hw+w4+t2

Don't forget to write a short paragraph for the Mathex blog (if your turn is due), on a mathematical process or principle that you find interesting. Use diagrams or pictures or even video to help your explanation.

Also make sure your Learning Log is up to date in your e-portfolio.

Your problems for this week are below:
 * 1)**
 * Mary and Jason were making propellers for their wooden helicopters. Mary put a number on her propellor and noticed that when she turned the propellor she had the same number.**[[image:http://www.stfx.ca/special/mathproblems/diagrams/6-21.gif]]
 * Jason was trying to think of a number that he could put on his that had the same rotational symmetry (looks the same turned upside down). What is the next larger number that has this property?**

code **SOFTBALL:          Adults $2.00   Children $1.00 BASKETBALL:        Adults $3.00   Children $1.50 SOCCER:            Adults $5.00   Children $2.50** code
 * 2)**
 * a) Mr. and Mrs. Callahan and their 3 children paid $7.00 for tickets. Which game do they plan to see?**
 * b) How much change would Mr. and Mrs. Callahan get if they took their children to see the basketball game and paid for it with a $20.00 bill?**


 * 3)**
 * Farmer Tom put a square fence around his vegetable garden to keep the deer from eating his corn. One side was 10m in length. If the posts were placed 2m apart, how many posts did he use?**


 * 4)**
 * Ammie passed around a basket of strawberries to the girls at her party. Before the party she ate 5 strawberries and gave a friend 3. Eight girls arrived at the party. The first girl took a strawberry, the second girl took 3 strawberries, the third girl took 5 strawberries and so on. After the last girl took her strawberries, the basket was empty. How many strawberries were in the basket at the beginning?**


 * 5)**
 * Rob wanted an allowance. His father gave him a choice of getting it on a weekly or on a daily basis. He said he would either pay him $1.25 a week or pay him in the following manner for a week: On Monday he would give him $0.01; On Tuesday $0.02; On Wednesday $0.04 and on through Sunday. What would you tell Rob to do so he can get more allowance?**


 * 6)**
 * A side of square B is four times the length of a side of square A. How many times greater is the area of square B than the area of square A?**[[image:http://www.stfx.ca/special/mathproblems/diagrams/6-26.gif]]


 * 7)**
 * Shane the Snail started at the dot. What side will he be on when he has crawled 13/20 of the distance around the regular pentagon of equal sides?**[[image:http://www.stfx.ca/special/mathproblems/diagrams/6-27.gif]]


 * 8)**
 * The number of hours that were left in the day was one-third of the number of hours already passed. How many hours were left in the day?**


 * 9)**
 * A rectangular kitchen table is three times as long as it is wide.**
 * If it were 3m shorter and 3 m wider it would be a square.**
 * What are the dimensions of the rectangular table?**


 * 10)**
 * A manufacturer claims that a new motor oil saves 5 percent of the gasoline used by a car. If you drive 24,000 kilometres a year and he gets 32 kilometres a gallon of gasoline, how many gallons of gasoline could you save in 1 year?**


 * 11)**
 * What is the starting number (?) ?**[[image:http://www.stfx.ca/special/mathproblems/diagrams/6-31.gif]]

code **CARPET SALE Regular $9.99 square metre Now on Sale for 20 percent off** code
 * 12)**
 * Carpeting is on sale and Mrs. Doyle is looking for some carpet for her living room. Her living room is 4m by 5m. How much will it cost her to do this at sale price?**

code **AUTOMOBILE FUEL USAGE Starting                      .015 Litres Idling for 1 minute           .047 Litres Moving Manual gear 30km             3.0 Litres Automatic gear 27km          3.0 Litres** code
 * 13)**
 * Derek started his car (automatic gear) drove 9 km and spent 3 minutes waiting at traffic lights. About how much gasoline did Derek's car use?**
 * CHART GIVEN:**


 * 14)**
 * The Pictou Ferryboat is full when it has ten cars on board. It is also full when it has six trucks on board. The ferryboat never carries cars and trucks at the same time.**
 * The ferryboat made five trips across the river and was full on each trip. It carried a total of 42 cars and trucks across the river.**
 * How many cars did the ferryboat carry altogether in the five trips?**

code SPART x     4 --                   TRAPS code
 * 15)**
 * Jeremy had this problem on his first mathematics examination. He was having big problems with answering the question. Replace each letter with a different number. Identical letters should be replaced with the same number.**
 * Can you help him?**