Word Problems Involving One-Step Equations

Word Problems Involving One-Step Equations

Word Problems Involving OneStep Equations and Inequalities Observe, Question, Comment 10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities Warm-Up:

25L 25R Warm-Up: Write and solve inequalities 1) Thirteen plus a number n is greater than fifteen. 2) The sum of a number n and 3 is less than or equal to ten. 3) A number n multiplied by seven is less than or equal to 21.

4) A number n divided by 4 is greater than or equal to 3 5) The quotient of a number n divided by -5 is less than 9. Observe, Question, Comment 10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step

Equations and Inequalities Warm-Up: 25L Standard: 25R Content Standards

Algebra and Functions 4.0: Students solve simple equation and inequalities over the rational numbers Algebra and Functions 1.1: Use variables and appropriate operations to write an equation that represents a verbal description

Algebra and Functions 1.4: Use algebraic terminology (e.g. equation, inequality) correctly. Observe, Question, Comment

10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities Warm-Up: Standard: Objective: 25L

25R Objectives To solve one-step equation and inequalities. Observe, Question, Comment

10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities Warm-Up: Standard: Objective: Vocabulary:

25L 25R Vocabulary (Shout Outs) > Is greater thanIs Is greater thangreater Is greater thanthan < Is greater thanIs Is greater thanless Is greater thanthan Is greater thanIs Is greater thangreater Is greater thanthan Is greater thanor Is greater thanEqual Is greater thanto Is greater thanIs Is greater thanless Is greater thanthan Is greater thanor Is greater thanEqual Is greater thanto If Is greater than< Is greater thanor Is greater than> Is greater than Is greater thanOpen Is greater thanCircle If Is greater than Is greater thanor Is greater than Is greater than Closed Circle

Inverse operation opposite operation Observe, Question, Comment 10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities

Warm-Up: Standard: Objective: Vocabulary: Notes/Examples: 25L 25R

Brainpop Equation [4:49] Equation Jenny has 7 marbles and Kenny has 5. How many do they have together? Equation Jenny and Kenny together have 37 marbles,

and Kenny has 15. How many does Jenny have? Equation Jane is on page 79 of her book. The book has 254 pages. How many pages does she still have to read? Equations A used math book cost $17 less than the same new math book. The used book cost $9. About how much does the new book cost

Equation The United States population in 2005 was twice the population in 1949. Find the 1949 population in millions, when in 2005 the population was 5 million. Observe, Question, Comment

10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities Warm-Up: Standard: Classwork #1: Objective:

Vocabulary: Notes/Examples: 25L 25R Write and Solve an Equation 1) Freds target heart rate is 130 beats per minute. This is 58 beats per minute more than his resting heart rate r. Find his resting heart rate.

2) Cora measures her heart rate at 123 beats per minute. This is 55 beats per minute more than her resting heart rate r. Find Coras resting heart rate. 3) Carol earns $8/h. How many hours must she work to earn $288? [(rate)(time) = amount] 4) At a rate of $15 per month, how long does saving $135 take? [(rate)(time) = amount] Multiple Choice Mr. Menjivars DVR cost $328 less than his TV. His DVR cost $179. About how much did his TV cost?

I. About $175 II. About $300 III. About $325 IV. About $500 Write and solve an equation 1) The average distance from the sun to Jupiter is 778 million

km. This distance is 550 million km greater than the average distance from the sun to mars. Find the average distance d that Mars is from the sun. 2) The speed of sound through steel is 5,200 meters per second (m/s). This is 2,520 m/s faster than the speed of sound through silver. Find the speed of sound n through silver. 3) Venuss average distance from the sun is 108 million km. This distance is 42 million km less than the average distance from the sun to Earth. Find Earths average distance d from the sun.

Observe, Question, Comment 10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities Warm-Up:

Standard: Classwork #1: Objective: Vocabulary: Notes/Examples: [Back to the Notes] 25L

25R Brainpop Inequality [2:35] Graphing Inequalities [3:22] Inequalities Nearly 512 megabytes (MB) of memory are

available in Mr. Menjivars digital camera. If Mr. M used 128 MB, how much memory is available for taking more pictures? Inequalities An elevator can carry up to 2,500 lb. Suppose the weight of an average adult is 150 lb. At most how many average-sized adults can safely ride the elevator at the same time? Inequalities

Mr. Menjivar has $50.00. He wants to buy DVDs and see a movie at Krikorian Theater. Admission to the movie is $8.00. Each DVD cost $12.00. Write and solve an inequality to find how many DVDs you can buy. Inequalities Mary pay $0.06 per kilowatt-hour for electricity. She has budgeted $72 for her electricity. What is the greatest number of kilowatt-hours Mary can use and stay within

her budget? Observe, Question, Comment 10/31/11 10/31/11 Word Problems Reflection Word Problems Involving One-Step Equations and Inequalities Warm-Up:

Standard: Classwork #1: Objective: Classwork #2: Vocabulary: Notes/Examples:

25L 25R Write an inequality for each sentence. Then solve the inequality 1) The total weight limit for a truck is 100,000 pounds. The truck weighs 36,000 pound when the truck is empty. What is the most that the trucks load can weigh? 2) Mr. Menjivar is saving to buy a bicycle that will cost at least $120. Mr. Gonzalez gives him $45 toward the

bicycle. How much money will he have to save? 3) Jim has $87. He spends $6 for socks and at least $32 for shoes. How much does he have left to spend for shirts? Error Analysis Multiple Choice Sue worked at least 13 hours last week. She earns $5.75 per hour. What is the least amount she earned? I.

II. III. IV. $75 $74.75 $65 $7.50

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