1) The document contains 7 math activities with solutions. Activity 1 calculates the area of circular regions. Activity 2 calculates how long it will take 1000 balloons to fall from the ceiling. Activity 3 calculates the weight of a man based on the weight of his counterweight. Activity 4 solves a system of equations to determine how many plates of soup and brains are served. Activity 5 calculates how much money Indiana would earn from stealing 3 gemstones. Activity 6 finds the equation of a graph showing the number of children escaping over time. Activity 7 calculates the probability of Indiana being hurt by an arrow in 1 minute.

1. MATHS ACTIVITES

2. ACTIVITY 1The bans of the
Japanese
dancers are
opened in an
angle of 160
degrees. Their
ratio is 30 cm.
The wood part
has a ratio of
170 mm.
Calculate the
area of the
circular region
(the material
part).

3. SOLUTION 1
Solution: A= π · r² · a = 3,1416 · 30² · 160 =
360 360
1,256.64 cm²
A= π · r² · a = 3,1416 · 17² · 160 =
360 360
403.52 cm²
1,256.64 – 403.52 = 853.12 cm²

4. ACTIVITY 2
A thousand balloons fall down of the ceiling
and each one spends five seconds to reach
the floor. How much will the balloons
spend? (They are all thrown at the same
time)

5. SOLUTION 2
Solution: They will spend five seconds

6. ACTIVITY 3
A man is descended in a cage into the
magma. The counterweight weights ¼
more than the man. If it weights 112,5 kg,
How much does the man weight?

7. SOLUTION 3
Solution: ¼ x + x = 112,5
0,25x + x = 112,5
x = 112,5 : 1,25
x = 90

8. ACTIVITY 4
One of the most famous scenes of the film is the
dinner. Find out how many plates of Eyeball Soup
(x) and Chilled Monkey Brains (y) are served. To do
this you have to solve this system of equations:
x – 4 = -1
4x – 3y = 8

9. SOLUTION 4
x= 11
y= 12

10. ACTIVITY 5
Imagine that Indiana steals the three
gemstones. The value of the five
gemstones is 23,479$. How much will he
earn?

11. SOLUTION 5
Solution: 5 gemstones ------ 23,479$
3 gemstones ------ x
X = 23,479 · 3 = 14,087.4$

12. ACTIVITY 6
This graph shows the number
of children scaping per
second. Find the equation
for this graph.

13. SOLUTION 6
Solution: y= 5x/2

14. ACTIVITY 7
A number of 100 archers shoot an arrow per
second. An archer spends five seconds to
shoot an arrow. During the trajectory 3/5 of
the arrows fall into the river. Which is the
probability of hurting Indiana in a minute?

15. SOLUTION 7
Solution: 5s ----- 1 arrow
1min ----- 12 arrows
1min ------- 1200 arrows
If 3/5 fall into the river there are 2/5 left.
2/5 = 40/100 = 40%

16. MADE BY:
María Férez
Nerea Riveros