Percent of a Number 2.7 p. 147.

Slides:

Advertisements

Similar presentations

Changing Percents to a Fraction #3 To change a percent to a fraction you need to first write the numerator over 100. Next simplify the fraction.

Advertisements

Fractions, Decimals, & Percent Conversions

Finding a Percent of a Number Lesson 6-7. Using a Proportion Set up a proportion that uses the percent over 100. Cross multiply to write an equation.

Warm Up Change each percent to a decimal % % % 4. 1%

Fractions, Percents & Decimals

Lesson 4.2 Fractions, Decimals and Percents

Equivalent Fractions, Decimals and Fractions

Fractions, Decimals, & Percents. Percent… A ratio that compares a number to 100 % = 100 Parts per hundred Percents can be between 1% and 100%, greater.

8-1 Percent and Estimation Pages Indicator(s)  N8 Develop and analyze algorithms for computing with percents and demonstrate fluency in use.

Decimals and Percents Goal: Change a percent to a decimal Multiply decimals.

Fractions, Decimals and Percents Percent to Decimal 1.Start where the decimal is left. 2. Move the decimal places to the 2.

Percent Chapter Seven. Percents, Decimals, and Fractions Section 7.1.

© T Madas. Fill in this negative multiplication table. [the numbers multiplied are all whole negative & positive numbers]

Exercise Rename as an equivalent fraction with a denominator of 100.

Write Equivalent Fractions

Ms. Nixon-Williams Grade 6 Honors Fractions, Decimals, Percent, Ratios Grade 6 Honors Fractions, Decimals, Percent, Ratios.

Finding Percents of numbers Using the Is over Of technique in conjunction with drawing percent bars.

Percentages Lesson After completing this lesson, you will be able to say: I can define a percentage as a ratio of a number to 100. I can calculate.

Percents To Reduced Fractions Decimals To Percents.

Finding a Percent of a Number

Dividing a Decimal by a Decimal. Dividing Whole Numbers 12 ÷ 2 = 120 ÷ 20 = 1200 ÷ 200 = ÷ 2000 = Multiply both 12 and 2 by 10 Multiply.

5 Minute Check Complete on the back of your homework. Write each percent as a fraction % 2. 15% 3. 75% 4. 8%

2-8 Percents Warm Up Lesson Presentation Lesson Quiz Holt Algebra 1.

Lesson Topic: Solving Percent Problems Lesson Objective: I can…  Find the percent of a quantity. Given a part and the percent, I can solve problems involving.

Equivalents ½ ½ ⅔.

We use the ( % ) symbol instead of writing fractions with a denominator of 100.

Holt Algebra Percents 2-8 Percents Holt Algebra 1 Lesson Quiz Lesson Quiz Lesson Presentation Lesson Presentation Warm Up Warm Up.

Multiplication Find the missing value x __ = 32.

5 Minute Check Find the following. 1. What is.15 written as a percent? 2. What is written as a percent? 3. What is 7 written as a percent? 4. What.

Percent of a Number.

Percents Greater that 100% or Less than 1%

Finding a Percent of a Number

2-8 Percents Warm Up Lesson Presentation Lesson Quiz Holt Algebra 1.

Multiplication table. x

Finding a Percent of a Number

Equivalent Ratios.

Percents and Fractions

Proportions and Percent Equations

Finding a Percent of a Number

Using Ratios to convert FDP

Fractions, Decimals and Percents

2-8 Percents Warm Up Lesson Presentation Lesson Quiz Holt Algebra 1.

Finding a Percent of a Number

Finding the Percent of a Number

FRACTIONS, DECIMALS AND PERCENTS

FRACTIONS, DECIMALS AND PERCENTS

Healthy Food By Angus Cousins.

FRACTIONS, DECIMALS AND PERCENTS

Finding a Percent of a Number

Finding a Percent of a Number

Warm Up Problems (We are going to need calculators today – get one now.) Write each fraction as a decimal

Applications of Percents

Multiples and Factors.

FRACTIONS, DECIMALS AND PERCENTS

Percents and Decimals Objective:

Warm Up Change each percent to a decimal % % % 4. 1%

x/÷ Numbers Year 3-4 – Multiply and divide a multiple of 10

Fractions Learn to love them!!!.

FRACTIONS, DECIMALS AND PERCENTS

Percents, Fractions, and Decimals

FINDING A PERCENT OF A NUMBER

Ordering and Comparing

can you distinguish between multiplication and division!

Objective - To multiply decimals and whole numbers.

FRACTIONS, DECIMALS AND PERCENTS

Chapter 7 – 3 Fractions, Decimals, and Percents

Presentation transcript:

Percent of a Number 2.7 p. 147

30 34 30 36 44 15 30 We created equivalent ratios. By doubling the 100 to 200, we just had to double the first terms in each of the ratios. 30 17 34 34 15 30 30 18 36 36 12 24 24

Snack Ratio/100 ? / 200 Fruit 23 Cheese 15 Veggies 17 Cookies Chips 18 No snack 22 Total 100 200 46 30 34 36 44 ( x 2) In this ratio tables, instead of using the % sign, you see the total of 100 is used.

15 100 = 45 300 15 100 𝑥 300 1

𝑝𝑎𝑟𝑡 𝑤ℎ𝑜𝑙𝑒 = 45 300

Let’s talk about the values represented on this bar. 10% of 300?? 30 Half of this???? 15 15% = 10% + 5%

18% of 300 = .18(300) = 54 18 (3) 100 (3) = 54 300 Which number represented the part? Which number represented the whole?

Percents greater than 100 or less than 1 145% of 320 220% of 65 .25% of 58 1.45(320) = 2.20(65) = .0025 (58) = .145 464 143 Which number represented the part? Which number represented the whole?

Which number represented the part? Which number represented the whole? 145%= 145 100 ? 29 20 100% of 320 would be 320. More than 100% of a number will be greater than the number. 29 2 (10) 𝑥 32 (10) 1 29(16) 1 145% 𝑜𝑓 320=1.45 320 =464

11 5 220 100 = 22 10 = 11 5 13 1 11 5 65 Which number represented the part? Which number represented the whole? 11 13 143 143

.0085 x 600 = n 1.28 x 550 = n .003 x 200 = n = 5.1 = 704 = .6 Which numbers represented the parts? Which numbers represented the whole?

Which numbers represented the parts? The decimal multiplication method is the best for these values. 1.28 x 550 = n .0085 x 600 = n .003 x 200 = n = 5.1 = 704 = .6 Which numbers represented the parts? Which numbers represented the whole?

20%, or 1/5 of the 70 players competed in soccer. What is 1/5 of 70?

What is 15% of 20? .15 x 20 = ?? = 3 students Which number represented the part? Which number represented the whole?

.32 x 60 = .0055 x 220 = 2.75 x 4 = 19.2 1.21 11 32(60) 100 Can anyone think of this in a different way? 32(6) 10 = 192 10 = Which number represented the part? Which number represented the whole?

There are several ways, but they one you will use most often is: Write the percent as a decimal Multiply the decimal (part) by the other number (whole) to find the missing part.