Date Time Answers times in one minute. vary. 2. While reading, a typical student in my class blinks Answers times in one minute. vary. 1. While at rest, a typical student in my class blinks 3. In Problems 1 and 2, what is meant by the pl1rase a typical student? Sample answer: one that blinks about the same number of times as most others 4. Calculate the mean for each set of data. a. At rest: _ _ _ _ blinks per minute b. While reading: _ _ _ _ blinks per minute 5. List as many examples of rates as you can. 6. Find at least 2 examples of rates in your Student Reference Book. (Hint: Look at pages 271 and 299.) Sample answers: There are 555 televisions per 1,000 people in Spain. There are 757 cars per 1,000 people in the United States. 309 Time Date Fill in the missing fractions on the number lines below. 1. ... 1 3 2. ... I 3. ... , 0 2 3 , I I 2 6 1 6 0 I 1 8 2 8 3 8 4 8 I 4 6 6 I 1 I 3 I I , I I i 0 5 ... I ... , ... 1 6 I I 5 8 I 6 7 8 8 1 Fill in the missing decimals on the number lines below. 4. ... ,, , , 2 4 Try This 3 2.5 3.5 ... i ~ "'"',!~""""~'1'~fk~~";""r~''''''''''''''''',-''; 5. ... , , 7 8 6. ... 7.25 7.50 7.75 , -2 310 -1.5 -1 - 0.5 o 0.5 , 1 ... ... Date Time 2. Calculate the volume. 1. a. Pick a face of the cube. How many other faces are parallel to it? 1 face(s) 5 in. b. Pick an edge of the cube. How many other edges are parallel to it? 3 edge(s) a 3. Write A, P, or V to tell whether you would need to find the area, perimeter, or volume in each situation. Number model: p b. Buying tile for a bathroom floor c. Filling a pool with water b. A _V_ <, >, or = to make a true 3 < > -100 -43 _ _ -21 c. 68 d. < -15 ~_>_-0.78 e. -13 1 2 5. For which number is 8 a factor? Fill in in 3 sentence. a. a. Finding the distance around a circular track 240 Volume = 4. Insert _(5_*_8-,-)_*_6__2_4_0 < -13 . 6. Round each number to the nearest the circle next to the best answer. hundredth. ® 253 a. 12.368 @ 94 b. 234.989 • 120 c. 1.225 @ 884 d. 12.304 e. 0.550 12.37 234.99 1.23 12.30 0.55 311 Date Time .l!lJ For each problem, fill in the rate table. Then answer the question below the table. 1. Bill's new car can travel about 35 miles on 1 gallon of gasoline. Gasoline mileage: 35 miles per gallon Miles Gallons 70 105 140 175 210 245 280 35 1 2 3 4 5 6 At this rate, about how far can the car travel on 7 gallons of gas? 7 245 8 miles 2. Jennifer earns $8 for every 4 hours she helps out around the house. Earnings: $8 in 4 hours Dollars 2 Hours 1 I 4 6 2 3 10 12 14 16 4 5 At this rate, how much money does Jennifer earn per hour? 6 7 8 2.00 A gray whale's heart beats 24 times in 3 minutes. ray whale's heart rate: 24 beats in 3 minutes 1 Heartbeats 8 Minutes 1 16 2'+1 32 40 48 56 64 2 3 4 5 6 At this rate, how many times does a gray whale's heart beat in 2 minutes? 7 _1_6_ _ times 4. Ms. Romero paid $1.80 for 3 pounds of grapes. Cost of grapes: 3 pounds for $1.80 . Pounds 1 2 3 4 5 Dollars At this rate, how much do 5 pounds of grapes cost? $ 312 3.00 6 8 7 Time Date I~~ ~~~~~,~~~ / ! Dollars 2.50 5 1 2 1 ! Yards "'-,~~~~~.~.",~.~,.~~........•.~ ..~'.. •..,.~ 4 /5.00 ~.,~~ 17.50: 20 6 7 12 1~ 4 2 12 14 16 5 ' At this rate, how much will 6. Alden bought 10 12.5 . 7~ yards of fabric cost? 18.75 ~ of a pound of cheese for $6. Cost of cheese: ~ of a pound for $6 Pounds 1 4 1 2 3 4 1 12 • Dollars 2 4 6 8 10 At this rate, how much will 1! pounds cost? $ 4 2 .. . 10.00 7. The Jefferson family plans to sit down to Thanksgiving dinner at 6:00 P.M. They have an 18·pound turkey. The turkey needs to cook about 20 minutes per pound. a. At what time should the turkey go in the oven? _1_2_n_o_o_n_ b. Explain what you did to solve the problem. Sample answer: The turkey will take a total of 18 * 20 = 360 minutes to cook. 360 / 60 == 6 hours. I counted back 6 hours from 6:00. The turkey should go in at noon. 313 Time Date 1. a. Complete the table. 