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Year 10 revision jeapordy

Year 10 revision jeapordy. Number. 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.

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Year 10 revision jeapordy

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  1. Year 10 revision jeapordy Number

  2. 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)

  3. 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).

  4. Choose your question!

  5. Money 10 POINTS • Joe buys a shirt in a 15% off sale. It’s normal price was $18. What will Joe pay? $15.30

  6. Money 20 points • What would 7 books at $4.65 cost in total? $32.55

  7. money 30 points • Share $63 in a ratio of 3:5:1 $21: $35: $7

  8. 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

  9. 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$0.515How 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%

  10. Fractions 10 POINTS Simplify your answer

  11. Fractions 20 POINTS • A chocolate factory increased the weight of their chocolates from 84g to 96g. Express the increase in weight as a fraction (simplify) 12/84=1/7

  12. 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

  13. fractions 40 points • After a price increase of 2/15, a saw now costs $29.75. What was the price before the increase? $26.25

  14. 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. Need 324+8%=350tiles: 9 boxes: $585 b) 30 tiles left: 30/36 or 5/6m2

  15. percentages 10 points Find 25% of 160kg 40kg

  16. percentages 20 points Cheryl got 18 out of 25 in a recent math test. What percentage is this? 72%

  17. Percentages 30 points • GST is 15%. What would the price of a car be (including GST) if it costs $27300 before GST? $31395

  18. percentages 40 points • 18% of a volume is 450mL. What is the total volume? 2500mL

  19. Percentages 100 points 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? A: 5% B: $64591.50-39995=$24596.50 extra c) $248.43.

  20. Integers 10 POINTS • How many seconds in 8 minutes? 480

  21. integers 20 POINTS • 285÷5 57

  22. integers 30 points • Explain why -52 and (-5)2 are different.

  23. 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=69:28 b) $53.35

  24. integers 100 POINTS • Two numbers (x & y) add to 87 and have a difference of 29. • A: Use this information to write two equations. • B: Solve the equations to find x and y. x+y=87x-y=29add equations: 2x=116 x=58x+y=87 so y=29

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