October 21st

Pick 3 of the percentages below and draw them pictorially:

25% 75% 50% 20% 30% 80%

- How to manipulate percentages, ratios, rates & proportions -

Approximately October 20th to November 26th

By the end of this unit, we will know how to apply & manipulate percentages,

ratios, rates, and proportions.This will help us with our Data &

Probability unit at the end of the year.We will learn how to work with:

- Percentages- Ratios & Rates- Proportional Reasoning

Why do we need to know this!?!

What is a percent?

A percent is the number of parts per 100.- The numerator of a fraction with the denominator of 100.(ex)

How can we draw a picture of a percent?

http://nlvm.usu.edu/en/nav/frames_asid_160_g_3_t_1.html?open=activities&from=category_g_3_t_1.html

You are going to get a Post-It Note stuck to your back that has a percentage on it.

(Between 1-100)

Using ONLY Yes or No Questions, attempt to figure out what percentage is on your

Post-It Note.

When done, place it on your front & sit in a circle around the couch area.

October 22nd

Write each percent as a fraction and as a decimal:

3% 51% 98% 29%

Convert Percentages to Fractions

- If a whole number, write the number as a fraction over top of a denominator of 100(ex) 73% 73 100

Convert Percentages to Fractions

- If a decimal, write the number as a proper fraction over top of a denominator of 1 with the appropriate number of zeroes

(ex) 73.5% 735 1000

Convert Percentages to Fractions

63.5%78.92%

54%23.7%

Convert Fractions to Percentages

- Divide the numerator by the denominator

- Multiply your result by 100(ex) 15 = 0.8333... x 100 = 83.3% 18

Convert Fractions to Percentages

4/5

35/79

12/100

72/99

October 23rd

Steven makes 17/19 of his blocks successfully in football.

What is the percentage of blocks that Steven is unsuccessful at?

Complete page 239-241 in the textbook,

questions 6-21

October 28th – Hand In Day!

Bob got 16/20 on his math test.Georgie got 13/15 on his math test.

Who got the better mark?Please show all your work.

October 29th

Please represent the following fractions as percentages and decimals:

12 78 718 92 11

October 30th Kowan collected 172 pieces of candy while

out for Halloween.

He decided to separate them by candy type and realized he had 68 pieces of his

favourite candy: Kit Kat bars.

What % of Kowan’s total Halloween candy was Kit Kat bars?

October 31st – Happy Halloween!! There are 67 houses on Sam’s trick or

treat route.She was able to go to 51 houses before

her candy bag was full.What % of the houses on her route did

she get to?Can you represent this % as a fraction

and as a decimal?

November 1st – Hand In Day!!

Halloween candy is now 63% off!You can now buy boxes at I.G.A for $4.

What did they cost yesterday?

Please show all your work.

November 4th

The ratio of neon shirts to neon pants in Gaby’s closest is 11:7.

- Write the ratios of shirts to the total number of garments.- Write the ratio in bullet point 1 as a percent

What are ratios & rates?A ratio is a comparison between quantities of the same unit- Can be between two or more quantities(ex) There are 9 girls in Grade 8 compared to 16 total students. The ratio of girls to all Grade 8 students is 9 to 16 9:16

What are ratios & rates?

A rate is a comparison between quantities of different units(ex) There are 14 tables in Mrs. Thompson’s room compared to 16 Grade 8 students. The rate of tables to Grade 8 students is 14 to 16 14:16

Jade’s Halloween stash contains 8 red, 5 green, 2 orange, 3 purple, 1 blue, & 6 yellow candies:

- What are the following ratios:- red:purple- green:blue- purple:blue:green- orange & yellow:total candies

- Suppose she ate 3 red, 2 green, & 4 yellow candies. What would the ratios be now?

Do the following sentences use ratios or rates?

- The car was travelling 60km/hr.- The punch has 3 cups of cranberry

juice and 4 cups of ginger-ale.- Katie earns $8/hr at her part-time job.- The soccer team won 25 games &

love 15 games.

Using your Smart Device or an iPad,open up the following webpage:

http://padlet.com/wall/grade8math

November 5th Which is the greater rate?

- Alexis earns $24 in 3 hr or $36 in 4 hr.

- Jessie charges $4.50 for 6 muffins or $6.00 for a dozen muffins

- Kurtis buys a 250 mL milk for $0.99 or a 1L milk for $3.59

November 6thDetermine whether the sentence expresses a

ratio or a rate.Write the rate or ratio for each:

- The cost of pecans is $10.89 for each kilogram.

- 3 out of every 7 people wear glasses.- Mr. Thompson travelled 620km in 6 hr.- In 7 games, the team scored a total of 23

points.

November 7thA pencil case contains 7 yellow, 3 red, 1

black, and 5 green pencil crayons. Write each ratio

- red:green- yellow:red- black:total pencil crayons- yellow:red:green

Suppose 2 yellow & 2 green were lost, rewrite the ratios with your new stats.

Using the provided template, create a page for your Interactive Notebook

summarizing.......

what?

Use your own words!

November 12th – Hand In Day!

Mrs. Thompson received 92% on her entrance exam.

Write her result as a simplified fraction and as a decimal.

What would this look like as a ratio?Could this also be expressed as a rate? If

so, how?

November 13thWrite the following ratios as percentages.

- 3 out of every 7 people wear jeans.

- 14 of the total 35 candies are chocolate.

November 14th

Alexis normally gets paid $25 a week to work in the canteen.

At the end of the term she gets a bonus of 60% of her weekly wage.How much is her bonus cheque?

November 18th - Hand In Day!

Mrs. V can knit 5 pairs of mittens every 27 days.

Is this a rate or a ratio?She uses 3 balls of yarn per pair of

mittens. If she has 32 balls of yarn, what percent did she use up knitting her 5

pairs of mittens?