Question

subtract.
(1) \

$$\begin{array}{r} 33 \\\\ -\\phantom{0}3 \\\\ \\hline \\end{array}$$

(5) \

$$\begin{array}{r} 36 \\\\ -19 \\\\ \\hline \\end{array}$$

(2) \

$$\begin{array}{r} 33 \\\\ -\\phantom{0}8 \\\\ \\hline \\end{array}$$

(6) \

$$\begin{array}{r} 36 \\\\ -17 \\\\ \\hline \\end{array}$$

(3) \

$$\begin{array}{r} 33 \\\\ -18 \\\\ \\hline \\end{array}$$

(7) \

$$\begin{array}{r} 36 \\\\ -25 \\\\ \\hline \\end{array}$$

(4) \

$$\begin{array}{r} 33 \\\\ -19 \\\\ \\hline \\end{array}$$

(8) \

$$\begin{array}{r} 36 \\\\ -28 \\\\ \\hline \\end{array}$$

Explanation:

<pre_analysis>
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"quality": "clear",
"question_count": 8,
"skills_matched": [
"step_cot",
"table_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Column Subtraction",
"Subtraction with Regrouping"
],
"new_concepts": [],
"current_concepts": [
"Column Subtraction",
"Subtraction with Regrouping"
]
}
</pre_analysis>

<reasoning>

Calculate column subtractions for questions 1 to 4

\[

$$\begin{aligned} &\text{(1) } 33 - 3 = 30 \\ &\text{(2) } 33 - 8 = 25 \\ &\text{(3) } 33 - 18 = 15 \\ &\text{(4) } 33 - 19 = 14 \end{aligned}$$

\]

Calculate column subtractions for questions 5 to 8

\[

$$\begin{aligned} &\text{(5) } 36 - 19 = 17 \\ &\text{(6) } 36 - 17 = 19 \\ &\text{(7) } 36 - 25 = 11 \\ &\text{(8) } 36 - 28 = 8 \end{aligned}$$

\]
</reasoning>

<answer>

No.	Problem	Answer
(2)	\(33 - 8\)	\(25\)
(3)	\(33 - 18\)	\(15\)
(4)	\(33 - 19\)	\(14\)
(5)	\(36 - 19\)	\(17\)
(6)	\(36 - 17\)	\(19\)
(7)	\(36 - 25\)	\(11\)
(8)	\(36 - 28\)	\(8\)

</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Free Response",
"knowledge_point": [
"Mathematics",
"Algebra",
"Column Subtraction"
]
}
</post_analysis>

Answer:

<pre_analysis>
{
"quality": "clear",
"question_count": 8,
"skills_matched": [
"step_cot",
"table_formatter",
"explain_then_answer",
"quick"
],
"needs_drawing": false,
"concepts_used": [
"Column Subtraction",
"Subtraction with Regrouping"
],
"new_concepts": [],
"current_concepts": [
"Column Subtraction",
"Subtraction with Regrouping"
]
}
</pre_analysis>

<reasoning>

Calculate column subtractions for questions 1 to 4

\[

$$\begin{aligned} &\text{(1) } 33 - 3 = 30 \\ &\text{(2) } 33 - 8 = 25 \\ &\text{(3) } 33 - 18 = 15 \\ &\text{(4) } 33 - 19 = 14 \end{aligned}$$

\]

Calculate column subtractions for questions 5 to 8

\[

$$\begin{aligned} &\text{(5) } 36 - 19 = 17 \\ &\text{(6) } 36 - 17 = 19 \\ &\text{(7) } 36 - 25 = 11 \\ &\text{(8) } 36 - 28 = 8 \end{aligned}$$

\]
</reasoning>

<answer>

No.	Problem	Answer
(2)	\(33 - 8\)	\(25\)
(3)	\(33 - 18\)	\(15\)
(4)	\(33 - 19\)	\(14\)
(5)	\(36 - 19\)	\(17\)
(6)	\(36 - 17\)	\(19\)
(7)	\(36 - 25\)	\(11\)
(8)	\(36 - 28\)	\(8\)

</answer>

<post_analysis>
{
"subject": "Mathematics",
"question_type": "Free Response",
"knowledge_point": [
"Mathematics",
"Algebra",
"Column Subtraction"
]
}
</post_analysis>