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Solutions: Percent Applications Math Goodies

Offer Details: In a fashion boutique, a coat that regularly sell for $150 is marked, "Get off." What is the sale price of the coat? $150 - $50 = $100. 100.00 or 100: 5: David arranges a 36-month car loan of $19,000 at 12.75% annual interest. Assuming equal monthly payments on principal and interest, how much will he pay monthly?

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Step by Step Math Lesson on How To Calculate Discount …

Offer Details: The phrases used for discounted items include, " off," "Save 50%," and "Get a 20% discount." Procedure: To calculate the discount, multiply the rate by the original price. To calculate the sale price, subtract the discount from original price. Exercises.

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Shopping Goodies Math Goodies

Offer Details: 20% off any purchase; $10 off your purchase of $30 or more; Which coupon would you choose and why? The answer depends on how much you buy from the store. The first coupon is a discount rate of 20% -- the discount will vary in direct proportion to the amount of your purchase. The second coupon is a fixed amount off a minimum buy.

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Percent discount Worksheet

Offer Details: Percent discount Worksheet. Search form. Search. To print this worksheet: click the "printer" icon in toolbar below. To save, click the "download" icon. PDF.js viewer. Thumbnails. Document Outline. Attachments.

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Percent and Proportions Math Goodies

Offer Details: Solve: Cross multiply and we get: 100 x = 45 (20) or 100 x = 900. Divide both sides by 100 to solve for x and we get: x = 9. Solution: 9 is 20% of 45. In Problems 1, 2 and 3 we are given two numbers and asked to find the third by using a proportion. However, the unknown quantity was different for each problem.

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Complete Math Goodies Curriculum

Offer Details: Download our ad-free, complete library of lessons, interactive exercises, worksheets, and games for just $59! View Curriculum Available as a Digital File Download (instant access) or CD (Priority Mail): Our software works off line in your browser (Windows OR Macintosh), with no banner ads! (no internet connection required).

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Educators Guide Math Goodies

Offer Details: All of our products work off line in your browser, with no Internet connection. This new release of our software, version 12, is an expansion pack of all previous releases since 1998. It contains our complete math curriculum, including 168 in-depth lessons organized into 17 units of instruction. Each unit consists of a related group of core

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Comparing Decimals Math Goodies

Offer Details: Example 1: Polygon Pizza Place caters children's parties with square-shaped pizza. Each pizza is exactly the same size and is divided into equal parts called slices. At Sam's party, each child had 2 out of 10 slices from a single pizza. At Elena's party, each child had 15 out of 100 slices from a single pizza. At which party did each child have more pizza?

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Teens, Sleep and School Math Goodies

Offer Details: A recent study found that "Teens whose parents pack them off to bed at 10 p.m. are less apt to become depressed or have suicidal thoughts than their peers who stay up much later." [8] It should be noted that there is a big difference between having suicidal thoughts and being suicidal.

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27 Tips for Parent Conferences Math Goodies

Offer Details: You'll get your relationship with parents off to a good start if you contact them early in the year, perhaps with a memo or newsletter sent home to all pupils. Give parents an outline of what their children will be studying, and let them know you'll be happy to meet with them during the year.

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Solutions: Integers Math Goodies

Offer Details: Maggie owes the candy store $35. Each of 5 friends will help her pay off her debt. How much will each friend pay?-35 ÷ + 5 = -7 Answer: $-7: 5: Roman Civilization began in 509 B.C. and ended in 476 A.D. How long did Roman Civilization last? + 476 - -509 = + 476 + + 509 = + 985 Answer: + 985 or 985 years: 6: Lilly bought 4 pairs of blue jeans

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Integer Addition

Offer Details: Do not confuse the sign of the integer with the operation being performed. Remember that: + 29 + + 16 = + 45 is read as Positive 29 plus positive 16 equals positive 45. So far we have added integers with like signs (either both negative or both positive).

