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Percentages II (Learner Version)
Section 2: Activity
Page 1: Cow of a problem
Suppose a dairy farm has 150 Jersey cows and 250 Fresian cows. That’s 400 cows altogether. What percentage of the herd are Jerseys? 400 cows
150 Jerseys
Section 2: Activity
Page 3: Sporty Spice
Suppose a basketball player sinks 45 out of 60 shots at goal.What is her shooting percentage?
60 Shots
45 Shots
Section 2: Activity
Page 5: Smoking Statistics
A group of 200 young adults are surveyed.60 of them smoke regularly.What percentage of the group are smokers?
200 adults
60 smokers
Section 3: Examples
Page 1: Turtle Tragedy
Of the 1200 baby turtles that hatch out only 384 make it to the sea.
The rest are eaten by predators.
What percentage of baby turtles make it?
Section 3: Examples
Page 2: Crayfish Catch
Last year only 25% of the crayfish you caught were under sized.
This year you put back 16 of the 48 crayfish you caught.
Is the percentage of undersized crayfish increasing?
Section 3: Examples
Page 3: Sharp Shooting
Karl got 60 of his 75 arrows on target.
What percentage was that?
Section 3: Examples
Page 4: Whale of a whaleA baby humpback at birth measures 4.2 metres long and weighs 2.5 tonnes.
After one month it measures 6.0 metres long and weighs 4.0 tonnes.
By what percentages has its length and weight grown?
The plasma television cost $660 (GST inclusive).How much of the price was GST?
At 10% GST...
Page 10: An historical view
Section 2: Activity
The plasma television cost $1,200 (GST inclusive).How much of the price was GST?
At 12.5% GST...
Page 13: Another historical view
Section 2: Activity
Section 2: Activity
Page 18: An example
You are working out an expense claim for your boss.You bought a digital camera for $230.00 (GST included).How much of the price was GST?
Section 2: Activity
Page 19: Another example
You put $69 of petrol in you car.How much of the price is GST and how much does the garage get?
Section 2: Activity
Page 21: Petrol Again
You put $69 of petrol in you car.How much of the price is GST and how much does the garage get?Use the 3/23 method to work this out.
Section 2: Activity
Page 23: Petrol Again and Again
You put $69 of petrol in you car.How much does the garage get from the sale?Use divide by 1.15 method to work this out.
Section 3: Examples
Page 5: Add GST
The GST exclusive price of a pair of jeans as $72.00How much GST will be added on and how much in total will you pay for the jeans?
Section 3: Examples
Page 5: Add GST
GST is often charged on the sale of land.A small block has a GST exclusive price of $483,000.How much GST will be charged on top of the price?
Section 3: Examples
Page 7:The Hoata family bought a newLaptop for $2,990 (incl. GST).“I use this for my business,” said Paora, “So I can claim back the GST.”
How much GST can Paora claim back?
Section 3: Examples
Page 8: Taxi Fare
You pay $57.50 for a taxi trip.How much of the cost is GST and how much does the taxi driver get?
Section 4: Assessment
Page 1: New Zealand has one of the highest rates of car ownership in the world.There are about 2.5 million cars for about 4 million people.What percentage of 4 million is 2.5 million?
Section 4: Assessment
Page 2: GST Burger Please
Even a hamburger and fries has GST included in the price.If the GST inclusive price is $5.80 how much GST are you paying?