Chapter 4Fractions,
Decimals, and Percent.
Day 1
Vocabulary
an equation that shows two ratios are equivalent.
a number that represents part of a whole or part of a set.
Percent -
Proportion -
Rational Number -
Fraction -
Decimal-
Number Line -
a representation of a real number using the base ten and decimal notation.
a ratio that compares a number to 100.
any number that can be written as a fraction.
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
Deposit- an amount added to an account or place.
Discount- an amount subtracted from the original price.
Ratio-
Taxes-
Tips-
a comparison of two or more numbers.
an amount of money added to a total bill.
an amount of money given to a service provided as gratitude.
I Can….
Convert fractions, decimals, and percent
using the standard algorithm.
Converting NumbersEssential Understanding:
•To convert a fraction to a decimalSimply divide the numerator by the denominator. Your answer will be a decimal. Thus, you will need to add a decimal and zeros to your dividend.Example:
•To convert a decimal to a percentMultiply the decimal by 100. Using your knowledge of the powers of ten, you can do this mentally by moving the decimal two place to the right.Example:
•To convert a percent to a decimalDivide the percent by 100. Using your knowledge of powers of ten, you can do this mentally by moving the decimal two places to the left.Example:
•To convert a decimal to a fractionYou simply write it like you read it.Example:
Exit TicketComplete the following equivalency chart.
Ratio Fraction Decimal Percent
1 / 2
0.45
77%
5:8
1 / 5
0.8
27%
3:4
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 2
Bell WorkDarion is saving up his allowance to buy a new video
game system. The game system, he wants, cost $244.36.
His dad offers to pay 25% of the price, if he gets all As.
How much money has his dad offered to pay?
Hint- Try thinking of the percent as a fraction in simplest form.
Homework Check
Vocabulary
an equation that shows two ratios are equivalent.
a number that represents part of a whole or part of a set.
Percent -
Proportion -
Rational Number -
Fraction -
Decimal-
Number Line -
a representation of a real number using the base ten and decimal notation.
a ratio that compares a number to 100.
any number that can be written as a fraction.
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
Deposit- an amount added to an account or place.
Discount- an amount subtracted from the original price.
Ratio-
Taxes-
Tips-
a comparison of two or more numbers.
an amount of money added to a total bill.
an amount of money given to a service provided as gratitude.
I Can….
Calculate percent of a number using multiplication.
Finding the Percent of a Number
Essential Understanding:•You can use multiplication to find the percent of a number.•This can be done by changing the percent to a decimal or a fraction, as they both represent the same ratio of part to whole.
•To find the percent of a number using decimalsExample:
•To find the percent of a number using fractions.Example:
Exit Ticket
Solve the following equation in two different ways.
17% of 200 =
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 3
Bell Work
Solve the following equation in two different ways.
A recent survey shows that 65% of students like
school lunch. If there are 800 students in the school,
how many like school lunch?
Homework Check
Vocabulary
an equation that shows two ratios are equivalent.
a number that represents part of a whole or part of a set.
Percent -
Proportion -
Rational Number -
Fraction -
Decimal-
Number Line -
a representation of a real number using the base ten and decimal notation.
a ratio that compares a number to 100.
any number that can be written as a fraction.
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
Deposit- an amount added to an account or place.
Discount- an amount subtracted from the original price.
Ratio-
Taxes-
Tips-
a comparison of two or more numbers.
an amount of money added to a total bill.
an amount of money given to a service provided as gratitude.
I Can….
Calculate percent of a number using
proportional reasoning.
Percent of a NumberEssential Understanding:
•You can calculate the percent of a number using proportional reasoning. As, a percent is a ratio
per 100. Think converting numbers from percent to decimal to fraction.
Example:
•You can use this knowledge to create equivalent proportions.
Example:
•You can calculate the part in two ways
Scaling-
Example
Cross Product/ One step Equations-
Example:
Exit Ticket
Use proportional reasoning to solve.
20% of 300 =
75% of 144 =
Wrap it Up
• Review
• Questions
• Exit Tickets
Day 4
Bell WorkUse proportional reasoning to solve.
Sarah tells the student council the have raised 80% 0f the
funds the need for the up coming dance. If they have
already raised $164.00, how much do they need for the
dance?
Homework Check
Vocabulary
an equation that shows two ratios are equivalent.
a number that represents part of a whole or part of a set.
Percent -
Proportion -
Rational Number -
Fraction -
Decimal-
Number Line -
a representation of a real number using the base ten and decimal notation.
a ratio that compares a number to 100.
any number that can be written as a fraction.
a line on which numbers are marked at intervals, used to illustrate simple numerical operations.
Deposit- an amount added to an account or place.
Discount- an amount subtracted from the original price.
Ratio-
Taxes-
Tips-
a comparison of two or more numbers.
an amount of money added to a total bill.
an amount of money given to a service provided as gratitude.
I Can….
Calculate percent less than 1% and greater than
100%.
Percentages less than and greater than
Essential Understandings:
•Occasionally, you will have percentages that are less than 1% or greater than 100%
•Percentages less than 1% represent a very small fractionExample:
•Percentages greater than 100% represent a mixed number. Meaning you have more than 1 whole piece or set.Example:
pOp Quiz
• Take out a pencil and a calculator
• Clear everything else from your desk
Exit Ticket
Create a rule for solving the following equation.
15 is 20% of what number?
Wrap it Up
• Review
• Questions
• Exit Tickets