you can use integer counters to model $-2 + 1$.

start with 2 negative counters.

then add 1 positive counter.

add.

$-2 + 1 = $

Question

you can use integer counters to model $-2 + 1$.

start with 2 negative counters.

then add 1 positive counter.

add.

$-2 + 1 = $

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "blank_filling_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Integer Addition Models", "Zero Pairs" ], "new_concepts": [], "current_concepts": [ "Integer Addition Models", "Zero Pairs" ] } ## Form zero pairs $$ (-1) + (+1) = 0 $$ ## Simplify the remaining counters $$ -2 + 1 = (-1) + (-1) + 1 = -1 + 0 = -1 $$ Add. $-2 + 1 =$ -1 { "subject": "Mathematics", "question_type": "Fill-in-the-blank", "knowledge_point": [ "Mathematics", "Algebra", "Integer Addition Models" ] }

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QUESTION IMAGE

Question

Explanation:

Form zero pairs

Simplify the remaining counters

Answer: