Learning Objectives
- 1Understand subtraction as the inverse of addition
- 2Identify minuend, subtrahend, and difference in any subtraction statement
- 3Know the four properties: not commutative, not associative, a − 0 = a, a − a = 0
- 4Subtract using the number line (leftward movement)
- 5Recognize the three types of subtraction: take-away, comparison, missing-addend
- 6Apply borrowing (regrouping) for 2- and 3-digit subtraction
- 7Use mental strategies: counting up, decomposition, compensating, equal addition
Lessons in This Chapter
Chapter Progress
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