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Calculating Percentage Increase And Decrease

Offer Details: Percent increase and percent decrease are measures of percent change, which is the extent to which something gains or loses value.Percent changes are useful to help people understand changes in a value over time. Let's look at some more …

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Starting to Homeschool Math Goodies

Offer Details: Buy when the pressure is off. Alternatively, get the catalogs before you go, know what you want, and save shipping costs. Many vendors will lower prices last day of the conference. Homeschooling laws for your state - I put this 4th so you'll talk to the others first. The laws can seem pretty convoluted at times, but you need to have a good copy

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Estimating Decimal Differences Math Goodies

Offer Details: Estimation is a good tool for making a rough calculation. It is also used to determine if an answer is reasonable. For example, if the cashier had given the customer 40 cents ($0.40), he could have used estimation to identify her mistake: The customer would make a rough calculation and realize that the cashier is off by a factor of 10.

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Solutions: Probability Math Goodies

Offer Details: Introduction to Probability Exercise Problem Solution 1 Which of the following is an experiment? Tossing a coin. Rolling a single 6-sided die. Choosing a marble from a jar. All of the above. All of the above. 2 Which of the following is an outcome? Rolling a pair of dice. Landing on red. Choosing 2 marbles from a jar. None of the above. Landing on red. 3 Which of the following

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Estimating Decimal Products Math Goodies

Offer Details: Example 1: If gasoline costs $6.50 per gallon and your gas tank holds 15.5 gallons, then about how much will you pay to fill your tank? Analysis: The phrase about how much indicates that we need to estimate.To solve this problem, we will estimate the product of these decimal factors.There are many strategies that we could use.

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Understanding Probability

Offer Details: Understanding probability is the first step to being able to make predictions, determining outcomes. Use our lessons below to get started or browse other units. Probability Theory. Description. Introduction to Probability. To begin, we will introduce probability theory through simple experiments.

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Estimating Decimal Quotients Math Goodies

Offer Details: Estimate: Answer: The estimated quotient of 3,041.9 and 23 is 150. Example 4: Estimate the quotient: 1,981.5 ÷ 401. Analysis: We will round 1,981.5 to 2,000 and 401 to 400. Estimate: Answer: The estimated quotient of 1,981.5 and 401 is 5. Now that we have learned how to estimate decimal quotients, we can look at some word problems.

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Math Connections Math Goodies

Offer Details: This phenomenon, known as round-off error, also applies to computers. You can use this topic to integrate math and technology in your classroom. Students will marvel at the way different calculators and computers display varying results when they …

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Online Circle Area Calculator

Offer Details: Our free online Circle Area Calculator has the following parts: Area field. Diameter field. Circumference field. Solve Area button beside each of the above fields. Clear All button. What's great about our calculator is you only have to enter one value to get all the other values. Let's say you are given the diameter of a circle.

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Solutions: Circumference & Area of Circles Math Goodies

Offer Details: Circumference of Circles Exercise Problem Solution 1 The diameter of a nickel is 2 cm. What is the circumference? d = 2 cm; C = 3.14 (2 cm); C = 6.28 cm 2 The circumference of a bicycle wheel is 50.24 in. What is the diameter? C = 50.24 in; d = 50.24 in ÷ 3.14; C = 16 in 3 The radius of a circular rug is 4 ft. What is the circumference? r = 4 ft; d = 8 ft; C = 3.14 (8 ft); C =

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Challenge Exercises: Consumer Math Math Goodies

Offer Details: Directions: Solve each problem below by entering a whole number, a dollar amount with cents, or a percent. If your answer is a percent, do NOT enter the percent symbol.

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Geometry and the Circle Math Goodies

Offer Details: Solution: The diameter of a circle is twice as long as the radius. 5 inches ÷ 2 = 2.5 inches. Answer: The length of DB is 2.5 inches. Summary: A circle is a shape with all points the same distance from its center. A circle is named by its center. The parts of a circle include a radius, diameter and a chord.

