VU21451- Participate in short simple exchanges: Session 2

Solutions to Handout Puzzle

Puzzle #1 solution:

5 − 5 + 5 − 5 = 0

5 − 5 + 5 ÷5 = 1

5 ÷5 + 5 ÷5 = 1 + 1 = 2

5 × (5 − 5) + 5 = 5

Puzzle #2 solution:

Puzzle #3 solution:

Puzzle #4:

The trick is to find out how much money you make in 30 days if you get 1 cent the first day, 2 cents the second day, 4 cents the third day, and so on... Day 1: 1 cents

Day 2: 2 cents

Day 3: 4 cents

Day 4: 8 cents

Day 5: 16 cents

Day 6: 32 cents

Day 7: 64 cents

Day 8: 128 cents

Day 9: 256 cents

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Keep mutliplying by 2

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Day 30: 536,870,912 cents

536,870,912 cents/100 = 5,368,709.12 dollars and 5,368,709.12 is bigger than 5,000,000

Therefore, you are better off taking 1 cent the first day, 2 cents the second day, 4 cents the third day, and so on... until the 30th day


Puzzle #5:

Answer = 30

 

Let's have some numbers fun on the computer and internet! Follow your teacher's instructions:

 

1.

http://www.memozor.com/memory-game-online-free/for-adults/difficult-memory/numbers


2.

http://www.bbc.co.uk/skillswise/game/ma02symb-game-comparing-numbers


3.

http://www.mathiqgames.com/division-games/Cannon-Divisor.html


4.

http://www.mathiqgames.com/Quick-Arrows.html


5.

http://www.mathiqgames.com/arithmetic-games/Balloons.html


6.

http://www.mathiqgames.com/GeometryAngles.html


7.

http://www.mathplayground.com/spaceracer_multiplication.html


8.

http://www.mathplayground.com/ASB_Division_Derby.html