Add thousand and hundred problem categories across operations#35
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Add thousand and hundred problem categories across operations#35
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New categories added: - Grade 3: Addition/Subtraction of Hundreds (stotice) - Grade 4: Addition/Subtraction up to 1000 (with/without carry/borrow), Comparison up to 1000 - Grade 5 (new): Multiplication/Division up to 100 (2-digit × 1-digit) Year groups reorganized so Grade 4 now includes 1000-range arithmetic alongside existing multiplication/division up to 20, and Grade 5 is introduced for larger multiplication and division problems. Carry/borrow detection generalized to work with step-based generation for 3-digit number categories. https://claude.ai/code/session_01CGiFofzMUvj7issSHSwndn
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Summary
This PR expands the math problem curriculum by adding new problem categories for thousands and hundreds across addition, subtraction, multiplication, division, and comparison operations. It also introduces a new grade level (5th grade) to the Slovenian curriculum grouping.
Key Changes
Addition: Added 4 new categories
Addition_ThousandWithoutCarry: 3-digit numbers (100-990) without carryingAddition_ThousandWithCarry: 3-digit numbers with forced carryingAddition_Thousand: 3-digit numbers with optional carryingAddition_Hundreds: 3-digit numbers in 100-step incrementsSubtraction: Added 4 new categories with analogous structure
Subtraction_ThousandWithoutBorrow: 3-digit numbers without borrowingSubtraction_ThousandWithBorrow: 3-digit numbers with forced borrowingSubtraction_Thousand: 3-digit numbers with optional borrowingSubtraction_Hundreds: 3-digit numbers in 100-step incrementsMultiplication & Division: Added hundred-level categories
Multiplication_HundredandMultiplication_Hundred_MissingDivision_HundredandDivision_Hundred_MissingComparison: Added
Comparison_Thousandcategory with 100-1000 range in 10-step incrementsCurriculum Organization:
Implementation Details
Math.floor(i / step) % 10instead of simple modulo operationshttps://claude.ai/code/session_01CGiFofzMUvj7issSHSwndn