6.78 × 102 written in regular notation is 678
678 = (6 x 100) + (7 x 10) + (8 x 1)
113 x 6 = 660 + 18 = 678 113 x 10 = 1,130 1,130 + 678 = 1,808
3 x 10 to the 5th power + 3 x 10 to the 4th power + 2 x 10 to the 2nd power
120.3
It is not, it is smaller.
8.2 x 102 ÷ 6.3 x 104 ≈ 1.302 x 10-2
10 to the 2nd power would be 100. 10 x 10 = 100.
2 x 102 or 200
4.5 x 102 = 450
9.2 x 102 = 920
678 x 49 = 33222
5 x 678 = 3390