Section 3.3 Evaluating the Percent of a Number

Slides:

Advertisements

Similar presentations

6.2 Converting Fractions, Decimals, and Percents.

Advertisements

Copyright © 2005 Pearson Education, Inc. 5.3 The Rational Numbers.

I can carry out simple percentage calculations.

Lesson 4.2 Fractions, Decimals and Percents

PERCENT PROPORTIONS Using Proportions 4-1. Vocabulary Review Ratio: The comparison of two numbers (written in Algebra as a fraction) Proportion: When.

This presentation is based on KEY MATHS 7 (1) Press the LEFT mouse button to move on.

Solving Percent Problems Section 6.5. Objectives Solve percent problems using the formula Solve percent problems using a proportion.

Fractions * Decimals * Percents The student will learn how to convert various fractions, decimals and percentages.

Writing Decimals and Fractions as Percents  It means Per – 100 (like 100 cents in a dollar)  When we say percent, we mean, how many equal parts of.

Converting between Decimals, Fractions and Percentages

Ratios! Station SIX DIRECTIONS: Determine the correct answers when comparing numbers in ratio form. Converting: Fraction ratio percentage decimal.

Numbers Percentage of a number.

OPERATIONS USING FRACTIONS. 1. Add, subtract, multiply and divide fractions with and without a calculator. 2. Convert between equivalent forms of fractions.

Write Equivalent Fractions

Fractions, decimals and percentages

Work Based Learning Functional Skills Maths Session 1 Fractions, Decimals and Percentages.

Percents To Reduced Fractions Decimals To Percents.

Copyright © Texas Education Agency, All rights reserved..

Percentages Percent comes from ‘per’ ‘cent’ which means ‘every’ ‘hundred’. Therefore: 20% means 20 out of every hundred. That is 20 ÷ % = = 20 ÷

Using Equations to Solve Percent Problems

AGENDA WARM-UP INVESTIGATION 1 CORRECTIONS LESSON 11 HOMEWORK QUESTIONS?? LESSON 12 EXIT CARD.

HAWKES LEARNING SYSTEMS Students Matter. Success Counts. Copyright © 2013 by Hawkes Learning Systems/Quant Systems, Inc. All rights reserved. Section 4.6.

Fractions, Decimals, Percentages

Fractions, Decimals & % Lesson #26 & #27. Fraction to Decimal  A fraction is like a division  1 fifth is the same as 1 ÷ 5  1 = Divide the.

Copyright © 2015, 2011, and 2007 Pearson Education, Inc. 1 Chapter 3 Percents Section 1 Writing Decimals and Fractions as Percents.

Scientific Notation 1. Scientific notation is a way to shorten a large number (makes using it in calculations easier) 2.

Percentages. What Are Percentages? A percentage is a number expressed as a fraction of 100. We use the percent sign % when representing numbers as a percentage.

Opener Evaluate when x = 4.. Test Review Simplifying Exponent Rules.

Conversions % Multiply by a special form of 1 Divide 2 by 5

Working with Percentages. Writing percentages as fractions ‘Percent’ means ‘out of 100’. To write a percentage as a fraction we write it over a hundred.

Converting to Percents. Decimals to Percents Decimals to Percents When converting decimals to percents, first you need to multiply the decimal with one.

Copyright © Cengage Learning. All rights reserved. Functions 1 Basic Concepts.

Copyright © Cengage Learning. All rights reserved. Functions 1 Basic Concepts.

Section 5-1 p. 206 Goal – to write ratios as percents and vice versa.

Copyright © Cengage Learning. All rights reserved. Section 3.1 Measures of Central Tendency: Mode, Median, and Mean.

Fraction – decimal Fraction – percent Decimal – fraction Decimal – percent Percent – decimal Percent – fraction.

Warm Up Write each fraction as a decimal. Homework- Page 74 # 1-26 all

Objectives Evaluate and multiply by powers of 10.

Warm-Up Evaluate when x = 4..

Convert to a Percent %.

The word percent means out of 100

Using Proportions – Less 6.6

Warm-up September 14, 2017 Change to a decimal: 87% 7%

Percents, Fractions, and Decimals

Decimals > Fractions > Percentages

CHAPTER 3 - Percent Section 3.1

Section 5.2 Multiplying, Dividing, and Rationalizing Radicals:

Pre Calculus 11 Section 2.1b Special Triangles

Finding a Percent of a Number

Section 2.2 Geometric Sequences

Fractions, Decimals & Percentages

Do Now In your purple books: Page 24 #11.

Unit 2. Day 14..

Section 4.5 Factoring Sums and Difference of Powers

Section 2.2 Zero and Negative Exponents

Ch 3 Practice Problems: Percents

Section 2.5 Operations with Radicals

Percentage increase and decrease

Percents and Decimals Objective:

Percentages Year 5-6 (age 9-11)

Section 3.1 Radians and Angles in Standard Position

Warm-Up Lesson 11 hw questions? Lesson 12 Exit card

Converting to Percentages

Converting between Percentages, Decimals and Fractions

Section 2.6 Rationalizing Radicals

Chapter 3 Percents Copyright © 2020 by Mosby, an imprint of Elsevier Inc. All rights reserved.

Section 4.6 Completing the Square

Math 9 Honors Section 1.1 Fractions and Decimals

Part Two: Introducing Percentages and Decimals

Section 1.3 Prime Factorization

Presentation transcript:

Section 3.3 Evaluating the Percent of a Number © Copyright all rights reserved to Homework depot: www.BCMath.ca

Review: Write each of the following percentages in decimal form © Copyright all rights reserved to Homework depot: www.BCMath.ca

Percentage of a Number When looking for the “percentage” of a number, multiply the number by the percentage Sometimes it’s easier to convert the percentage to decimal form first Ie: Find 50% of $60 So 50% of $60 is $30 Some percentages are easy to find, like 10% is 0.1, 20% is 0.2, 30% is 0.3 ,.... and 100% is 1.00 Note: When asked to find 100% of a number, it is basically the number itself © Copyright all rights reserved to Homework depot: www.BCMath.ca

Ex: Evaluate the given percentage for each number: © Copyright all rights reserved to Homework depot: www.BCMath.ca

Note: all percentages can be written as a fraction When looking for the percentage of a number, it may be easier to just multiply by the corresponding fraction Ie: Find 75% of 124 75% is equal to ¾ In the text book, there are questions that want us to find a fraction of a percent ie: Find ¼% of 50 ¼ % is not the same as 0.25 it is actually 0.25 ÷ 100 Which is 0.0025 So multiply the number by the fraction AND then divide by 100 © Copyright all rights reserved to Homework depot: www.BCMath.ca

Practice: Find the percentage of each number When asked to find a fractional percent of a number, multiply that number by the fraction and divide by 100

In some cases, it is better to breakup the percentage as the sum of two or more percentages that are easier to calculate Ie: Calculate 11% of 350 © Copyright all rights reserved to Homework depot: www.BCMath.ca

Practice: Jason is applying for a program at UBC Practice: Jason is applying for a program at UBC. In order to be accepted he needs to get at least 68% on the entrance exam. If the maximum score on the exam is 120pts, what is the minimum score that Jason needs to get? Jason needs 81.6 points on the entrance exam to be accepted in the program at UBC © Copyright all rights reserved to Homework depot: www.BCMath.ca

Homework: © Copyright all rights reserved to Homework depot: www.BCMath.ca