Answer:
- (2×10^8)(2×10^-2)
- 40×10^5
- 1.2×10^9/(3×10^2)
Step-by-step explanation:
Your calculator or a spreadsheet can help you do this. The rules of exponents apply.
(10^a)(10^b) = 10^(a+b)
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(2×10^8)(2×10^-2) = 4×10^6
40×10^5 = 4×10^6
40^6 = 4.096×10^9
400,000 = 4×10^5
1.2×10^9/3×10^2 = 4×10^10 or 1.2×10^9/(3×10^2) = 4×10^6 (see note)
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Note: A multiplier that is a power of 10 is one factor of a product. A product does not go into the denominator of a fraction unless it has parentheses around it. a/bc = (a/b)c ≠ a/(bc) (This is a consequence of the Order of Operations.)
