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Transcript of Number. Writer: writes answers on whiteboard Thinker: on paper/in head. Resources Manager: looks...
GROUP RULES: DECIDE ON ROLES Writer: writes answers on whiteboard Thinker: on paper/in head. Resources Manager: looks up
notes/textbooks All members: ensure group is positive &
working at a reasonable noise level.
All people must participate. Random checks may be made to ensure all group members know how to get their correct answer. (Bonus points available for this)
HOW TO PLAY Group x chooses the question Time limit given When time is up, group x has 1st option
to answer. If correct winner takes all points. If incorrect, all other correct groups get
half points. Next group in turn (clockwise).
CHOOSE YOUR QUESTION!Money Fractions Percentage
sIntegers & time
10 10 10 10
20 20 20 20
30 30 30 30
40 40 40 40
100 100 100 100
MONEY 10 POINTS Joe buys a shirt in a 15% off
sale. It’s normal price was $18. What will Joe pay?
$15.30
MONEY 40 POINTS James invests $500 in an account
with a 6% interest rate (p.a). How much will James have after 10years (assume interest is compounded yearly)
500x1.0610
=$895
MONEY 100 POINTS Last year, beef exported to the USA was
earning US $2.29/kg. The total revenue from beef export to the USA was NZ $978.2million. A) The exchange rate was NZ$1:US$0.515
How much beef was exported to the USA?
B) In total 5.6x108kg of beef was exported around the world. What % of this went to the USA?
2.2x108kg 39%
FRACTIONS 20 POINTS
12/84=1/7
A chocolate factory increased the weight of their chocolates from 84g to 96g. Express the increase in weight as a fraction (simplify)
FRACTIONS 30 POINTS Jean has a 2L bottle of orange drink. 3/5
of it is orange juice and the rest is water (well mixed!)
Jean drinks 1/8 of the bottle and then fills it up with water.
What fraction of the of the bottle is water now?
19/40
FRACTIONS 40 POINTS
$26.25
After a price increase of 2/15, a saw now costs $29.75. What was the price before the increase?
FRACTIONS 100 POINTS Robyn is renovating her bathroom. The area to be
tiled is 9m2. She has chosen tiles which come in boxes of 40 at $65 a box; 36 tiles cover 1m2. Tiles cannot be sold seperately. Her DIY book advises buying 8% extra tiles to cover breakages and cutting halves.
A) Robyn follows the advice of her book. Calculate the cost of the tiles for the bathroom.
B) Robyn used only 330 tiles on the job. She wants to use the leftover tiles to cover an area in the toilet. What fraction of a square metre will she be able to tile assuming she doesn’t break any tiles. a)Need 324+8%=350tiles: 9
boxes: $585 b) 30 tiles left: 30/36 or 5/6m2
PERCENTAGES 30 POINTS GST is 15%. What would the price of a
car be (including GST) if it costs $27300 before GST?
$31395
PERCENTAGES 100 POINTS
A: 5% B: $64591.50-39995=$24596.50 extra
c) $248.43.
A car dealer offers a car for $39995 cash or $2000 deposit with weekly repayments of the balance plus 14% pa of the original remaining balance for 5 years. A) What percentage of the price is the deposit? B) How much extra is paid in total with the weekly repayment scheme? C) How much is each weekly payment?
INTEGERS 40 POINTS Hemi & Jake share a job clearing Mrs
McDonald’s garden. Hemi worked for 5h 45min, Jake worked for 2h 20min.
A) Write the ratio of Hemi’s time to Jake’s time in simplest form
B) Mrs McDonald paid $75 cash for the job. What is Hemi’s share?
a)345:140=69:28b) $53.35