2. Complete. ,.; ! . Number of Pizzas 1 Number I"~ of Servings 3 ....' 2 6 ! . 3 4 9 12 a. 3 gal 5 15 c. 0 ·75 L = 750 mL d. 93 3. Find the solution of each open sentence. + 40 = -60 a. m b. 55 + q = 40 c. (-23) d. p + s= 0 + (-36) = -80 11 1 51 2 pt c = 23 c --------------------------~ 4. Complete the name-collection box. Sample answers: -1 00 q=-=15 m= _ _ _8_+0_1--~l 8 + 0.01 23 P = _-44 _ __ f s ~ ,.' 5. Fill in the blank with one of the words below. '" . --------------------------~ 6. Calculate . a. 10% of 460 impossible b. unlikely 5% of 120 c. 40% of likely nIike IY that Without looking, itis U a B block will be pulled from the bag. d. e. f. 314 mL pt e. 64 gal = ~ pizzas 5,000 5 L= b. How many' pizzas are needed for 279 servings? qt b. ..... ..,.". 12 = 30 50 38 10 46 6 =4 % of 20 = 6 % of 92 = 46 % of 150 = 57 ~ Time Date .;,...,......_M_ath Boxes ~, .~_ , ". .; , volume. 2. Calculate the [LJJ -- 1. ~ I I ---~--t, ,, , , : ,, a. Pick a face of the cube. How many other faces are perpendicular to it? 4 face(s) 9n ,,0m m Number model: (5 * 1) * 9 = ' 1 b. Pick an edge of the cube. How many other edges are perpendicular . 4 edge(s) ~: 94 101 to It? 3. Write A, P, or V to tell whether you would need to find the area, perimeter, or volume in each situation. A ~ 45 <, >, or to make a true number sentence. c. > -$3 -$7 < -$2 $18 > -$11 d. $61.50 b. _P_ c. Buying dirt for a potted plant 4. Insert = a. $8 a. Buying paint for a bedroom ceiling _ _ b. Buying a wedding ring Volume 45 V ~ '131 13~ > e. -$203.90 $67.85 < $320.10 d b,137 5. Name all the factors of each number. a. 55 b. 32 1, 5, 11, 55 1, 2, 4, 8, 16, 32 6. Round each number to the nearest hundredth. a. 0.123 b. 4.568 c. 96 1, 2, 3, 4, 6, 8, 12, 16,24,32,48,96 c. 6.155 d. 9.780 e. 0.006 0.12 4.57 6.16 9.78 0.01 ~1~3 182 315 Time Date Math Message It is estimated that the average lifetime of a person living in the United States is about 75 years. 2_7--",_3_7_5__ days About how many days are there in an average lifetime? __ About how many hours is that? 657,000 hours Sample answers: Use the data from the above Math Message to help you answer the following questi0ns: 1. It is estimated that a person sleeps about 214,000 hours in an average lifetime. 8_ hours per day a. At that rate, about how many hours per day does a person sleep? _ _ b. Show or explain how you got your answer. 214,000 hours is about ~ of an average lifetime, and ~ of 24 hours is 8 hours. c. Does this number make sense to you? Explain. Yes, becau~e I sleep about 8 hours per night. 2. It is estimated that in an average lifetime a person watches about 105,000 hours of TV. a. At that rate, about how many hours per day does a person watch TV? 3.8 hours per day b. Show or explain how you got your answer. 105,000 hours + 27,375 days in 75 years = 3.8 hours per day. c. Does this number make sense to you? Explain. Yes. I don't watch that much TV. Some people watch more. It balances out. 316 Time Date 3. It is estimated that in an average lifetime a person laughs about 540,000 times. a. At that rate, about how many times per day does a person laugh? 20 tim~s per day b. Show or explain how you got your answer. Sample answer: I divided the number of laughs (540,000) by the number of days in a lifetime (27,375). 540,000 -;- 27,375 == 19.7. Then I rounded up to 20. c. Does this number make sense to you? Explain. Sample answer: Yes. While I laugh way more than 20 ti l11 es a day, thereC::!re people who dOQ't laugh at all. So we balance each other out. 4. It is estimated that in an average lifetime, a person takes about 95,000,000 breaths. Does this number make sense to you? Explain. Sample answer: No. This is only about 145 breaths per hour, which is less than 3 breaths per 111.