Simplify each problem and express the answer in scientific notation.

Worksheet titled "Operations with Scientific Notation" featuring 10 math problems involving addition, subtraction, multiplication, and division of numbers in scientific notation.

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1) (7 × 10⁴)(2 × 10⁵) = 14 × 10⁹ = 1.4 × 10¹⁰
2) (9 × 10³) + (5 × 10³) = 14 × 10³ = 1.4 × 10⁴
3) (3 × 10⁶) − (7 × 10⁶) = −4 × 10⁶
4) (5 × 10⁸) / (4 × 10⁵) = 1.25 × 10³
5) (2 × 10⁴) / (8 × 10⁷) = 0.25 × 10⁻³ = 2.5 × 10⁻⁴
6) (2 × 10⁶) − (4 × 10³) = 2 × 10⁶ − 0.004 × 10⁶ = 1.996 × 10⁶
7) (6 × 10⁵) + (1 × 10⁵) = 7 × 10⁵
8) (8 × 10⁶)(6 × 10⁷) = 48 × 10¹³ = 4.8 × 10¹⁴
9) (4 × 10⁵)(9 × 10⁵) = 36 × 10¹⁰ = 3.6 × 10¹¹
10) (3 × 10⁵) + (7 × 10³) = 3 × 10⁵ + 0.07 × 10⁵ = 3.07 × 10⁵

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