mathstudysec1 - Number Sense Number Sense Statistics, Data...

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Number SenseStatistics,AlgebraMeasurementDataMathandandAlgebra IAnalysis,ReasoningFunctionsGeometryProbabilityNumberSenseFourteen of the 80 CAHSEE math questions are based on 10 selectedstandards from the grade 7 Number Sense strand.WHAT DO THE NUMBER SENSE STANDARDS ASK ME TO DO?The CAHSEE Number Sense strand includes basic arithmetic calculationswith whole numbers, fractions, and decimals, all done without using acalculator.The CAHSEE Number Sense questions will ask you to:solve problems with fractions, decimals, percentages, and integerscompare and order numbersunderstand percents, including percents less than 1% and greater ±than 100%±use ratios and proportions to solve problemsunderstand the meaning of numbers written in scientific notationfind and use multiples, factors, and primesadd, subtract, multiply, and divide numbers, and use the ±relationships among these operations including inverse,±commutative, associative, and distributive properties±estimate square roots of whole numbers to the nearest whole ±number±VocabularyThe following words have appeared on the CAHSEE previously. If anyof these words are unfamiliar to you, look them up in the CAHSEE MathVocabulary list in the appendix at the back of this Study Guide, or checkwith your math teacher.absolute valueintegersimple interest±compound interestprimesquare±decreased byscientific notationsquare root±equivalent expression±33
34NUMBER SENSEWHY IS NUMBER SENSE IMPORTANT?As an adult, you will use all the basic skills of arithmetic included in theNumber Sense strand. You’ll use your number sense skills as a consumer(nutrition choices, shopping for credit, choosing the best buy), as a U.S.citizen (taxes, voting issues), and as an employee (handling money, costestimates, profit and loss, quality control). Many large companies givescreening tests that include number sense knowledge for entry-level jobs.The anchor problem for this strand,Emergency Refrigerator!, presents asituation that you may encounter when you rent your first apartment. Butbefore we tryEmergency Refrigerator!, let’s first look at some sampleCAHSEE questions, with solutions, that apply to this strand.HOW WILL THE CAHSEE TEST MY KNOWLEDGEOF NUMBER SENSE?The CAHSEE tests 10 of the 12 standards from the Number Sense strandfor grade 7. Let’s start by looking at 8 of these standards and some actualCAHSEE questions based on them. Each box that follows contains one ofthe standards, a sample question based on that standard, and a solutionwith explanation.Number Sense
How Will the CAHSEE Test My Knowledge of Number Sense?357NS1.1 Read, write, and compare rational numbers in scientific notation (positive andnegative powers of 10) with approximate numbers using scientific notation. [1 question]Sample CAHSEE Question

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Term
Spring
Professor
McAllister
Tags
Math, Statistics, Algebra, Geometry, Fractions, Probability, Elementary arithmetic, Number sense

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