~in_u_te_._ _ Try This 5. Write your own problem. Ask a partner to decide whether or not the numbers in your problem make sense. Answers va - ........ ------- 317 Date Time Be Line~raph . Use the data in the table below to create a line graph showing how the total amount of XBCIPltatilOn (rain and snow) changes from month to month in Ottawa, the capital of Canada. se a straightedge to connect the points. Label each axis, and give the graph a title. . Month J F M A M Precipitation ,(in mm) 51 50 57 65 77 " .. -f-"-_~ 7~ -_-~-~.,~>, "~".;'- •. --."-- -T--'''' I J J A S 0 N D 84 87 88 84 75 81 73 -~-"- ~ Source: www.theweathernetwork.com/weatherlstats/pages/C01930.htm Average Monthly Precipitation for Ottawa. Canada 90 88 86 84 82 I--·L.80 78 76 74 72 70 , 68 66 ,..--- f .... 64 _.... _+62 60 58 56 54 52 50 48 46 44 42 40 I--j 0 ....... ctS :!:::: --c.> Q) "' c.. : ... .. _. ! J ... f : i . / ' ""'" / ,.. L / i "' "\. '\. ~ L'\. '\. '\. /' / '\. It --j-- ...... :l I j! .,/ / / / /i i I .......-.. I i i • ! i i i I i i I ! I , [ .. : : J j i : Feb Mar - .......... o ' I : I : , : Apr May Jun : Jul Aug i : : i Sep Oct Month Try This 2. In Ottawa, Canada, it rains or snows mm during a typical month. Sample answers: 76 (median); 72.67 (mean) 318 '\.. (' I / : / • . / i : Jan ""'- ~ i ! .-. "";=- • ! ; i , c: , I ; [ Nov Dec Date Time Some publications ask their readers to test many different kinds of products. The results of the tests are then published to help readers make wise buying decisions. One example is the former Consumer Reports for Kids Online. It featured articles previously published in Zillions, a child's version of Consumer Reports. In one test, 99 readers field tested several backpack models. The readers considered fit, back friendliness, and comfort as they tried to decide which brand was the best buy. In another test, a team of young people compared 40 brands of jeans in their search for a brand that would not shrink in length. When a reader wrote to complain about a board game she bought, the staff sent board games to young people in every part of the country. Testers were asked to play each game several times and then to report what they liked and disliked about the game. Answers vary. 1. If you were testing a board game, what are some of the features you would look for? 2. When readers of the magazine tested backpacks, they considered fit, back friendliness, and comfort in determining the best one. Which of these factors is the most important to you? Why? 3. What is a consumer? Be prepared to share your definition with the class. 319 Time Date 1 pound (Ib) = 16 ounces (oz) 2,000 pounds (lb) 1 ton (T) Complete the conversions between ounces, pounds, and tons. Write the information you needed to make the conversion. 2. / lb = / 6 oz _---"8::.-=:0"--_ oz 1. 5 Ib = 16 oz 1 Ib = 16 oz 1 T = 2,000 Ib 1 T = 2,000 Ib 1 Ib 2'1 Ib = ---=-_ _ oz 3. 1291b 2,064 = 4,000 4. 2 T = 5. 6 OZ Ib 12,500 1 4T Ib 6. 112 oz = _--=-7__ Ib 7. 20,000 Ib = 8. 4,240 oz 9. 3,000 Ib 1 10. 14 Ib = = 10 T 265 Ib 11 = 20 1 Ib = 16 1T = ~, 000 Ib 1 Ib = 16 oz 1 T = 2,000 Ib T oz oz _~1 Ib = 16 oz Complete the table. 11. 319A Ounces Pounds Tons 160,000 10,000 5 304,000 19,000 9.5 16,000 1,000 2 1 Time Date 12. Record measurement equivalents in the two-column tables below. Sample answers: b. / ----.-.-.--...... ...... a. Feet Liters Milliliters 1,000 2,000 3,000 4,000 5,000 1 12 1 2 24 36 48 60 2 3 4 5 3 4 5 Sample a.nswers: .. c. .