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Subtract. Write your answer in scientific notation. $\newline$ $(8.3 \times 10^8) - (4.6 \times 10^8)$ $\newline$ Choices: $\newline$ (A) $3.7 \times 10^8$ $\newline$ (B) $3.8 \times 10^8$ $\newline$ (C) $3.8 \times 10^7$ $\newline$ (D) $3.7 \times 10^7$

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Add and subtract numbers written in scientific notation

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Q. Subtract. Write your answer in scientific notation.

\newline

(8.3 \times 10^8) - (4.6 \times 10^8)

\newline

Choices:

\newline

(A)

3.7 \times 10^8

\newline

(B)

3.8 \times 10^8

\newline

(C)

3.8 \times 10^7

\newline

(D)

3.7 \times 10^7

Given Expression: We have: $\newline$ $(8.3 \times 10^8) - (4.6 \times 10^8)$ $\newline$ Since the powers of $10$ are the same, we can subtract the coefficients directly. $\newline$ What is $8.3 - 4.6$ ? $\newline$ $8.3 - 4.6 = 3.7$
Subtraction and Coefficients: Write the answer in scientific notation. $\newline$ Substitute $3.7$ for the coefficient and $8$ for the exponent in $a \times 10^b$ . $\newline$ Scientific notation: $3.7 \times 10^8$
Scientific Notation: Choose the equivalent expression for $(8.3 \times 10^8) - (4.6 \times 10^8)$ . $(8.3 \times 10^8) - (4.6 \times 10^8) = 3.7 \times 10^8$ $(8.3 \times 10^8) - (4.6 \times 10^8)$ is equivalent to $3.7 \times 10^8$ .

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