Answer:
7 x10²
Explanation:
1. (4.3 x 103)+(2.5 x 103)
- you multiply the 4.3 and the 103, then you multilpy the 2.5 and 103
2. =442.9 + 257.5
- you add the 442.9 and the 257.5
3. =700.4
-you move the decimal to left so that the number is less than ten but more than 0
-the number of spaces you moved the decimal which in this case was two is the exponent
4. =7 x 10²