1. Find equivalents:

2. Complete the sentences:

1. Mathematics has a language of its own, which uses

2. The earliest recorded numbers were

3. To replace words such as «plus» and „equals“ mathematicians introduced

4. Such terms as «triangle» and „square“, for example, were applied to

5. Pictographs were used by

6. Numbers we use today are based on the

7. The sequence of even numbers that can be represented by such numbers as 2, 4, 6, 8, etc. is

8. An arithmetic sequence of numbers that increases the same amount each time is called

9. Geometric sequence often happens in nature when

10. A fraction is

11. The number at the bottom of the fraction tells us

12. The number at the top of the fraction tells us

3. Answer the questions:

1. What language does mathematics use?

2. What terms were applied to figures that are geometrically defined?

3. Did the Romans develop a system of numerals that used letters from their alphabet or special symbols?

4. What calculations can be written down in a simpler form?

5. What the difference between mathematical and arithmetic sequence?

6. Can sequences occur in nature? Give an example.

7. What do we call the part of the whole?

8. What number in a fraction tells us into how many parts the whole has been divided?

9. What number in a fraction tells us how many of the parts of the whole we have?