QUESTION IMAGE
Question
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work out \\((3 \times 10^4) \times (2 \times 10^9)\\)
give your answer in standard form.
<pre_analysis>
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</pre_analysis>
<reasoning>
Group the numerical coefficients and powers of 10
\[
(3 \times 10^4) \times (2 \times 10^9) = (3 \times 2) \times (10^4 \times 10^9)
\]
Multiply the coefficients and apply the laws of indices
\[
3 \times 2 = 6
\]
\[
10^4 \times 10^9 = 10^{4+9} = 10^{13}
\]
Combine into standard form
\[
6 \times 10^{13}
\]
</reasoning>
<answer>
\(6 \times 10^{13}\)
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Free Response",
"knowledge_point": [
"Mathematics",
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"Scientific Notation"
]
}
</post_analysis>
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<pre_analysis>
{
"quality": "clear",
"question_count": 1,
"skills_matched": [
"step_cot",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Scientific Notation",
"Standard Form"
],
"new_concepts": [],
"current_concepts": [
"Scientific Notation",
"Standard Form",
"Laws of Indices"
]
}
</pre_analysis>
<reasoning>
Group the numerical coefficients and powers of 10
\[
(3 \times 10^4) \times (2 \times 10^9) = (3 \times 2) \times (10^4 \times 10^9)
\]
Multiply the coefficients and apply the laws of indices
\[
3 \times 2 = 6
\]
\[
10^4 \times 10^9 = 10^{4+9} = 10^{13}
\]
Combine into standard form
\[
6 \times 10^{13}
\]
</reasoning>
<answer>
\(6 \times 10^{13}\)
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Free Response",
"knowledge_point": [
"Mathematics",
"Algebra",
"Scientific Notation"
]
}
</post_analysis>