Mathematics · Pedagogy of Mathematics
A primary grade student solves a subtraction problem in the following way: 101 - 97 = 096 (by subtracting 7 from 1, and 9 from 0, resulting in 96). Which of the following inferences is most appropriate for the given situation?
- 1The child has incorrectly applied the rule of subtracting the smaller digit from the larger digit without understanding place value.✓
- 2The teacher should simply write the correct algorithm on the blackboard and ask the child to copy it.
- 3Solving similar questions repeatedly would definitely lead the child to the correct algorithm.
- 4The child has a conceptual understanding of subtraction but has made a careless error.
Correct answer
The child has incorrectly applied the rule of subtracting the smaller digit from the larger digit without understanding place value.
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