--~ , ---.,---~ ..... Minutes Seconds 1 60 120 180 240 300 2 3 4 5 - Find the equivalent measures. 6,000 13. a. 6 km c. 6 yd 1 = e. 5i kg ft 5 1500 = b. 2 L m d. g 2,000 = = 3,250 = 510 3.25 L f. 8i 11r mL mL min g. What do you notice when you convert from a larger unit to a smaller unit (such as from L to mL)? Sample answer: You need to multiply to find the equivalent measure. 14. a. 4,000 g c. 875 mL = e. 1,500 mL 4 kg b. 0.875 L d. 660 sec = 1.5 L f. 200 cm 156 in. = 2 m _--=-1-=-1__ min = _--,,-1-=-_ ft g. What do you notice when you convert from a smaller unit to a larger unit (such as 'from mL to L)? Sampie answer: You need tQmgi"'=-=.id=-=e--C:t:..=.o_ _ _ _ __ fi nd the equi",ale.-=-:.n-=--t.: . .:. m-=-.=e=-=a.: .,.=s-=u:. :. .cre=-:._ _________ 319B Time Date Solve the unit price problems below. Complete the tables if it is helpful to do so. 1. A 12-ounce can of fruit juice costs 60 cents. The unit price is $0.05 per ounce. Dollars 0.05 0.15 0.30 0.60 Ounces 1 3 6 12 $0.29 2. A 4-pound bunch of bananas costs $1.16. The unit price is 0.29 0.58 0.87 1 2 3 3. A 5-pound bag of apples costs $1.90. The unit price is . Dollars per pound. 1.16 I $0.38 4 per pound. 0.38 0.76 1.14 1.52 1.90 1 2 3 4 5 Pounds 4. Three pounds of salm~n cost $21.00. a. The unit price is ~ 7 ·00 per pound. b. What is the cost of 7 pounds of salmon? c. What is the cost of Dollars Pounds 9~ pounds of salmon? 66. 50 7.00 14.00 1 $;9.00 2 21.00 3 28.00 49.00 66.50 4 7 Try This 5. Energy granola bars come in packages of 25 and cost $3.50 per package. Super granola bars come in packages of 30 and cost $3.60 per package. Which is the better buy? Explain. It depends. Super bars are $0.12 each, and Energy bars are $0.14 each. So $I.!per bars are cheap~r per bar. However, an Energy bar may be much larger than a Super bar. 320 Date Time 2. Complete. 1. a. Complete the table. Number of Inches 36 72 324432 540 b. Number 1 of Yards 2 9 12 15 b. How many inches are in 329 yards? 1 1 ,fJ~~nches 2fJ qt fJ,OOO mL 8L 0.25 L 250 mL 6 gal 1 a. 7 ga.l c. d. e. = 3 1 qt qt = 25 qt pt = 14 c ~ 3. Find the solution of each open sentence. a. t+ 30 = 120 t= b. 75 + n = 20 n= c. 16 +b= b= d. c 0 + (-61) = -97 c= -150 -55 -16 -36 S. Add blocks to the bag so it is likely that 4. Which one of the names below is name for 3.16? Fill in the circle next to the best answer. ® 4.8 - 1.64 ® 15.8/5 • 2.47 © 2.5 *6 + 0.66 6. Calculate. Arjan will pick a C block without looking. 52 5% of 180 = _9 __ 40% of 10 =4 50 % of 30 = 15 a. 10% of 520 Sample answer: jI., .I:.'l ~i ~I~[Q] 0~[QJ ~0lliJ® not a b. c. d. = e. ~O % of 35 = 14 f. ~O % of 95 = 38 ~ 321 Date Time Math Message 1. Use your calculator to divide. Write down what the calculator displays for each quotient. Your teacher will tell you how to fill in the answer spaces for "cents." a. $9.52 -:- 7 $_1_ b. $1.38 -:- 6 = 0 c. $0.92 -;-. 8 _ $0 _ . ~_______ 2 3 or 136 = 0 1 _1 _ 5 _____ 1 7 cents _ _ _ , or _2_3_ cents· ,or 11.5 cents 0 _ 1 _ 6 _ 3 _ 3 _ 3 _ 3 _ 3 _ 3_ 33 $_. _ , or about d. $0.98 -;- 6 e. $1.61 -:- 9 3 8 8 ~~~~ 8 JL, or about 2. A package of 6 fruit bars costs $2.89. What is the price of 1 fruit bar? 3. A 15-ounce bottle of shampoo costs $3.89. What is the price per ounce? 16.3 cents 17.8 cents 48 26 cents cents Brand A: a box of 16 crayons for 80 cents B: a box of 32 crayons of the same kind for $1.28 the box of 32 Why? The crayons in the box of 32 cost $0.04 each. The crayons ill the box of 19 cost $0.05 each. ich box is the better buy? Try This 5. A store sells a 3-pound can of coffee for $7.98 and a 2-pound can of the same brand for $5.98. You can use a coupon worth 70 cents toward the purchase of the 2-pound can. If you use the coupon, which is the better buy, the 3-Round can or the 2-pound can? Explain your answer. The 2-pound cao with the coupon ismthe better deal. With the coupon, the price of the 2-pound can is $5.28. So the price per pound is $2.64, whereas the 3-pound can costs $2.66 per pound. 