## All Tasks

#### Addition

Solve this addition between fractions:
$\dfrac{27}{27}+\dfrac{3}{4}+\dfrac{5}{2}+\dfrac{13}{15}+\dfrac{1}{20}$

# Fractions

Training

6

#### Addition (with the same denominator)

Try to solve this addition of fractions with the same denominator, using a simplification if necessary:
$\dfrac{37}{44} + \dfrac{95}{44}$

# Fractions

Training

6

#### Median six numbers

Let 3,6,4,5,7,9 be six numbers from a list of nine integers. What is the largest possible value for the median of the nine numbers?

# Mean & median

Reasoning

7

#### Find x in the exponential equation

Find the value for $x$ using the properties of powers:
$2^{x+3}=2^{6}⋅3^{x-3}$

# Powers of integer exponent

Training

13

#### National Holiday

Within the framework of the celebration of the German unity day, the 3rd of October, the students of Pieter's class are going to organize a set of activities to be done at their school, with the objective of sensibilizing families about the importance of this holiday.
Pieter's class has 23 students, which 14 are girls.
The teacher is going to randomly choose a student to receive the families. What is the probability of the student chosen being a boy?

# One-stage random experiments

Reasoning

8

#### Interquartile range

Consider this sample:
$${45,47,49,50,52,55,57,60,63,65}$$
Now, find the interquartile range.

# Mean & median

Training

6