Squared numbers
Square number = Any number squared is multiplied by itself (22 = 2 x 2)
Square numbers are…..square, see below (using pebbles).
See how each square grows. We extend each side and then fill out all the remainder.
Here are the first 10 numbers squared:
|
12 |
= |
1×1 |
= |
1 |
|
22 |
= |
2×2 |
= |
4 |
|
32 |
= |
3×3 |
= |
9 |
|
42 |
= |
4×4 |
= |
16 |
|
52 |
= |
5×5 |
= |
25 |
|
62 |
= |
6×6 |
= |
36 |
|
72 |
= |
7×7 |
= |
49 |
|
82 |
= |
8×8 |
= |
64 |
|
92 |
= |
9×9 |
= |
81 |
|
102 |
= |
10×10 |
= |
100 |
Example 1
52=5×5=25
Example 2
(-52)=-5×-5=25
(When we square a negative number we get a positive result)
Example 3
3 squared is 9 just as the square root of 9 is 3
Example 4
(34)2=34×34=3×34×4=916
