Answer:
Explanation:
1) 6*10³
2) 4*10²
3) 8*10⁴
4)9000 = 9*10³
5) 400,000 = 4 *10⁵
6)4000 = 4*10³
7) 450 = 4.5 * 10²
8) 55 000 = 5.5*10⁴
9) 350 = 3.5*10²
10) 750 000 = 7.5*10⁵
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