## Όλα τα έργα

#### Right Triangle

Calculate the missing value.

# Pythagorean theorem

Learning

8

#### Finding out the hypotenuse

Calculate the exact value of the missing value.
Select the true statements.

# Pythagorean theorem

Training

8

#### Calculate abscissa with Pythagorean Theorem

Calculate the exact value of abscissa of point $\ {A}$.

# Pythagorean theorem

Learning

8

#### Lake modeling

In a lake, there are p fish. For each fish there are 20 fish eggs. Among the 20 fish eggs, just 7 hatch for each fish. Can you tell how many fish will be in the lake once the eggs hatch?

# Terms with variables

Modeling

7

#### Supportive task for "From natural to algebraic language"

How can we express with symbols an even and an odd number respectively?

# Natural numbers

Training

8

#### Challenging task for "from natural to algebraic language"

Translate the following sentence in algebraic language:
The quintuple of a number subtracted to its triple is equal to its double.

# Numbers & operations

Training

8