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Subtract. Write your answer in scientific notation. $\newline$ $(6.63 \times 10^6) - (2.6 \times 10^6)$ $\newline$ Choices: $\newline$ (A) $4.03 \times 10^8$ $\newline$ (B) $4.03 \times 10^4$ $\newline$ (C) $4.03 \times 10^6$ $\newline$ (D) $4.03 \times 10^2$

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Add and subtract numbers written in scientific notation

Full solution

Q. Subtract. Write your answer in scientific notation.

\newline

(6.63 \times 10^6) - (2.6 \times 10^6)

\newline

Choices:

\newline

(A)

4.03 \times 10^8

\newline

(B)

4.03 \times 10^4

\newline

(C)

4.03 \times 10^6

\newline

(D)

4.03 \times 10^2

Subtraction Problem: We have the following subtraction problem: $\newline$ $(6.63 \times 10^6) - (2.6 \times 10^6)$ $\newline$ Since the powers of $10$ are the same, we can directly subtract the coefficients. $\newline$ What is $6.63 - 2.6$ ? $\newline$ $6.63 - 2.6 = 4.03$
Subtract and Write Result: Write the answer in scientific notation. $\newline$ Since we subtracted the coefficients and the power of $10$ remains unchanged, we can write the result as: $\newline$ $4.03 \times 10^6$
Choose Equivalent Expression: Choose the equivalent expression for $(6.63 \times 10^6) - (2.6 \times 10^6)$ . The correct answer is $4.03 \times 10^6$ , which corresponds to choice (C).

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