 2 2 0) 20 C) 2 0) ) C) ) ) 8 C) 6 0) 8 0) 8 6 C) ) ) 2 6 C) 8 8 0) 0) C) 0 8 0) ) C) 2 6 ) 2 ) 28 6 C) 6

16 2) 2 2 2) 2 C) 2 6 ) 0 ) C) 0 8 ) 2 ) C) 0 2 ) 8 2 ) 2 8 C) 8 6) 6) C) 6 6 Find the time-and-a-half rate for the regular rate. ) $8 $2.00 $.00 C) $.20 $6.00 ) 8) $ $2.0 $.00 C) $2. $2.80 8) ) $.0 $2.0 $2.2 C) $.00 $2. ) 20) $.0 $2.00 $2. C) $20.0 $2.8 20) 2) $82.00 $.0 $.80 C) $6.00 $2.00 2) Solve the problem. 22) A small company sells stock for 8 8 dollars per share. How much will 6 shares cost? 22) 6 dollars 8 dollars C) 6 dollars 6 6 dollars 6

17 2) How many pieces of string inches long can be cut from a 2 inch piece of string? Round answer 2) to the nearest piece of string. 2 pieces 22 pieces C) pieces None of these 2) Tim needs to apply 2 gallons of herbicide per acre of soybeans. How many gallons of herbicide 2) are needed for 6 acres? 6 6 gallons gallons C) 2 2 gallons 2 gallons 2) On a certain map, inch equals 2 miles. How many miles are in inches? 2) miles 0 miles C) miles 8 miles 2 26) A technician has readings that take minutes each to read and record. How many readings can 26) be completed in 80 minutes? 8 readings readings C) 600 readings readings 2) The floor of a rectangular room is to be tiled with foot square tiles along a 0 8 foot wall. How 2) many tiles will be needed along the wall? tiles 0 8 tiles C) 8 tiles 2 tiles Write as a fraction in lowest terms. 28) C) ) 2) C) ) 0) C) ) ) C) )

18 Convert the fraction to a decimal. If a division does not come out evenly, round the answer to the nearest thousandth. 2) 6 2) C) 8..2 ) C) ) ) C) 8..6 ) SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. Provide an appropriate response. ) In your own words, explain what a fraction means. ) 6) Explain the meaning of 2. Use a pizza in your explanation. 6) ) Explain, in your own words, what is the least common multiple of two numbers. ) 8) Explain why, when rewriting a fraction with a different denominator, the fraction can be multiplied by another fraction whose numerator and denominator are the same. 8) ) Explain what it means to rename a fraction. ) 0) What is wrong if two fractions are added and the result is expressed as a whole number and an improper fraction? 0) ) Tell what you would do if you added the fraction parts of mixed numbers and the result was greater than. ) 2) Is this statement correct or incorrect? Explain. 2) = ) Explain in your own words the steps you would take to divide fractions. ) 8

19 Answer Key Testname: UNTITLED2 ) D 2) A ) D ) D ) B 6) B ) C 8) A ) C 0) A ) A 2) A ) A ) D ) A 6) A ) B 8) C ) D 20) D 2) A 22) B 2) C 2) A 2) C 26) A 2) D 28) D 2) A 0) D ) C 2) C ) A ) A ) A 6) B ) A 8) A ) C 0) C ) B 2) A ) A ) A ) C 6) B ) D 8) B ) A 0) C

20 Answer Key Testname: UNTITLED2 ) A 2) D ) A ) A ) A 6) C ) D 8) C ) D 60) D 6) B 62) A 6) D 6) D 6) D 66) C 6) C 68) D 6) B 0) A ) A 2) D ) D ) C ) C 6) C ) C 8) B ) C 80) D 8) A 82) D 8) A 8) C 8) B 86) B 8) D 88) C 8) D 0) D ) C 2) B ) A ) C ) C 6) D ) B 8) C ) A 00) D 20

21 Answer Key Testname: UNTITLED2 0) C 02) B 0) A 0) D 0) D 06) D 0) C 08) C 0) B 0) B ) A 2) D ) D ) D ) C 6) C ) A 8) A ) B 20) B 2) D 22) B 2) B 2) B 2) D 26) B 2) C 28) B 2) C 0) D ) D 2) A ) C ) B ) It is a division. a = a b. Divide the whole into b equal parts, and take a of them. b 6) Cut a pizza into parts and serve 2 of them. ) Answers will vary. The LCM of two whole numbers is the smallest whole number divisible by both those numbers. 8) Answers will vary. When the numerator and denominator are the same, the fraction is equal to. Any number multiplied by is the number itself. ) It means to write an equivalent fraction. It can be done by reducing or expanding a fraction. 0) Answers will vary. The result is hard to understand. The result should be given as a mixed number. ) Answers will vary. You would carry from the fraction column to the whole number. 2) Incorrect. A mixed number is an addition, not a multiplication. ) Change any mixed numbers to improper fractions. Multiply the dividend by the reciprocal of the divisor. Reduce the fractions if possible. Multiply across. 2