(9) \begin{array}{r} 543 \\ - 218 \\ \hline \end{array}
(13) \begin{array}{r} 503 \\ - 248 \\ \hline \end{array}
(10) \begin{array}{r} 543 \\ - 278 \\ \hline \end{array}
(14) \begin{array}{r} 503 \\ - 109 \\ \hline \end{array}
(11) \begin{array}{r} 543 \\ - 248 \\ \hline \end{array}
(15) \begin{array}{r} 508 \\ - 499 \\ \hline \end{array}
(12) $100 - 8 =$
(16) $100 - 77 =$

Question

Accepted Answer

{ "quality": "clear", "question_count": 8, "skills_matched": [ "step_cot", "table_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Three-Digit Subtraction", "Subtraction with Regrouping" ], "new_concepts": [], "current_concepts": [ "Three-Digit Subtraction", "Subtraction with Regrouping", "Column Subtraction" ] } ## Calculate column subtractions (9) to (11) $$ \begin{aligned} (9)\quad &543 - 218 = 325 \ (10)\quad &543 - 278 = 265 \ (11)\quad &543 - 248 = 295 \end{aligned} $$ ## Calculate column subtractions (13) to (15) $$ \begin{aligned} (13)\quad &503 - 248 = 255 \ (14)\quad &503 - 109 = 394 \ (15)\quad &508 - 499 = 9 \end{aligned} $$ ## Calculate horizontal subtractions (12) and (16) $$ \begin{aligned} (12)\quad &100 - 8 = 92 \ (16)\quad &100 - 77 = 23 \end{aligned} $$ | No. | Answer | |---|---| | (9) | $325$ | | (10) | $265$ | | (11) | $295$ | | (12) | $92$ | | (13) | $255$ | | (14) | $394$ | | (15) | $9$ | | (16) | $23$ | { "subject": "Mathematics", "question_type": "Free Response", "knowledge_point": [ "Mathematics", "Algebra", "Three-Digit Subtraction" ] }

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Question

Explanation:

Calculate column subtractions (9) to (11)

Calculate column subtractions (13) to (15)

Calculate horizontal subtractions (12) and (16)

Answer:

No.	Answer
(10)	\(265\)
(11)	\(295\)
(12)	\(92\)
(13)	\(255\)
(14)	\(394\)
(15)	\(9\)
(16)	\(23\)