Expanded Addition & Subtraction with Increased Complexity
Objective
Reinforce foundational skills and introduce 2-digit numbers to improve mental calculation abilities.
Topics Covered
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Advanced addition and subtraction techniques with more complex row combinations
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Continued use of formulas for mental calculation practice
Exercises
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2-digit numbers in 3-row setups
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1-digit and 2-digit numbers in 4-row and 5-row configurations
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Building fluency with mixed exercises and improved comprehension of addition and subtraction