Create Presentation
Download Presentation

Download Presentation

40th Annual Lee Webb Math Field Day MARCH 12, 2011

Download Presentation
## 40th Annual Lee Webb Math Field Day MARCH 12, 2011

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**40th Annual Lee Webb Math Field DayMARCH 12, 2011**Junior Varsity Math Bowl**Before We Begin:**• Please turn all cell phones off, or set to vibrate, while the Math Bowl is in progress. • Students will use the TI-Inspire only to electronically submit their answers. You will not be able to use the calculator to perform any computations. • Turn on your calculator by pressing the ON button in the lower left corner. The HOME screen should appear, and A: Calculate should be highlighted.**For each question, a signal will be sent to your calculator,**and a screen will appear for your use in submitting your answers. • You will need to use the TAB button, located on the upper left side of calculator, to the left of the large round thumb cursor to submit your answers. • We will first make sure that all calculators are properly logged in before we start.**We will do a sample question each round, utilizing some keys**that students may need for their answers. • There is to be no talking among the students on stage once the round has begun. • Audience please do not shout out any answers.**2011**Math BowlJunior VarsityRound 1**Sample - 45 seconds**Submit the following answer, being sure to place parentheses properly to dictate the desired order of operations. Remember to use the tab key to exit an exponent.**Problem 1.1 - 15 seconds**Which of the following decimals is the smallest? Enter the decimal, not the letter. a) .031 b) .029 c) .03 d) .009**Problem 1.2 - 15 seconds**Find f(4) when f(x) = -2x - 7.**Problem 1.3 - 30 seconds**What is the y intercept of the line perpendicular to the line y = 3x + 5, and passing through the point (3, 5)?**Problem 1.4 - 30 seconds**The ratio of men to women in a certain Iowa farm town is 5 to 3. If there are 600 adults in the town, how many are men?**Problem 1.5 - 15 seconds**Simplify: 12 - 3(x - 2)**Problem 1.6 - 45 seconds**The length of a rectangle is 8 in. longer than its width. If its perimeter is 32 in., what is its area, in sq. in.?**Problem 1.7 - 30 seconds**The cost of producing n suncatchers is given by C(n) = 150 + 3n; while the revenue from the sale of these suncatchers is given by R(n) = 8n. How many suncatchers must the manufacturer sell to break even?**Problem 1.8 - 15 seconds**Simplify as much as possible: (751/2)(3001/2)**Problem 1.9 - 30 seconds**What is the volume, in square centimeters, of a 5 cm. tall right cylinder, if the base has a radius of 3 cm.? 5 cm. 3 cm.**Problem 1.10 - 30 seconds**A pair of shoes that originally sold for $100.00 was marked down 20%. Two weeks later it was marked down an additional 50%. What is the new price, in dollars?**Problem 1.11 - 30 seconds**What is the greatest common factor of 312 and 48?**Problem 1.11 - 45 seconds**State all values of x which satisfy the equation. 3x - 2(x2 - x + 1) = 0**Problem 1.13 - 30 seconds**A couple has $21.00 to spend on lunch, and want to leave a 20% tip. What is the maximum amount of money, in dollars, they can spend on their food order?**Problem 1.14 - 15 seconds**A, B, C are points on the circle centered at O. If , what is , in degrees? B A C O**2011**Math BowlJunior VarsityRound 2**For each question, a signal will be sent to your calculator,**and a screen will appear for your use in submitting your answers. • You will need to use the TAB button, located on the upper left side of calculator, to the left of the large round thumb cursor to submit your answers. • We will first make sure that all calculators are still properly logged in before we start. • Next we will review the keyboard again.**Sample - 45 seconds**Submit the following answer, being sure to place parentheses properly to dictate the desired order of operations. Remember to use the tab key to exit an exponent.**Problem 2.1 - 15 seconds**How many cubic feet are in 2 cubic yards?**Problem 2.2 - 30 seconds**Find the degree measure of angle x. x + 30º x x - 15º**Problem 2.3 - 45 seconds**Find the ordered pair that satisfies the linear system.**Problem 2.4 - 15 seconds**Rewrite as a fraction in lowest terms.**Problem 2.5 - 30 seconds**The number of houses sold by Apple Realty decreased from 300 in the year 2009 to 180 in 2010. What is the percentage decrease in the number of houses sold?**Problem 2.6 - 15 seconds**What is the maximum value in the range of the function f(x) = -(x – 5)2 - 3 ?**Problem 2.7 - 30 seconds**Find the area of the parallelogram, in square centimeters.**Problem 2.8 - 15 seconds**What is the median of the following set of numbers? {2, 5, 7, 5, 3}**Problem 2.9 - 30 seconds**Solve the absolute value equation.**Problem 2.10 - 15 seconds**Find the distance between the points (-2, 6) and (4, -2).**Problem 2.11 - 30 seconds**Suzanne volunteered to make 180 cookies for a bake sale. In 90 minutes, she has only made 30 cookies. At that rate, how many hours will it take her to make the rest of the cookies?**Problem 2.12 - 45 seconds**Solve for x:**2011**Math BowlJunior VarsityRound 3**For each question, a signal will be sent to your calculator,**and a screen will appear for your use in submitting your answers. • You will need to use the TAB button, located on the upper left side of calculator, to the left of the large round thumb cursor to submit your answers. • We will first make sure that all students have the correct calculator and that the calculators are properly logged in before we start. • Next we will review the keyboard again.**Sample - 45 seconds**Submit the following answer, being sure to place parentheses properly to dictate the desired order of operations. Remember to use the tab key to exit an exponent.**Problem 3.1 - 45 seconds**Bill is making decorative plaques from scrap lumber to sell at the flea market. If each plaque measures 15” long by 5” wide, and he has four 8 foot long 10" wide boards available, how many plaques can he make?**Problem 3.2 - 15 seconds**Simplify: log12**Problem 3.3 - 30 seconds**Let M = kN - 4. When N = 9, M = 2. Find the value of M when N = 15.**Problem 3.5 - 45 seconds**At a discount store, similar items are the same price. One sweater and three shirts cost $42, while three sweaters and two shirts cost $56. How much does one shirt cost, in dollars?**Problem 3.6 - 30 seconds**Find the value(s) of the x intercept(s) of the circle. (x + 3)2 + (y - 5)2 = 25**Problem 3.7 - 15 seconds**Simplify: i275