0.252 = 0.0625 = 6/100 + 2/1000 + 5/10000
62 is 36
0.0441
72 = 49 = 4.9*101
Seven squared is written 72
All you do is 28*28
8.2 times 10 to the 2nd power
531
3/4= to 2nd power
52 = 25
6.78 × 102 written in regular notation is 678
3 x 10 to the 5th power + 3 x 10 to the 4th power + 2 x 10 to the 2nd power
5.36 to the 2nd power Edit: 5.36 x 102. 5.36 to the second power (ie squared) is 28.7296