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Charlotte's Math Lab
Interactive 4th grade math — learn by playing with the numbers
Your Progress
3 of 8 units
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Printables
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📚 Units
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Unit 1: Place Value & Operations
Place Value to 1,000,000
Comparing & Ordering Numbers
Rounding
Multi-Digit Addition
Multi-Digit Subtraction
Multi-Step Word Problems
→ Open Unit 1
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Unit 2: Multi-Digit ×
Multiplication as Comparison
Multiplying by 10, 100, 1,000
2-Digit × 1-Digit Area Model
3-Digit & 4-Digit × 1-Digit
2-Digit × 2-Digit (Area Model)
Multi-Step Word Problems
→ Open Unit 2
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Unit 3: Multi-Digit ÷
Division as Sharing & Grouping
Division with Remainders
Long Division (1-Digit Divisor)
Interpreting Remainders
→ Open Unit 3
Coming Soon
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Unit 4: Factors & Patterns
Factor Pairs
Prime & Composite
Multiples
Number Patterns
Coming Soon
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Unit 5: Fraction Equivalence
Equivalent Fractions
Comparing Fractions
Benchmark Fractions
Coming Soon
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Unit 6: Fraction Operations
Add/Subtract Like Denominators
Mixed Numbers
Fraction × Whole Number
📖 Reference Tools
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Part-Part-Whole Model
Equal Parts Model
Comparison Model
5-Step Problem Solving
Practice Problems
→ Open Reference