b198b
(9) $30 + \box = 100$
(10) $60 + \box = 100$
(11) $95 + \box = 100$
(12) $130 + \box = 150$
(13) $150 + \box = 200$
(14) $200 + \box = 300$
(15) $250 + \box = 400$
(16) $400 + \box = 1000$

b199a kumon
subtraction of 3-digit numbers 4
1. subtract.
(1) $\begin{array}{r} 800 \\ - 243 \\ \hline \end{array}$
(2) $\begin{array}{r} 800 \\ - 335 \\ \hline \end{array}$
(3) $\begin{array}{r} 800 \\ - 404 \\ \hline \end{array}$
(4) $\begin{array}{r} 800 \\ - 709 \\ \hline \end{array}$
(5) $\begin{array}{r} 901 \\ - 443 \\ \hline \end{array}$
(6) $\begin{array}{r} 901 \\ - 505 \\ \hline \end{array}$
(7) $\begin{array}{r} 911 \\ - 406 \\ \hline \end{array}$
(8) $\begin{array}{r} 911 \\ - 559 \\ \hline \end{array}$

Question

b198b
(9) $30 + \box = 100$
(10) $60 + \box = 100$
(11) $95 + \box = 100$
(12) $130 + \box = 150$
(13) $150 + \box = 200$
(14) $200 + \box = 300$
(15) $250 + \box = 400$
(16) $400 + \box = 1000$

b199a kumon
subtraction of 3-digit numbers 4
1. subtract.
(1) $\begin{array}{r} 800 \\ - 243 \\ \hline \end{array}$
(2) $\begin{array}{r} 800 \\ - 335 \\ \hline \end{array}$
(3) $\begin{array}{r} 800 \\ - 404 \\ \hline \end{array}$
(4) $\begin{array}{r} 800 \\ - 709 \\ \hline \end{array}$
(5) $\begin{array}{r} 901 \\ - 443 \\ \hline \end{array}$
(6) $\begin{array}{r} 901 \\ - 505 \\ \hline \end{array}$
(7) $\begin{array}{r} 911 \\ - 406 \\ \hline \end{array}$
(8) $\begin{array}{r} 911 \\ - 559 \\ \hline \end{array}$

Accepted Answer

{ "quality": "clear", "question_count": 16, "skills_matched": [ "step_cot", "table_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Missing Number Problems", "Three-Digit Subtraction" ], "new_concepts": [], "current_concepts": [ "Missing Number Problems", "Three-Digit Subtraction" ] } ## Solve missing number equations on page B198b $$ \begin{aligned} (9)\quad &100 - 30 = 70 \ (10)\quad &100 - 60 = 40 \ (11)\quad &100 - 95 = 5 \ (12)\quad &150 - 130 = 20 \ (13)\quad &200 - 150 = 50 \ (14)\quad &300 - 200 = 100 \ (15)\quad &400 - 250 = 150 \ (16)\quad &1000 - 400 = 600 \end{aligned} $$ ## Solve column subtraction problems on page B199a $$ \begin{aligned} (1)\quad &800 - 243 = 557 \ (2)\quad &800 - 335 = 465 \ (3)\quad &800 - 404 = 396 \ (4)\quad &800 - 709 = 91 \ (5)\quad &901 - 443 = 458 \ (6)\quad &901 - 505 = 396 \ (7)\quad &911 - 406 = 505 \ (8)\quad &911 - 559 = 352 \end{aligned} $$ ## Page B198b | No. | Problem | Answer | |---|---|---| | (9) | $30 + \square = 100$ | $70$ | | (10) | $60 + \square = 100$ | $40$ | | (11) | $95 + \square = 100$ | $5$ | | (12) | $130 + \square = 150$ | $20$ | | (13) | $150 + \square = 200$ | $50$ | | (14) | $200 + \square = 300$ | $100$ | | (15) | $250 + \square = 400$ | $150$ | | (16) | $400 + \square = 1000$ | $600$ | ## Page B199a | No. | Problem | Answer | |---|---|---| | (1) | $800 - 243$ | $557$ | | (2) | $800 - 335$ | $465$ | | (3) | $800 - 404$ | $396$ | | (4) | $800 - 709$ | $91$ | | (5) | $901 - 443$ | $458$ | | (6) | $901 - 505$ | $396$ | | (7) | $911 - 406$ | $505$ | | (8) | $911 - 559$ | $352$ | { "subject": "Mathematics", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Mathematics", "Algebra", "Missing Number Problems" ] }

No.	Problem	Answer
(10)	\(60 + \square = 100\)	\(40\)
(11)	\(95 + \square = 100\)	\(5\)
(12)	\(130 + \square = 150\)	\(20\)
(13)	\(150 + \square = 200\)	\(50\)
(14)	\(200 + \square = 300\)	\(100\)
(15)	\(250 + \square = 400\)	\(150\)
(16)	\(400 + \square = 1000\)	\(600\)

No.	Problem	Answer
(2)	\(800 - 335\)	\(465\)
(3)	\(800 - 404\)	\(396\)
(4)	\(800 - 709\)	\(91\)
(5)	\(901 - 443\)	\(458\)
(6)	\(901 - 505\)	\(396\)
(7)	\(911 - 406\)	\(505\)
(8)	\(911 - 559\)	\(352\)

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QUESTION IMAGE

Question

Explanation:

Solve missing number equations on page B198b

Solve column subtraction problems on page B199a

Answer:

Page B198b

Page B199a