322 Time Date Write the amount of liquid shown in liters. 2. 1. 3. )----- 3 L )----- 3 L 1--- 2L )----- 2 L )----- 2 L 1----1 L 1----1 L 1----1 L 1--- 2.7 ----'---"-'2=__ liters 0.900 liters 3L liters Shade each pitcher to show the appropriate amount in milliliters. Then record the amount in liters. 4. 2,400 mL = 2.4 L 5. 500 mL = 0.5 L 6. 1,950 mL = 1.95 L )----- 3 L 1---2L 1----1 L 322A Time Date Solve. You may draw pictures to help you. Maria Elena's store sells soup in various sized containers . ...... ... , Size of Container Amount Price Extra small 250mL $1.50 Small 500 mL $2.45 1L $4.80 1.5 L $6.25 2L $8.50 Medium Large . Extra large 1. How much more soup does the extra large container hold than the extra small? 1.75 L, or 1,750 mL 2. Lucius bought 1 extra small, 1 medium, and 3 small containers of soup. How many liters of soup did he buy? _----'2~.7=--=5__ L 3. Kamu bought 3 large containers of soup. She needs 4,000 mL of soup. a. Does she have enough? yes b. If so, how much extra soup does she have? 0.5 L, or 500 mL 4. Sally bought 1 extra small, 1 small, and 2 extra large containers of soup. How much money did she spend? $20.95 .:'...,." 5. Rocco wants to spend $8 or less on soup but he wants to get the most for his money. a. What's the greatest amount of soup he could buy? _ _ 1_07_5-=--=L__ 7-=-.7.:-5=-_ b. How much would he spend? __$.I.....:- 6. Write and solve your own problem. Answers vary. 3228 Time Date .. •. . . ...."."...... ..... . ..' Math Boxes ...... . <•• .,..".-----~ •.c.•..•__..••._•••• _.~~~, .~ ~ ~_~~-_:__- - ,. .,- "- ,- ~'0"'" -~- - _ : '- -:- .-'" '- . . ,-'~" - -~ . __ ... __ .. 1. Multiply. Show your work. 46 * 231 = ... .~ ...... ~~.... I .... ... _ _ _____""__ . ~_~ .. i ~:''''51 ~. . ,. . - - -',.f/ ; ____. _ _ _____ . 2. a. Complete the table. 10,626 1 Number of Cups 16 32 . Number of Gallons 1 2 ' 144 192 9 92 4. Subtract. a. +$9 - (+$4) = 26~ CUpS b. +$8 - (-$3) c. -$7 - (+$15) = e. -$14 - _$-,---5_ $11 -$22 -$7 (-$9) = -$5 d. -$6 - (+$1) 5. Calculate the volume. 5~ gallons? cups 20 gallons of soft drinks per year. At that rate, about how many cups does a 10-year-old drink in a month? 17 <---.-y~- --'---~ ~." b. How many cups are in 3. An average 10-year-old drinks about 12 272 •. = 6. A 3-ounce bag of corn chips costs $0.65. ~/----</ A 14-ounce bag of corn chips costs $2.79. a. What is the price per ounce of each bag? (Round to the nearest cent.) 8ft ,, , $0·22 14-oz bag: $0.20 3-oz bag: 8ft Number mOdel:(8 Volume = * * 512 8) 1t3 8 = 512 ~ b. Which bag of chips is the better buy? the 14-oz bag 0 323 Date Time .t~O~ki~g_Ba~k on the World Tour~.~.~_.:__._· Math Message It is time to complete the World Tour. Answers vary. 1. Fly to Washington, D.C., and then travel to your hometown. Mark the final leg of the tour on the Route Map on Math Journal 2, pages 330 and 331. 2. What is the total distance you have traveled? _ _ _ miles 3. The airline has given you a coupon for every 5,000 miles you have traveled. Suppose you did all your traveling by plane on the same airline. How many coupons have you earned on the World Tour? _ _ _ coupons 4. You can trade in 5 coupons for one free round-trip ticket to fly anywhere in the continental United States. How many round-trip tickets have you earned on the World Tour? _ _ _ round-trip tickets Refer to "My Country Notes" in your journals (Math Journal 1, pages 174-181 and Math Journal 2, pages 332-341) as you answer the following questions. 