1. Mathematical Treasure-hunt:
Cut out each of the question slides and place them around the room, stick them on the walls if you wish.
Print out and distribute the answer sheet, one per pupil, or team, and set them off to find the answers.
The correct answer is:

2. Name: Name: Answer Sheet Answer Sheet Mathematical Treasure-hunt:

3. ? ? Mathematical Treasure-hunt: Mathematical Treasure-hunt:
Previous Answer ?
To the next clue
Mathematical Treasure-hunt:
Previous Answer ?
To the next clue

4. Mathematical Treasure-hunt: Mathematical Treasure-hunt:
Previous Answer
To the next clue
Mathematical Treasure-hunt:
Previous Answer
To the next clue

5. A B Mathematical Treasure-hunt: Mathematical Treasure-hunt:
Previous Answer A
To the next clue
Mathematical Treasure-hunt:
Previous Answer B
To the next clue
X+20
4x+320
I’m thinking of a number which I then double and add 30. Half that answer is 325. What was the number I first thought of?
(x+30)º
2xº
In this parallelogram, two of the angles are shown. What is x?

6. C D Mathematical Treasure-hunt: Mathematical Treasure-hunt: 310-2x 50
Previous Answer C
To the next clue
Mathematical Treasure-hunt:
Previous Answer D
To the next clue 50
In this isosceles triangle, each base angle is (x+30)º. How many degrees is the third angle?
My friend and I have up to £600 between us to spend on a holiday. Travel will cost us £15 each. What’s the biggest number of pounds we can each spend on the rest of the holiday?

7. E F Mathematical Treasure-hunt: Mathematical Treasure-hunt: 110-2x
Previous Answer E
To the next clue
Mathematical Treasure-hunt:
Previous Answer F
To the next clue
110-2x
300-2x
Grandma invested some money 40 years ago and it’s now worth ten times as much. If she adds £200 to it, she can give each of her 6 grandchildren £500 each. How many pounds did she invest in the first place?
(150-x)º ?º

8. G H Mathematical Treasure-hunt: Mathematical Treasure-hunt: 40-x 280
Previous Answer G
To the next clue
Mathematical Treasure-hunt:
Previous Answer H
To the next clue
40-x
280
In the rectangle below, the shorter sides are each x metres and the longer sides each 160m longer than that. How many metres is the perimeter, in terms of x?
The perimeter of this regular pentagon is (5x+100) cm. How many cm is each edge?

9. I J Mathematical Treasure-hunt: Mathematical Treasure-hunt: 55 30+x
Previous Answer I
To the next clue
Mathematical Treasure-hunt:
Previous Answer J
To the next clue 55
30+x
(x+50)º ?º ?º
(2x+50)º
(75-x)º

10. K L Mathematical Treasure-hunt: Mathematical Treasure-hunt: 285 310
Previous Answer K
To the next clue
Mathematical Treasure-hunt:
Previous Answer L
To the next clue
310
285
(150-x)º
(2x+30)º
(X+50)º
(x+70)º ?º ?º