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Rounding Decimal Quotients Math Goodies

Offer Details: Example 1: Dana will pay for her new car in 48 monthly payments. If her car loan is for $24,561, then how much will Dana pay each month? Round your answer to nearest cent. Analysis: We need to divide $24,561 into 48 equal amounts. To solve this problem, we will divide $24,561 by 48, and then round the quotient to the nearest hundredth. Step 1: Divide.

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Why Learn Algebra

Offer Details: "Why study algebra?" If you're a parent, it's a question that you will no doubt hear as your children study the subject. If you're a student, it is a very natural question to ask, "What's the point of learning algebra in the first place?" After all, all of the math leading up to algebra that we learned growing up such as addition, multiplication, decimals, fractions, and the

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Percent Applications Worksheet 3 Key

Offer Details: A shirt that regularly sells for $38.50 is on sale for 25% off. By how much money is the shirt being discounted? $9.63 3. If 13 out of 27 students in a computer class are seniors, then what percent of the class is composed of seniors? 48% 4. A meteorologist was accurate 90% of the time, reporting accurately on 45 days.

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Solutions: Topics in Pre-Algebra Math Goodies

Offer Details: A carpenter charges $10 per square foot to lay a floor. If a square-shaped hallway is 6 feet along one side, and the customer has a coupon for $25 off the total, then how much will the floor cost? 10 x 6 2 - 25 = 10 x 36 - 25 = 360 - 25 = 335 Answer: $335

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Estimating Decimal Sums Math Goodies

Offer Details: Thus, $7+ $1 = $8. The estimated sum is $8. Rounding Strategy. Round each decimal to a designated place value, then add to estimate the sum. 3. 7 5 3.8. + 4. 2 9 + 4.3. + 4. 2 9 + 8.1. Rounding each decimal to the nearest tenth, we get an estimated sum of 8.1 or $8.10. Answer: Both $8 and $8.10 are good estimates for the total lunch bill for

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Simple Interest Math Goodies

Offer Details: I = P*R*T. I = (1000)* (0.04)* (0.25) = $10.00. Answer: Julia will have $1,000 in principal plus $10 of interest earned for a total of $1,010.00. In each of the examples above, the interest rate was applied only to the original principal amount in computing the …

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Dependent Events Math Goodies

Offer Details: Experiment 1 involved two compound, dependent events. The probability of choosing a jack on the second pick given that a queen was chosen on the first pick is called a conditional probability. The conditional probability of an event B in relationship to an event A is the probability that event B occurs given that event A has already occurred.The notation for conditional probability is …

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Negation of a Statement Math Goodies

Offer Details: Example 1: Examine the sentences below. 1. Every triangle has three sides. 2. Albany is the capital of New York State. 3. No prime number is even. Each of these sentences is a closed sentence. Definition: A closed sentence is an objective statement which is either true or false. Thus, each closed sentence in Example 1 has a truth value of either true or false as shown …

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Types of Numbers, Part III Math Goodies

Offer Details: Types of Numbers, Part III. A palindrome is a number that reads the same backwards as forwards, such as 121, 363, 3883, 37973, to mention a few. Palindromic numbers can be prime, composite, odd, even, square, cube, and so on. The regular numbers, such as the examples just mentioned, are infinite in quantity. The obvious squares are the squares

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Conditional Probability

Offer Details: The formula for the Conditional Probability of an event can be derived from Multiplication Rule 2 as follows: Start with Multiplication Rule 2. Divide both sides of equation by P (A). Cancel P (A)s on right-hand side of equation. Commute the equation.

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Types of Numbers, Part V Math Goodies

Offer Details: PYTHAGOREAN NUMBERS Pythagorean numbers, more typically referred to as Pythagorean Triples, are those sets of three integers that define all integral primitive and non-primitive Pythagorean right triangles. General formulas for deriving all integer sided right-angled Pythagorean triangles, have been known since the days of Diophantus and the early Greeks.

