you can use integer counters to model $-7 - (-5)$.

start with 7 negative counters.

which of these shows how to model $-7 - (-5)$?

subtract:
$-7 - (-5) = $

Question

you can use integer counters to model $-7 - (-5)$.

start with 7 negative counters.

which of these shows how to model $-7 - (-5)$?

subtract:
$-7 - (-5) = $

Accepted Answer

{ "quality": "clear", "question_count": 2, "skills_matched": [ "step_cot", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Negative Integers", "Integer Subtraction Models" ], "new_concepts": [], "current_concepts": [ "Negative Integers", "Integer Subtraction Models" ] } ## Identify the correct counter model $$ \begin{aligned} &\text{Start: } 7 \text{ negative counters } (\ominus\ominus\ominus\ominus\ominus\ominus\ominus)\ &\text{Subtract } -5: \text{ Cross out exactly } 5 \text{ negative counters}\ &\text{Left model: } 1 \text{ remaining, } 6 \text{ crossed out (incorrect)}\ &\text{Right model: } 2 \text{ remaining, } 5 \text{ crossed out (correct)} \end{aligned} $$ ## Calculate the final difference $$ -7 - (-5) = -7 + 5 = -2 $$ ## Question 1 The correct model is the second (right) option, which shows 7 negative counters with 5 of them crossed out, leaving 2 negative counters. ## Question 2 $$-7 - (-5) = -2$$ { "subject": "Mathematics", "question_type": "Multi-part", "knowledge_point": [ "Mathematics", "Algebra", "Integer Subtraction Models" ] }

Sovi.AI - AI Math Tutor

QUESTION IMAGE

Question

Explanation:

Identify the correct counter model

Calculate the final difference

Answer:

Question 1

Question 2