QUESTION IMAGE
Question
which two expressions are equivalent to (5 \times (5 \times 2))?
choose 2 answers:
a ((5 \times 5) \times (5 \times 2))
b ((5 \times 5) \times 2)
c (25 \times 2)
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"concepts_used": [
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</pre_analysis>
<reasoning>
Evaluate the original expression
We calculate the value of the given expression:
\[
5 \times (5 \times 2)
\]
Using Basic Multiplication:
\[
5 \times 2 = 10
\]
Then:
\[
5 \times 10 = 50
\]
Apply the associative property
Using the Associative Property of multiplication, we can regroup the factors:
\[
5 \times (5 \times 2) = (5 \times 5) \times 2
\]
This matches option (B).
Simplify the regrouped expression
We simplify the grouped terms:
\[
(5 \times 5) \times 2 = 25 \times 2
\]
This matches option (C).
Verify the remaining option
We evaluate option (A):
\[
(5 \times 5) \times (5 \times 2) = 25 \times 10 = 250
\]
Since \(250
eq 50\), option (A) is incorrect.
</reasoning>
<answer>
<mcq-option>(A) \((5 \times 5) \times (5 \times 2)\)</mcq-option>
<mcq-correct>(B) \((5 \times 5) \times 2\)</mcq-correct>
<mcq-correct>(C) \(25 \times 2\)</mcq-correct>
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Associative Property"
]
}
</post_analysis>
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"new_concepts": [
"Equivalent Expressions"
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</pre_analysis>
<reasoning>
Evaluate the original expression
We calculate the value of the given expression:
\[
5 \times (5 \times 2)
\]
Using Basic Multiplication:
\[
5 \times 2 = 10
\]
Then:
\[
5 \times 10 = 50
\]
Apply the associative property
Using the Associative Property of multiplication, we can regroup the factors:
\[
5 \times (5 \times 2) = (5 \times 5) \times 2
\]
This matches option (B).
Simplify the regrouped expression
We simplify the grouped terms:
\[
(5 \times 5) \times 2 = 25 \times 2
\]
This matches option (C).
Verify the remaining option
We evaluate option (A):
\[
(5 \times 5) \times (5 \times 2) = 25 \times 10 = 250
\]
Since \(250
eq 50\), option (A) is incorrect.
</reasoning>
<answer>
<mcq-option>(A) \((5 \times 5) \times (5 \times 2)\)</mcq-option>
<mcq-correct>(B) \((5 \times 5) \times 2\)</mcq-correct>
<mcq-correct>(C) \(25 \times 2\)</mcq-correct>
</answer>
<post_analysis>
{
"subject": "Mathematics",
"question_type": "Multiple Choice",
"knowledge_point": [
"Mathematics",
"Algebra",
"Associative Property"
]
}
</post_analysis>