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Practice Exercises: Consumer Math Math Goodies

Offer Details: Practice Exercises: Consumer Math. Directions: Solve each problem below by entering a whole number, a dollar amount with cents, or a percent. If your answer is a percent, do NOT enter the percent symbol. For each exercise below, click once in the ANSWER BOX, type in your answer and then click ENTER. After you click ENTER, a message will appear

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Consumer Math Math Goodies

Offer Details: Search. Our Consumer Math worksheets are designed to supplement our Consumer Math lessons. Worksheets to Supplement our Lessons. Worksheet 1. Worksheet 1 Key. Worksheet 2. Worksheet 2 Key.

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FREE Step-by-Step Types of Sets Lesson with Interactive

Offer Details: The set of computers that are both on and off. Y = {} The set of triangles with 4 sides. Z = {} The set of months with 32 days. D = Ø: The set of bicycles with no wheels. E = Ø: The set of whole numbers that are odd and even. F = Ø

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Free Step-by-Step Sales Tax Lesson with Interactive

Offer Details: Analysis: Sales tax is the difference between the amount of the total bill and the price of the item. If we divide the sales tax by the price of the item, we get the sales tax rate. Solution: $17.68 - $17.00 = $0.68 and ($0.68) ÷ ($17.00) = 0.04. Answer: The sales tax rate is 4%. Summary: Sales tax is a tax on goods and services purchased and

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Reading and Writing Decimals

Offer Details: Decimal Form. = (5 x 10) + ( 7 x 1) + (4 x ) + (9 x ) = 57.49. - whole-number part -. - fractional part -. In this lesson, you will learn how to read and write decimals. You may use our Place Value and Decimals Chart (PDF) as a visual reference for the examples presented in this lesson. Example 1: Write each mixed number as a decimal.

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Order of Operations with Exponents Math Goodies

Offer Details: Problem: Evaluate this arithmetic expression: 18 + 36 ÷ 32 In the last lesson, we learned how to evaluate an arithmetic expression with more than one operation according to the following rules: Rule 1: Simplify all operations inside parentheses. Rule 2: Perform all multiplications and divisions, working from left to right. Rule 3: Perform all additions and subtractions,

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Writing Algebraic Equations

Offer Details: Writing Algebraic Equations is presented by Math Goodies. Learn to translate open sentences into algebraic equations.

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Math Worksheet Viewer Math Goodies

Offer Details: Math Worksheet Viewer. Search form. Search. To print this worksheet: click the "printer" icon in toolbar below. To save, click the "download" icon. PDF.js …

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Helpful Hints for Taking Math Tests Math Goodies

Offer Details: Helpful Hints for Taking Math Tests (especially standardized tests such as SSAT, PSAT, SAT, etc.) The night before the test get plenty of sleep. Eat well prior to the test (both protein and carbohydrates.) Take your I.D., three of four pencils, your watch (and if allowed, a calculator with freshly installed batteries.) Arrive at the test site a little early.

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Solving Decimal Word Problems Math Goodies

Offer Details: Example 1: If 58 out of 100 students in a school are boys, then write a decimal for the part of the school that consists of boys. Analysis: We can write a fraction and a decimal for the part of the school that consists of boys. fraction decimal 0.58 Answer: 0.58 Example 2: A computer processes information in nanoseconds. A nanosecond is one billionth of a second.

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Challenge Exercises Integer Word Problems Math Goodies

Offer Details: 1. Mt. Everest, the highest elevation in Asia, is 29,028 feet above sea level. The Dead Sea, the lowest elevation, is 1,312 feet below sea level.

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Beal's Conjecture vs. "Positive Zero", Fight Math Goodies

Offer Details: About the Author: Angela Moore graduated from Fairfield University in 2012 and has served as a mathematics tutor for the Connecticut Pre-Engineering Program. Additionally, she is the sole illustrator and author of, Truth, 30% off, a social development comic book series. In 2013, she began working for Yale University in the Human Research

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Order of Operations

Offer Details: Order of Operations math problems and practice presented by Math Goodies. Learn order of operations with our self-paced instruction. Understand Pemdas with order of operations examples and order of operations problems.

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