The document discusses cubic numbers, which are numbers multiplied by themselves three times. It provides examples such as 3 cubed equaling 27 and 4 cubed equaling 64. The cubic root of a number is the value that when cubed produces the original number. Perfect cubes are the results of cubing whole numbers, with examples including 8 from 2 cubed and 1331 from 11 cubed. Cubic numbers can also have roots that are not whole numbers, such as the cubic root of 40 being between 3.4 and 3.5.

1. CUBIC NUMBERS
 What is a cubic number?
A cubic number is a number multiplicated by itself three
times.
For example,we have:
3x3x3=27=3³
We write down "3 Cubed" as 33
(the little 3 means the number appears three times in the
multiplication)
More examples:
4 cubed=43=4 × 4 × 4=64
5 cubed=53=5 × 5 × 5=125
6 cubed=63=6 × 6 × 6=216

2. The Cube

3. THE CUBE ROOT
The cubic root of a number is a value that when cubed gives the
original number (the root of the cubic number ).
If we have 5x5x5=125, the cubic root is 125:5:5=5= 125.
The symbol for the cubic root is:

4. Perfect Cubes
The Perfect Cubes are the results of cubing the whole
numbers (1,2,3,4,5…..)
 Examples:
 23= 8
 33=9
 ………..
 113= 1331
 123= 1728
 ……….

5. Other Cubic Numbers
 We can have cubic numbers in which the root is not a whole
number .
As example- what it is the cubic root of 40:
3,5 x 3,5 x 3,5 = 42,875
3,4 x 3,4 x 3,4 = 39,304
That means that the cubic root of 40 is between 3,4 and 3,5

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AUTHORS:-Paveliu Andrei
- Parlea Teodor
- Cataraga Daniel
- Zaharia Yani