2011_10A_Worksheets.pdf - A cell phone plan costs 20 dollars each month plus 5 cents per text message sent plus 10 cents for each minute used over 30

2011_10A_Worksheets.pdf - A cell phone plan costs 20...

This preview shows page 1 - 6 out of 26 pages.

A cell phone plan costs20dollars each month, plus5cents pertext message sent, plus10cents for each minute used over30hours. In January Michelle sent100text messages and talkedfor30.5hours. How much did she have to pay? (A)$24.00(B)$24.50(C)$25.50(D)$28.00(E)$30.00 2011 AMC 10A, Problem #1—2011 AMC 12A, Problem #1—“How many minutes of excess chatting are there, and what dothey cost?” Difficulty: Easy CCSS-M: N-Q.1. Use units as a way to understand problems and to guide the solution of multi-step problems; choose and interpret units consistently in formulas. 1
Image of page 1
A small bottle of shampoo can hold35milliliters of shampoo,whereas a large bottle can hold500milliliters of shampoo.Jasmine wants to buy the minimum number of small bottlesnecessary to completely fill a large bottle. How many bottlesmust she buy? 2011 AMC 10A, Problem #2—2011 AMC 12A, Problem #3—“The quantity 35 goes into 500 how many times?” needs to buy is 15.Difficulty:EasyCCSS-M:N-Q.3. Choose a level of accuracy appropriate to limitations on measurement when reportingquantities. 2
Image of page 2
Suppose[a b]denotes the average ofaandb, and{a b c}denotes the average ofa,b, andc. What is{{1 1 0}[0 1] 0}? (A)29(B)518(C)13(D)718(E)2Answer (D):First note that{1 1 0}=23and[0 1] =2. Therefore{{1 1 0}[0 1] 0}={23120}=23+12+ 03=718.Difficulty:Medium EasyCCSS-M:A-SSE.1.Interpret expressions that represent a quantity in terms of its context.Interpretcomplicated expressions by viewing one or more of their parts as a single entity. 3 2011 AMC 10A, Problem #3— “Pay attention to the order of substitutions.” Solution 1 3
Image of page 3
LetXandYbe the following sums of arithmetic sequences:X= 10 + 12 + 14 +· · ·+ 100,Y= 12 + 14 + 16 +· · ·+ 102.What is the value ofY-X? 2011 AMC 10A, Problem #4—“What are the elements inYbut not inX, and vice versa?” Difficulty: Medium CCSS-M: A-SSE.2. Use the structure of an expression to identify ways to rewrite it. 4
Image of page 4
Image of page 5
Image of page 6

You've reached the end of your free preview.

Want to read all 26 pages?

  • Winter '13
  • Kramer
  • Equals sign, Two and a Half Men

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture