LO To use boxing up to solve wordy problems
RAG
Key Words: Collaborate, explain, justify
Janet has 40 CDs to
sell
at £3 each. She sells
of them at full price.
She then sells half of
what's left with 20%
off.
The rest she gives to
charity. If they cost
£200 to buy how much
profit does she make?
Today’s Task
On each table there is a wordy problem.
You will have 5 minutes at each table to work together to
solve the problem using boxing up. When the timer rings
you must move in a clockwise direction to the next table.
At each table you should ‘Think, Pair and then Share
with the people opposite.
You can ask for one a hint if necessary. However, when
you ask for help you must use one of the ‘Boxing Up’
questions.
Rules
Attempt every problem. Even if you can’t get to a
final answer, you should be able to write something
in each box.
You can only ask for help using one of the ‘Boxing
Up’ questions:What is the question asking me?
What Maths will I be using.
What working out do I need to do?
How can I check that my answer is correct?
Percentages – Booking a holiday
Salima books a 7-night
holiday in April for two
adults.
The travel agent adds a
percentage surcharge to the
cost of the holiday for
booking fees.
Salima’s final bill is £642.60
What was the percentage
surcharge?
Ratio & Percentages – Tickets
In 2006, the production cost of the
Newton School play was £370.
In 2007, due to the fact that the
school had to hire some special
costumes the production cost
increased by 12%.
In 2006, the total number of tickets
sold for the play was 732. They sold
1/6 more tickets in 2007
In both years the ratio of adult
tickets to student tickets was 42 :
19.
In 2006, adult tickets cost £3 each
and student tickets cost £1.50 each.
In 2007 prices were reduced by
10%.
Work out the profit or loss made by
Newton School in 2006 and 2007.
Percentages – Clothes
Chris owns a clothes shop.
He bought 50 shirts at £12 for each
shirt.
He chose the selling price of each shirt
so that he would make a profit of 30%
on each shirt.
He sold 20 shirts at this price.
Chris then reduced the selling price of
each shirt by 15%.
He then sold the remaining shirts at this
reduced selling price.
Has Chris made a profit or loss?
You must explain your answer clearly.
Formula – Cooking a Turkey
Here are instructions for cooking a
turkey.
The Turkey is 7 kilogram
Cook for 40 minutes per kilogram.
Then cook for an extra 15 minutes
The Turkey is cooked by 12.45pm.
At what time did she start to cook it?
Money – Gas Bill
Mr Black is looking at cheaper ways of paying for the gas
he uses.
He has received the following details from two
companies.
GASCOM
Standing charge per month: £1.00
Cost per kWh: £2.99
UGAS
Standing charge per month: £3.78
Cost per kWh: £2.38
Mr Black estimates that he will use 4000 kWh in the next
3 months.
From which company would his gas bill be cheaper and
by how much?
Plenary
Its time to Peer Assess each others work
and ‘magpie’ good ideas?
When you peer assess remember to use
What Went Well ............
Even Better If ................