5. If you could travel all over the world for a whole year, what information would you need in order to plan your trip? 324 j Date Time 6. To which country would you most like to travel in your lifetime? Explain your answer. Answers vary. 7. On your travels, you would have the opportunity to learn about many different cultures. What would you want to share with people from other countries about your culture? 8. What are some things you have enjoyed on the World Tour? 9. What is something about the World Tour you would like to add or change? 325 Date Time 1. David Fischer of Chicago, Illinois, jumped rope 56 times in 60 seconds. If he could continue at this rate, about how many jumps would he do in 13 minutes? 7_2_8.__ jumps About _ _ Source: Guinness World Records, www.guinnessworldrecords.com 2. Some scientists recommend that the average person drink about 8 eight-ounce cups of water per day. At this rate, about how many cups of water would a person drink in 2 weeks? 1~1_2__ cups About _ _ 3. On average, Americans eat about 20 pounds of pasta per year. Y_e~s_ _ a. Does this 20 pounds per year seem reasonable to you? __ 20 pounds == 320 ounces. That is about 26 oz per month-about 4 servings. Explain. b. At this rate, about how many pounds of pasta would an American eat in 23 years? 4_6_._0__ pounds About _ _ Source: Sicilian Culture, www.siciliancuHure.com/food/pasta.htm 4. Thirty-six buses would be needed to carry the passengers and crew of three 747 jumbo jets. a. Fill in the rate table. , Buses 12 f ~ ..--~.~.-.- -...J : Jets' \ .... •.... 1 . I 24 36 180 252 2 3 15 I 21 b. How many jets would be needed to carry the passengers on 264 buses? _~2___ 5. A man in India grew one of his thumbnails until it was 114 centimeters long. Fingernails grow about 2.5 centimeters each year. At this rate, about how many years did it take the man in India to grow his thumbnail? 4_5_.6_ _ years About _ _ 326 Date Time 1. a. Complete the table. Number of Days 365 Number of Years 1 . 2. Give other names for each measure. Sample answers: 730 13,285 ,380 2 b. How many days are in 92 years? 12 9 a. 1 gal 4 qt 8 pt 16 c b. 1 qt 2 pt 4c 33 580 days a. Y+ (-8) -23 -15 Y= _ __ . -17 b. 12 + j = -5 J c. 35 + r= r= _ __ d. C 25 + (-115) = -144 C -L 0.5L clubs from a regular deck of playing cards without looking? Fill in the circle next to the best answer. ® • Sample answers: 2.75 2 0.75 100 - 97.25 2278 0.55 * 5 6. Calculate. a. 10% of 860 'c. 75% of very unlikely d. unlikely @ very likely e. ~ 86 _1_1_ 16 = 12 b. 5% of 220 = impossible © ~ 4. Complete the name-collection box. -10 -29 =_ __ 5. How likely is it that Raj will pick a 3 of 4 gal c. 50f mL ~ 3. Find the solution of each open sentence. 1 - f. 50 30 25 % of 87 43.5 % of 60 = 18 % of 145 36.25 327 Date Time 2. a. Complete the table. 1. Multiply. Show your work. 79 * 405 = 31 ,995 Number of Inches I I 12 24.1 08 144 192 324 : Number of Feet 1 2 9 12 16 27 f b. How many inches are in 11 feet? 132 inches 4. Subtract. 3. It is estimated that in an average lifetime of 75 years, a person takes about 50,000 trips in a car. -=$100 -$45 - (-$30) = -$15 -$60 - (+$60) = -$120 $80 $55 - (-$25) = $300 - (-$100) = $400 a. -$75 - (+$25) a. At that rate, about how many times a day would a person ride in a car? b. c. __2_ _ times d. b. Does this number make sense to you? e. yes ~ 5. Calculate the volume. 6. A 10-ounce can of peas costs $0.55. A 16-ounce can of peas costs $1.19. fc;2c:cm a. What is the price per ounce for each can? (Round to the nearest cent.) 10-oz can: S.Scm (12 * 5.5) * 3 = 198 Number model: - - - - - - - Volume = 328 198 cm3 16-oz can: $0.06 $0.07 b. Which can of peas is the better buy? 10-oz can ~
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